SCF5250 User’s Manual
Document Number: SCF5250UM
Rev. 4
03/2005
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Document Number: SCF5250UM
Rev. 4
03/2005
SCF5250 User’s Manual, Rev. 4
Freescale Semiconductor TOC-1
TABLE OF CONTENTS
SECTION 1
SCF5250 INTRODUCTION
1.1 SCF5250 Overview ........................................................................................................ 1-1
1.2 SCF5250 Feature Introduction ....................................................................................... 1-1
1.3 SCF5250 Block Diagram ................................................................................................ 1-2
1.4 SCF5250 Feature Details ............................................................................................... 1-3
1.5 SCF5250 Functional Overview ...................................................................................... 1-5
1.5.1 ColdFire V2 Core ...................................................................................................... 1-5
1.5.2 DMA Controller ......................................................................................................... 1-5
1.5.3 Enhanced Multiply and Accumulate Module (EMAC) ............................................... 1-5
1.5.4 Instruction Cache ...................................................................................................... 1-6
1.5.5 Internal 128-KB SRAM .............................................................................................. 1-6
1.5.6 DRAM Controller ....................................................................................................... 1-6
1.5.7 System Interface ....................................................................................................... 1-6
1.5.8 External Bus Interface ............................................................................................... 1-6
1.5.9 Serial Audio Interfaces .............................................................................................. 1-6
1.5.10 IEC958 Digital Audio Interfaces ................................................................................ 1-6
1.5.11 Audio Bus .................................................................................................................. 1-7
1.5.12 CD-ROM Encoder/Decoder ...................................................................................... 1-7
1.5.13 Dual UART Module ................................................................................................... 1-7
1.5.14 Queued Serial Peripheral Interface QSPI ................................................................. 1-7
1.5.15 Timer Module ............................................................................................................ 1-8
1.5.16 IDE Interface ............................................................................................................. 1-8
1.5.17 Analog/Digital Converter (ADC) ................................................................................ 1-8
1.5.18 Flash Memory Card Interface ................................................................................... 1-8
1.5.19 I
2
C Module ................................................................................................................ 1-8
1.5.20 Chip-Selects .............................................................................................................. 1-8
1.5.21 GPIO Interface .......................................................................................................... 1-8
1.5.22 Interrupt Controller .................................................................................................... 1-9
1.5.23 JTAG ......................................................................................................................... 1-9
1.5.24 System Debug Interface ........................................................................................... 1-9
1.5.25 On-chip Crystal oscillator and On-chip PLL .............................................................. 1-9
1.5.26 Sleep mode / WAKE-UP ........................................................................................... 1-9
1.5.27 Bootloader ................................................................................................................. 1-9
1.5.28 Internal Voltage Regulator ......................................................................................... 1-9
SECTION 2
SIGNAL DESCRIPTION 1
2.1 Introduction .................................................................................................................... 2-1
2.2 GPIO .............................................................................................................................. 2-5
2.3 SCF5250 Bus Signals .................................................................................................... 2-5
2.3.1 Address Bus .............................................................................................................. 2-5
2.3.2 Read-Write Control ................................................................................................... 2-5
2.3.3 Output Enable ........................................................................................................... 2-5
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2.3.4 Data Bus ................................................................................................................... 2-5
2.3.5 Transfer Acknowledge .............................................................................................. 2-5
2.4 SDRAM Controller Signals ............................................................................................. 2-5
2.5 CHIP Selects .................................................................................................................. 2-6
2.6 ISA Bus .......................................................................................................................... 2-6
2.7 Bus Buffer Signals ..........................................................................................................2-6
2.8 I
2
C Module Signals ........................................................................................................ 2-7
2.9 Serial Module Signals .................................................................................................... 2-7
2.10 Timer Module Signals .................................................................................................... 2-8
2.11 Serial Audio Interface Signals ........................................................................................ 2-8
2.12 Digital Audio Interface Signals ....................................................................................... 2-9
2.13 Subcode Interface ..........................................................................................................2-9
2.14 Analog to Digital Converter (ADC) ................................................................................. 2-9
2.15 Secure Digital/ MemoryStick card Interface ................................................................. 2-10
2.16 Queued Serial Peripheral Interface (QSPI) .................................................................. 2-10
2.17 Crystal Trim .................................................................................................................. 2-11
2.18 Clock Out ..................................................................................................................... 2-11
2.19 Debug and Test Signals ............................................................................................... 2-11
2.19.1 Test Mode ............................................................................................................... 2-11
2.19.2 High Impedance ...................................................................................................... 2-11
2.19.3 Processor Clock Output .......................................................................................... 2-11
2.19.4 Debug Data ............................................................................................................. 2-11
2.19.5 Processor Status ..................................................................................................... 2-11
2.20 BDM/JTAG Signals ...................................................................................................... 2-12
2.21 Clock and Reset signals ............................................................................................... 2-12
2.21.1 Reset In ................................................................................................................... 2-13
2.21.2 System Bus input .................................................................................................... 2-13
2.22 Wake-Up Signal ........................................................................................................... 2-13
2.23 On-chip Linear Regulator ............................................................................................. 2-13
SECTION 3
COLDFIRE® CORE
3.1 Processor Pipelines ....................................................................................................... 3-1
3.2 Processor Register Description ...................................................................................... 3-2
3.2.1 User Programming Model ......................................................................................... 3-2
3.2.1.1 Data Registers (D0–D7) ...................................................................................... 3-2
3.2.1.2 Address Registers (A0–A6) ................................................................................. 3-2
3.2.1.3 Stack Pointer (A7,SP) .......................................................................................... 3-2
3.2.1.4 Program Counter (PC) ......................................................................................... 3-3
3.2.1.5 Condition Code Register (CCR) .......................................................................... 3-3
3.2.2 Enhanced Multiply Accumulate Module (EMAC) User Programming Model ............ 3-4
3.2.2.1 EMAC Instruction Set Summary .......................................................................... 3-4
3.2.3 Supervisor Programming Model ............................................................................... 3-5
3.2.3.1 Status Register (SR) ............................................................................................ 3-6
3.2.3.2 Vector Base Register (VBR) ................................................................................ 3-6
3.3 Exception Processing Overview ..................................................................................... 3-7
3.4 Exception Stack Frame Definition .................................................................................. 3-8
3.5 Processor Exceptions .................................................................................................... 3-9
3.5.1 Access Error Exception ............................................................................................. 3-9
3.5.2 Address Error Exception ......................................................................................... 3-10
3.5.3 Illegal Instruction Exception .................................................................................... 3-10
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3.5.4 Divide By Zero ........................................................................................................ 3-10
3.5.5 Privilege Violation ................................................................................................... 3-10
3.5.6 Trace Exception ...................................................................................................... 3-10
3.5.7 Debug Interrupt ....................................................................................................... 3-11
3.5.8 RTE and Format Error Exceptions .......................................................................... 3-11
3.5.9 TRAP Instruction Exceptions .................................................................................. 3-11
3.5.10 Interrupt Exception .................................................................................................. 3-11
3.5.11 Fault-on-Fault Halt .................................................................................................. 3-11
3.5.12 Reset Exception ...................................................................................................... 3-12
3.6 Instruction Execution Timing ........................................................................................ 3-12
3.6.1 Timing Assumptions ................................................................................................ 3-12
3.6.2 MOVE Instruction Execution Times ........................................................................ 3-13
3.7 Standard One Operand Instruction Execution Times ................................................... 3-14
3.8 Standard Two Operand Instruction Execution Times ................................................... 3-15
3.9 Miscellaneous Instruction Execution Times ................................................................. 3-16
3.10 Branch Instruction Execution Times ............................................................................. 3-18
SECTION 4
PHASE-LOCKED LOOP AND CLOCK DIVIDERS
4.1 PLL Features .................................................................................................................. 4-1
4.2 PLL Programming .......................................................................................................... 4-2
4.2.1 PLL Operation ........................................................................................................... 4-4
4.2.2 PLL Lock-in Time ...................................................................................................... 4-4
4.2.3 PLL Electrical Limits .................................................................................................. 4-4
4.3 Audio Clock Generation ................................................................................................. 4-4
4.4 Reduced Power Mode .................................................................................................... 4-5
4.5 Sleep / wake-up mode ................................................................................................... 4-6
4.6 Selecting Audio_Clock Input .......................................................................................... 4-6
4.7 Recommended Settings ................................................................................................. 4-6
SECTION 5
INSTRUCTION CACHE
5.1 Instruction Cache Features ............................................................................................ 5-1
5.2 Instruction Cache Physical Organization ....................................................................... 5-1
5.3 Instruction Cache Operation .......................................................................................... 5-2
5.3.1 Interaction with Other Modules ................................................................................. 5-2
5.3.2 Memory Reference Attributes ................................................................................... 5-3
5.3.3 Cache Coherency and Invalidation ........................................................................... 5-3
5.3.4 Reset ......................................................................................................................... 5-3
5.3.5 Cache Miss Fetch Algorithm/Line Fills ...................................................................... 5-3
5.4 Instruction Cache Programming Model .......................................................................... 5-5
5.4.1 Instruction Cache Registers Memory Map ................................................................ 5-5
5.4.2 Instruction Cache Register ........................................................................................ 5-5
5.4.2.1 Cache Control Register ....................................................................................... 5-5
5.4.2.2 Access Control Registers .................................................................................... 5-7
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TOC-4 Freescale Semiconductor
SECTION 6
STATIC RAM (SRAM)
6.1 SRAM Features .............................................................................................................. 6-1
6.2 SRAM Operation ............................................................................................................ 6-1
6.1 SRAM Programming Model ........................................................................................... 6-1
6.3.1 SRAM Base Address Register .................................................................................. 6-1
6.3.2 SRAM Initialization .................................................................................................... 6-4
6.3.3 SRAM Initialization Code .......................................................................................... 6-4
6.3.4 Power Management .................................................................................................. 6-4
SECTION 7
SYNCHRONOUS DRAM CONTROLLER MODULE
7.1 SDRAM Features ........................................................................................................... 7-1
7.1.1 Definitions ................................................................................................................. 7-1
7.1.2 Block Diagram and Major Components .................................................................... 7-1
7.2 DRAM Controller Operation ........................................................................................... 7-3
7.2.1 DRAM Controller Registers ....................................................................................... 7-3
7.3 Synchronous Operation ................................................................................................. 7-3
7.3.1 DRAM Controller Signals in Synchronous Mode ...................................................... 7-4
7.3.2 Synchronous Register Set ........................................................................................ 7-5
4.3.2.1 DRAM Control Register (DCR) (Synchronous Mode) .......................................... 7-5
7.3.2.2 DRAM Address and Control (DACR0) (Synchronous Mode) .............................. 7-6
7.3.2.3 DRAM Controller Mask Registers (DMR0) .......................................................... 7-8
7.3.3 General Synchronous Operation Guidelines ............................................................ 7-9
7.3.3.1 Address Multiplexing ............................................................................................ 7-9
7.3.3.2 Interfacing Example ........................................................................................... 7-11
7.3.3.3 Burst Page Mode ............................................................................................... 7-11
7.3.3.4 Continuous Page Mode ..................................................................................... 7-13
7.3.3.5 Auto-Refresh Operation ..................................................................................... 7-15
7.3.3.6 Self-Refresh Operation ...................................................................................... 7-16
7.3.4 Initialization Sequence ............................................................................................ 7-17
7.3.4.1 Mode Register Settings ..................................................................................... 7-17
7.4 SDRAM Example ......................................................................................................... 7-19
7.4.1 SDRAM Interface Configuration .............................................................................. 7-19
7.4.2 DCR Initialization .................................................................................................... 7-19
7.4.3 DACR Initialization .................................................................................................. 7-20
7.4.4 DMR Initialization .................................................................................................... 7-21
7.4.5 Mode Register Initialization ..................................................................................... 7-22
7.4.6 Initialization Code .................................................................................................... 7-24
SECTION 8
BUS OPERATION
8.1 Bus Features .................................................................................................................. 8-1
8.2 Bus and Control Signals ................................................................................................. 8-1
8.2.1 Address Bus .............................................................................................................. 8-1
8.2.2 Read/Write control .................................................................................................... 8-2
8.2.3 Transfer Acknowledge (TA) ...................................................................................... 8-2
8.2.4 Data Bus ................................................................................................................... 8-2
8.2.5 Chip Selects ..............................................................................................................8-2
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8.2.6 Output Enable ........................................................................................................... 8-3
8.3 Clock and Reset Signals ................................................................................................ 8-3
8.3.1 Reset In ..................................................................................................................... 8-3
8.3.2 System Bus Clock Output ......................................................................................... 8-3
8.4 Bus Characteristics ........................................................................................................ 8-3
8.5 Data Transfer Operation ................................................................................................ 8-4
8.5.1 Bus Cycle Execution ................................................................................................. 8-5
8.5.2 Read Cycle ............................................................................................................... 8-6
8.5.3 Write Cycle ................................................................................................................ 8-8
8.5.4 Back-to-Back Bus Cycles ........................................................................................ 8-10
8.5.5 Burst Cycles ............................................................................................................ 8-10
8.5.5.1 Line Transfers .................................................................................................... 8-11
8.5.5.2 Line Read Bus Cycles ....................................................................................... 8-11
8.6 Misaligned Operands ................................................................................................... 8-14
8.7 Reset Operation ........................................................................................................... 8-15
8.7.1 Software Watchdog Reset ...................................................................................... 8-16
SECTION 9
SYSTEM INTEGRATION MODULE
9.1 SIM Introduction ............................................................................................................. 9-1
9.1.1 SIM Features ............................................................................................................ 9-1
9.2 Programming Model ....................................................................................................... 9-1
9.2.1 SIM Register Memory Map ....................................................................................... 9-1
9.3 SIM Programming and Configuration ............................................................................. 9-3
9.3.1 Module Base Address Registers ............................................................................... 9-3
9.3.2 Device ID .................................................................................................................. 9-5
9.3.3 Interrupt Controller .................................................................................................... 9-6
9.4 Interrupt Interface ........................................................................................................... 9-7
9.4.1 Primary controller Interrupt Registers ....................................................................... 9-7
9.4.1.1 Interrupt Mask Register ....................................................................................... 9-9
9.4.1.2 Interrupt Pending Register ................................................................................... 9-9
9.4.2 Secondary Interrupt Controller Registers ................................................................ 9-10
9.4.2.1 Interrupt Level Selection .................................................................................... 9-11
9.4.2.2 Interrupt Vector Generation ............................................................................... 9-11
9.4.2.3 Spurious Vector Register ................................................................................... 9-12
9.4.2.4 Secondary Interrupt Sources ............................................................................. 9-12
9.4.3 Software interrupts .................................................................................................. 9-14
9.4.4 Interrupt Monitor ...................................................................................................... 9-14
9.5 System Protection And Reset Status ........................................................................... 9-15
9.5.1 Reset Status Register ............................................................................................. 9-15
9.5.2 Software Watchdog Timer ...................................................................................... 9-16
9.5.2.1 System Protection Control Register ................................................................... 9-18
9.5.2.2 Software Watchdog Interrupt Vector Register ................................................... 9-19
9.5.2.3 Software Watchdog Service Register ................................................................ 9-19
9.6 CPU HALT Instruction .................................................................................................. 9-20
9.7 SCF5250 Bus Arbitration Control ................................................................................. 9-20
9.7.1 Default Bus Master Park Register ........................................................................... 9-20
9.7.1.1 Internal Arbitration Operation ............................................................................. 9-20
9.7.1.2 PARK Register Bit Configuration ....................................................................... 9-21
9.8 General Purpose I/Os .................................................................................................. 9-22
9.8.1 General Purpose Inputs .......................................................................................... 9-23
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TOC-6 Freescale Semiconductor
9.8.1.1 General Purpose Input Interrupts ...................................................................... 9-24
9.8.2 General Purpose Outputs ....................................................................................... 9-25
9.9 Multiplexed PIn Configuration ...................................................................................... 9-27
SECTIO 10
CHIP-SELECT MODULE
10.1 Introduction .................................................................................................................. 10-1
10.1.1 Chip Select Features .............................................................................................. 10-1
10.2 Chip-Select Signals ...................................................................................................... 10-1
10.2.1 Chip Selects ............................................................................................................ 10-1
10.2.1.1 CS0/CS4 ............................................................................................................ 10-1
10.2.1.2 CS1/QSPI_CS3/GPIO28 ................................................................................... 10-1
10.2.1.3 CS2 - IDE-DIOR/GPIO31 and IDE-DIOW/GPIO32 ........................................... 10-2
10.2.1.4 CS3 ....................................................................................................................10-2
10.2.1.5 Output Enable OE .............................................................................................. 10-2
10.2.2 Buffer Enable Signals - BUFENB1 and BUFENB2 ................................................. 10-2
10.2.3. IDE-IORDY - Bus Termination Signal ..................................................................... 10-2
10.3 Chip-Select Operation .................................................................................................. 10-2
10.3.1 Chip-Select Module ................................................................................................. 10-2
10.3.1.1 General Chip Select Operation .......................................................................... 10-3
10.3.1.1.1 Port Sizing .................................................................................................... 10-3
10.3.1 Global Chip-Select Operation ................................................................................. 10-3
10.4 Programming Model ..................................................................................................... 10-4
10.4.1 Chip-Select Registers Memory Map ....................................................................... 10-4
10.4.2 Chip Select Module Registers ................................................................................. 10-5
10.4.2.1 Chip Select Address Register ............................................................................ 10-5
10.4.2.2 Chip Select Mask Register ................................................................................ 10-5
10.4.2.3 Chip Select Control Register ............................................................................. 10-7
10.4.2.4 Code example .................................................................................................... 10-8
SECTION 11
TIMER MODULE
11.1 Timer Module Overview ............................................................................................... 11-1
11.2 Timer Features .............................................................................................................11-1
11.3 Timer Signals ............................................................................................................... 11-1
11.3.1 Timer Output ........................................................................................................... 11-1
11.4 General-Purpose Timer Units ...................................................................................... 11-2
11.4.1 Selecting the Prescaler ........................................................................................... 11-2
11.4.2 Configuring the Timer for Reference Compare ....................................................... 11-3
11.4.3 Configuring the Timer for Output Mode (TIMER0) .................................................. 11-3
11.5 General-Purpose Timer Registers ............................................................................... 11-3
11.5.1 Timer Mode Registers (TMR0, TMR1) .................................................................... 11-3
11.5.2 Timer Reference Registers (TRR0, TRR1) ............................................................. 11-4
11.5.3 Timer Counters (TCN0, TCN1) ............................................................................... 11-5
11.5.4 Timer Event Registers (TER0, TER1) ..................................................................... 11-5
11.5.5 Timer Initialization Example Code .......................................................................... 11-6
11.5.5.1 Timer0 (Timer Mode Register) ........................................................................... 11-6
11.5.5.2 Timer0 (Timer Reference Register0) ................................................................. 11-6
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SECTION 12
ANALOG TO DIGITAL CONVERTER (ADC)
12.1 ADC Overview .............................................................................................................. 12-1
12.2 ADC Functionality ........................................................................................................ 12-2
12.2.1 ADC Measurement Operation ................................................................................. 12-2
12.2.2 Recommendations for set-up of ADC and external components. ........................... 12-4
SECTION 13
IDE AND FLASHMEDIA INTERFACE
13.1 IDE and SmartMedia Overview .................................................................................... 13-1
13.1.1 Buffer Enables BUFENB1, BUFENB2, and Associated Logic. ............................... 13-2
13.1.2 Generation of IDE-DIOR and IDE-DIOW ................................................................ 13-4
13.1.3 Cycle Termination on CS2 (IDE-DIOR, IDE-DIOW) ............................................... 13-5
13.2 SmartMedia Interface Setup ........................................................................................ 13-6
13.2.1 SmartMedia Timing ................................................................................................. 13-7
13.3 Setting Up the IDE Interface ........................................................................................ 13-8
13.3.1 IDE Timing Diagram ................................................................................................ 13-9
13.4 FlashMedia Interface .................................................................................................. 13-10
13.4.1 FlashMedia Interface Registers ............................................................................ 13-11
13.4.1.1 FlashMedia Clock Generation and Configuration ............................................ 13-11
13.4.2 FlashMedia Interface Operation ............................................................................ 13-12
13.4.2.1 FlashMedia Command Registers in MemoryStick Mode ................................. 13-13
13.4.2.2 FlashMedia Command Register 1 in Secure Digital Mode .............................. 13-13
13.4.2.3 FLASHMEDIA COMMAND REGISTER 2 in Secure Digital Mode .................. 13-14
13.4.3 FlashMedia Data Register .................................................................................... 13-14
13.4.3.1 FlashMedia Status Register ............................................................................. 13-15
13.4.4 FlashMedia Interrupt Interface .............................................................................. 13-15
13.4.5 FlashMedia Interface Operation in MemoryStick Mode ........................................ 13-16
13.4.5.1 Reading Data From the MemoryStick .............................................................. 13-16
13.4.5.2 Writing Data to the MemoryStick ..................................................................... 13-17
13.4.5.3 Interrupt From MemoryStick ............................................................................ 13-18
13.4.6 FlashMedia interface Operation in Secure Digital (SD) mode .............................. 13-19
13.4.6.1 Send Command To Card ................................................................................. 13-19
13.4.6.2 Write Data To Card .......................................................................................... 13-20
13.4.7 Commonly Used Commands in SD Mode ............................................................ 13-22
13.4.7.1 Send Command To Card (No Data) ................................................................ 13-22
13.4.7.2 Send Command To Card (Receive Multiple Data Blocks and Status) ............. 13-23
13.4.7.3 Send Command To Card (Write Multiple Data Blocks) ................................... 13-24
SECTION 14
DMA CONTROLLER MODULE
14.1 DMA Features .............................................................................................................. 14-1
14.2 DMA Signal Description ............................................................................................... 14-1
14.2.1 DMA Request .......................................................................................................... 14-2
14.3 DMA Module Overview ................................................................................................ 14-3
14.4 DMA Programming Model ............................................................................................ 14-4
14.4.1 REQUEST Source Selection .................................................................................. 14-6
14.4.2 Source Address Register ........................................................................................ 14-7
14.4.3 Destination ADDRESS Register ............................................................................. 14-8
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14.4.4 Byte Count Register ................................................................................................ 14-8
14.4.5 DMA Control Register ............................................................................................. 14-9
14.4.6 DMA Status Register ............................................................................................ 14-12
14.4.7 DMA Interrupt Vector Register .............................................................................. 14-14
14.5 Transfer Request Generation ..................................................................................... 14-14
14.5.1 Cycle-Steal Mode .................................................................................................. 14-14
14.5.2 Continuous Mode .................................................................................................. 14-14
14.6 Data Transfer Modes ................................................................................................. 14-14
14.6.1 Dual-Address Transaction .................................................................................... 14-14
14.6.1.1 Dual-Address Read ......................................................................................... 14-15
14.6.1.2 Dual-Address Write .......................................................................................... 14-15
14.7 DMA Transfer Functional Description ....................................................................... 14-15
14.7.1 Channel Initialization and Startup ......................................................................... 14-15
14.7.1.1 Channel Prioritization ....................................................................................... 14-15
14.7.1.2 Programming the DMA .................................................................................... 14-16
14.7.2 Data Transfer ........................................................................................................ 14-16
14.7.2.1 Periphery Request Operation .......................................................................... 14-16
14.7.2.2 Auto Alignment ................................................................................................ 14-17
14.7.2.3 Bandwidth Control ........................................................................................... 14-17
14.7.3 Channel Termination ............................................................................................. 14-17
14.7.3.1 Error Conditions ............................................................................................... 14-17
14.7.3.2 Interrupts .......................................................................................................... 14-17
SECTION 15
UART MODULES
15-1 Module Overview ......................................................................................................... 15-1
15.1.1 Serial Communication Channel .............................................................................. 15-2
15.1.2 Baud-Rate Generator/Timer ................................................................................... 15-2
15.1.3 Interrupt Control Logic ............................................................................................ 15-2
15.2 UART Module Signal Definitions .................................................................................. 15-3
15.2.1 Transmitter Serial Data Output ............................................................................... 15-3
15.2.2 Receiver Serial Data Input ...................................................................................... 15-3
15.2.3 Request-To-Send .................................................................................................... 15-4
15.2.4 Clear-To-Send ........................................................................................................ 15-4
15.3 Operation ..................................................................................................................... 15-4
15.3.1 Baud-Rate Generator/Timer ................................................................................... 15-4
15.3.2 Transmitter and Receiver Operating Modes ........................................................... 15-4
15.3.2.1 Transmitter ......................................................................................................... 15-5
15.3.2.2 Receiver ............................................................................................................. 15-6
16.3.2.3 Receiver FIFO ................................................................................................... 15-8
15.3.3 Looping Modes ....................................................................................................... 15-9
15.3.3.1 Automatic Echo Mode ........................................................................................ 15-9
15.3.3.2 Local Loopback Mode ........................................................................................ 15-9
15.3.3.3 Remote Loopback Mode .................................................................................... 15-9
15.3.4 Multidrop Mode ..................................................................................................... 15-10
15.3.5 Bus Operation ....................................................................................................... 15-12
15.3.5.1 Read Cycles .................................................................................................... 15-12
15.3.5.2 Write Cycles ..................................................................................................... 15-12
15.3.5.3 Interrupt Acknowledge Cycles ......................................................................... 15-12
15.4 Register Description and Programming ..................................................................... 15-12
15.4.1 Register Description .............................................................................................. 15-12
Table of Contents
SCF5250 User’s Manual, Rev. 4
Freescale Semiconductor TOC-9
15.4.1.1 Mode Register 1 (UMR1n) ............................................................................... 15-13
15.4.1.2 Mode Register 2 (UMR2n) ............................................................................... 15-15
15.4.1.3 Status Registers (USRn) ................................................................................. 15-17
15.4.1.4 Clock-Select Registers (USCRn) ..................................................................... 15-18
15.4.1.5 Command Registers (UCRn) ........................................................................... 15-19
15.4.1.6 Miscellaneous Commands ............................................................................... 15-19
15.4.1.6.1 Reset Mode Register Pointer ..................................................................... 15-20
15.4.1.6.2 Reset Receiver ........................................................................................... 15-20
15.4.1.6.3 Reset Transmitter ....................................................................................... 15-20
15.4.1.6.4 Reset Error Status ...................................................................................... 15-20
15.4.1.6.5 Reset Break-Change Interrupt .................................................................... 15-20
15.4.1.6.6 Start Break .................................................................................................. 15-20
15.4.1.6.7 Stop Break .................................................................................................. 15-20
15.4.1.7 Transmitter Commands ................................................................................... 15-20
15.4.1.7.1 No Action Taken ......................................................................................... 15-20
15.4.1.7.2 Transmitter Enable ..................................................................................... 15-21
15.4.1.7.3 Transmitter Disable .................................................................................... 15-21
15.4.1.7.4 Do Not Use ................................................................................................. 15-21
15.4.1.8 Receiver Commands ....................................................................................... 15-21
15.4.1.8.1 No Action Taken ......................................................................................... 15-21
15.4.1.8.2 Receiver Enable ......................................................................................... 15-21
15.4.1.8.3 Receiver Disable ........................................................................................ 15-21
15.4.1.8.4 Do Not Use ................................................................................................. 15-21
15.4.1.9 Receiver Buffer Registers (UBRn) ................................................................... 15-21
15.4.1.10 Transmitter Buffer Registers (UTBn) ............................................................... 15-22
15.4.1.11 Input Port Change Registers UIPCRn) ............................................................ 15-22
15.4.1.12 Auxiliary Control Registers (UACRn) ............................................................... 15-23
15.4.1.13 Interrupt Status Registers (UISRn) ................................................................. 15-23
15.4.1.14 Interrupt Mask Registers (UIMRn) ................................................................... 15-24
15.4.1.15 Baud Rate Generator (MSB) Register (UBG1n) .............................................. 15-25
15.4.1.16 Baud Rate Generator (LSB) Register (UBG2n) ............................................... 15-25
15.4.1.17 Interrupt Vector Registers (UIVRn) .................................................................. 15-25
15.4.1.18 Input Port Registers (UIPn) .............................................................................. 15-26
15.4.1.19 Output Port Data Registers (UOP1n) .............................................................. 15-26
15.4.2 Programming ........................................................................................................ 15-27
15.4.2.1 UART Module Initialization .............................................................................. 15-27
15.4.2.2 I/O Driver Example .......................................................................................... 15-27
15.4.2.3 Interrupt Handling ............................................................................................ 15-27
15.5 UART Module Initialization Sequence ........................................................................ 15-28
SECTION 16
QUEUED SERIAL PERIPHERAL INTERFACE (QSPI) MODULE
16.1 Overview ...................................................................................................................... 16-1
16.2 Module Description ...................................................................................................... 16-1
16.2.1 Interface and Pins ................................................................................................... 16-1
16.2.2 Internal Bus Interface .............................................................................................. 16-2
16.3 Operation ..................................................................................................................... 16-3
16.3.1 QSPI RAM .............................................................................................................. 16-4
16.3.1.1 Transmit RAM .................................................................................................... 16-5
16.3.1.2 Receive RAM ..................................................................................................... 16-5
16.3.1.3 Command RAM ................................................................................................. 16-5
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TOC-10 Freescale Semiconductor
16.3.2 Baud Rate Selection ............................................................................................... 16-5
16.3.3 Transfer Delays ....................................................................................................... 16-6
16.3.4 Transfer Length ....................................................................................................... 16-7
16.3.5 Data Transfer .......................................................................................................... 16-7
16.4 Programming Model ..................................................................................................... 16-7
16.4.1 QSPI Mode Register (QMR) ................................................................................... 16-8
16.4.2 QSPI Delay Register (QDLYR) ............................................................................. 16-10
16.4.3 QSPI Wrap Register (QWR) ................................................................................. 16-10
16.4.4 QSPI Interrupt Register (QIR) ............................................................................... 16-11
16.4.5 QSPI Address Register (QAR) .............................................................................. 16-12
16.4.6 QSPI Data Register (QDR) ................................................................................... 16-13
16.4.7 Command RAM Registers (QCR0–QCR15) ......................................................... 16-13
16.4.8 Programming Example ......................................................................................... 16-15
SECTION 17
AUDIO FUNCTIONS
17.1 Audio Interface Overview ............................................................................................. 17-1
17.1.1 Audio Interface Structure ........................................................................................ 17-2
17.1.1.1 Audio Interrupt Mask and Interrupt Status Registers ......................................... 17-3
17.2 Serial Audio Interface (IIS/EIAJ) .................................................................................. 17-5
17.2.1 IIS/EIAJ Transmitter Descriptions ........................................................................... 17-9
17.2.2 IIS/EIAJ Transmitter Interrupts ................................................................................ 17-9
17.2.3 IIS/EIAJ Receiver Descriptions ............................................................................... 17-9
17.3 Digital Audio Interface (EBU / SPDIF) ........................................................................ 17-10
17.3.1 IEC958 Receive Interface ..................................................................................... 17-13
17.3.1.1 Audio Data Reception ...................................................................................... 17-13
17.3.1.2 Control Channel Reception .............................................................................. 17-13
17.3.1.3 Control Channel Interrupt (IEC958 “C” Channel New Frame) ......................... 17-13
17.3.1.4 Validity Flag Reception .................................................................................... 17-13
17.3.1.5 IEC958 Exception Definition ............................................................................ 17-14
17.3.1.6 EBU Extracted Clock ....................................................................................... 17-14
17.3.1.7 Reception of User Channel and CD-subcode Over IEC958 Receiver ............. 17-14
17.3.1.8 U and Q Receive Register Interrupts ............................................................... 17-16
17.3.1.9 Behavior of User Channel Receive Interface (CD Data) ................................. 17-16
17.3.1.10 Behavior of User Channel Receive Interface (non-CD data) ........................... 17-18
17.3.2 IEC958 (SPDIF) Transmit Interface ...................................................................... 17-18
17.3.2.1 Transmit “C” Channel ...................................................................................... 17-18
17.3.2.2 IEC958 Transmitter Interrupt Conditions ......................................................... 17-19
17.3.2.3 IEC958-3 Ed2 and Tech 3250-E Standards Compliance ................................ 17-19
17.3.2.4 Transmission of U-Channel and CD Subcode Data ........................................ 17-19
17.3.3 CD Subcode Interrupts ......................................................................................... 17-20
17.3.3.1 Free Running Counter Synchronization ........................................................... 17-21
17.3.3.2 Controlling the SFSY Sync Position ................................................................ 17-21
17.3.4 Inserting CD User Channel Data Into IEC958 Transmit Data ............................... 17-21
17.4 Processor Interface Overview .................................................................................... 17-22
17.4.1 Data Exchange Register Descriptions .................................................................. 17-22
17.4.2 Data Exchange Register Overview ....................................................................... 17-24
17.4.2.1 Data In Selection ............................................................................................. 17-24
17.4.3 PDIR and PDOR Field Formatting ........................................................................ 17-26
17.4.4 Overrun and Underrun with PDIR and PDOR Registers ...................................... 17-26
17.4.5 Automatic Resynchronization of FIFOs ................................................................ 17-27
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SCF5250 User’s Manual, Rev. 4
Freescale Semiconductor TOC-11
17.4.6 Audio Interrupts ..................................................................................................... 17-29
17.4.6.1 AudioTick Interrupts ......................................................................................... 17-29
17.4.6.2 PDIR1, PDIR2, and PDIR3, Interrupts ............................................................. 17-29
17.4.6.3 PDOR1, PDOR2, and PDOR3 Interrupts ........................................................ 17-29
17.4.6.4 Audio Interrupt Routines and Timing ............................................................... 17-31
17.4.7 CD-ROM Block Encoder and Decoder ................................................................. 17-32
17.4.7.1 CD-ROM Decoder Interrupts ........................................................................... 17-34
17.4.7.2 CD-ROM Encoder Interrupts ........................................................................... 17-35
17.5 DMA Channel Interaction ........................................................................................... 17-35
17.6 Phase/Frequency Determination and Xtrim Function ................................................ 17-36
17.6.1 Incoming Source Frequency Measurement .......................................................... 17-36
17.6.1.2 Filtering for the Discrete Time Oscillator .......................................................... 17-38
17.6.2 XTRIM Option - Locking Xtal Clock to Incoming Signal ........................................ 17-38
17.6.3 XTRIM Internal Logic ............................................................................................ 17-39
17.7 Audio Interface Memory Map ..................................................................................... 17-40
SECTION 18
I
2
C MODULES
18.1 I
2
C Overview ................................................................................................................ 18-1
18.2 I
2
C Interface Features .................................................................................................. 18-1
18.3 I
2
C System Configuration ............................................................................................. 18-2
18.4 I
2
C Protocol .................................................................................................................. 18-3
18.4.1 START Signal ......................................................................................................... 18-3
18.4.2 Slave Address Transmission .................................................................................. 18-3
18.4.3 Data Transfer .......................................................................................................... 18-4
18.4.4 Repeated START Signal ......................................................................................... 18-4
18.4.5 STOP Signal ........................................................................................................... 18-4
18.4.6 Arbitration Procedure .............................................................................................. 18-4
18.4.7 Clock Synchronization ............................................................................................ 18-4
18.4.8 Handshaking ........................................................................................................... 18-5
18.4.9 Clock Stretching ...................................................................................................... 18-5
18.5 Programming Model ..................................................................................................... 18-5
18.5.1 I
2
C Address Registers (MADR) .............................................................................. 18-6
18.5.2 I
2
C Frequency Divider Registers (MFDR) ............................................................... 18-6
18.5.3 I
2
C Control Registers (MBCR) ................................................................................ 18-8
18.5.4 I
2
C Status Registers (MBSR) .................................................................................. 18-9
18.5.5 I
2
C Data I/O Registers (MBDR) ............................................................................ 18-11
18.6 I
2
C Programming Examples ....................................................................................... 18-11
18.6.1 Initialization Sequence .......................................................................................... 18-11
18.6.2 Generation of START ........................................................................................... 18-12
18.6.3 Post-Transfer Software Response ........................................................................ 18-12
18.6.4 Slave Mode ........................................................................................................... 18-14
18.6.5 Arbitration Lost ...................................................................................................... 18-14
SECTION 19
BOOT ROM
19.1 General description ...................................................................................................... 19-1
19.1.1 Boot modes ............................................................................................................. 19-1
19.2 Boot ROM Operation .................................................................................................... 19-2
19.2.1 Initialization ............................................................................................................. 19-2
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TOC-12 Freescale Semiconductor
19.2.1.1 Boot ROM Memory map .................................................................................... 19-2
19.2.1.2 Internal SRAM usage ......................................................................................... 19-2
19.2.2 Boot type detection ................................................................................................. 19-3
19.2.3 Serial Boot Data Format ......................................................................................... 19-3
19.2.3.1 Command Encoding / Size Encoding: ............................................................... 19-4
19.2.3.2 Supported Commands: ...................................................................................... 19-4
19.2.4 IDE Boot DATA FORMAT ....................................................................................... 19-4
19.2.5 Boot modes ............................................................................................................. 19-5
19.2.5.1 Boot from I
2
C / SPI – master mode ................................................................... 19-5
19.2.5.2 Boot from I
2
C - slave mode ............................................................................... 19-6
19.2.5.3 Boot from UART ................................................................................................ 19-6
19.2.5.3.1 UART Protocol .............................................................................................. 19-6
19.2.5.4 Boot from IDE device ......................................................................................... 19-6
19.3 Creating appropriate Boot record files ......................................................................... 19-7
SECTION 20
DEBUG SUPPORT
20.1 Breakpoint (BKPT) ....................................................................................................... 20-1
20.1.1 Debug Support Signals ........................................................................................... 20-1
20.1.2 Debug Data (DDATA[3:0]) ...................................................................................... 20-2
20.1.3 Development Serial Clock (DSCLK) ....................................................................... 20-2
20.1.4 Development Serial Input (DSI) .............................................................................. 20-2
20.1.5 Development Serial Output (DSO) .......................................................................... 20-2
20.1.6 Processor Status (PST[2:0]) ................................................................................... 20-2
20.1.7 Processor Status Clock (PSTCLK) ......................................................................... 20-3
20.2 Real-Time Trace SUPPORT ........................................................................................ 20-4
20.2.1 Processor Status Signal Encoding .......................................................................... 20-4
20.2.1.1 Continue Execution (PST = $0) ......................................................................... 20-4
20.2.1.2 Begin Execution of an Instruction (PST = $1) .................................................... 20-4
20.2.1.3 Entry into User Mode (PST = $3) ....................................................................... 20-4
20.2.1.4 Begin Execution of PULSE or WDDATA Instructions (PST = $4) ..................... 20-4
20.2.1.5 Begin Execution of Taken Branch (PST = $5) ................................................... 20-5
20.2.1.6 Begin Execution of RTE Instruction (PST = $7) ................................................. 20-6
20.2.1.7 Begin Data Transfer (PST = $8–$B) .................................................................. 20-6
20.2.1.9 Exception Processing (PST = $C) ..................................................................... 20-6
20.2.1.10 Emulator Mode Exception Processing (PST = $D) ............................................ 20-6
20.2.1.11 Processor Stopped (PST = $E) ......................................................................... 20-6
20.2.1.12 Processor Halted (PST = $F) ............................................................................. 20-6
20.3 Background-Debug Mode (BDM) ................................................................................. 20-6
20.3.1 CPU Halt .................................................................................................................20-7
20.3.2 BDM Serial Interface ............................................................................................... 20-8
20.3.2.1 Receive Packet Format ..................................................................................... 20-8
20.3.2.2 Transmit Packet Format .................................................................................... 20-9
20.3.3 BDM Command Set ................................................................................................ 20-9
20.3.3.1 BDM Command Set Summary ........................................................................ 20-10
20.3.3.2 ColdFire BDM Commands ............................................................................... 20-11
20.3.4 Command Sequence Diagram .............................................................................. 20-12
20.3.4.1 Command Set Descriptions ............................................................................. 20-13
20.3.4.1.1 Read Address/Data Register (RAREG/RDREG) ........................................ 20-13
20.3.4.1.2 Write Address/Data Register (WAREG and WDREG) ............................... 20-14
20.3.4.1.3 Read Memory Location (READ) ................................................................. 20-15
Table of Contents
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Freescale Semiconductor TOC-13
20.3.4.1.4 Write Memory Location (WRITE) ................................................................ 20-16
20.3.4.1.5 Dump Memory Block (DUMP) .................................................................... 20-17
20.3.4.1.6 Fill Memory Block (FILL) ............................................................................. 20-19
20.3.4.1.7 Resume Execution (GO) ............................................................................ 20-21
20.3.4.1.8 No Operation (NOP) ................................................................................... 20-21
20.3.4.1.9 Read Control Register (RCREG) ................................................................ 20-22
20.3.4.1.10 Write Control Register (WCREG) ............................................................... 20-23
20.3.4.1.11 Read Debug Module Register (RDMREG) ................................................. 20-24
20.3.4.1.12 Write Debug Module Register (WDMREG) ................................................ 20-25
20.3.4.1.13 Unassigned Opcodes ................................................................................. 20-26
20.3.4.2 BDM Accesses of the EMAC Registers ........................................................... 20-26
20.4 Real-Time Debug Support ......................................................................................... 20-27
20.4.1 Theory of Operation .............................................................................................. 20-27
20.4.1.1 Emulator Mode ................................................................................................ 20-28
20.4.1.2 Debug Module Hardware ................................................................................. 20-29
20.4.1.2.1 Reuse of Debug Module Hardware (Rev. A) .............................................. 20-29
20.4.2 Programming Model .............................................................................................. 20-29
20.4.2.1 Address Breakpoint Registers ......................................................................... 20-30
20.4.2.1.1 Address Attribute Trigger Register ............................................................. 20-31
20.4.2.2 Program Counter Breakpoint Register (PBR, PBMR) ..................................... 20-32
20.4.2.3 Data Breakpoint Registers (DBR, DBMR) ....................................................... 20-33
20.4.2.4 Trigger Definition Register (TDR) .................................................................... 20-34
20.4.2.5 Configuration/Status Register (CSR) ............................................................... 20-36
20.4.2.6 BDM Address Attribute (BAAR) ....................................................................... 20-39
20.4.3 Concurrent BDM and Processor Operation .......................................................... 20-40
20.4.4 Freescale-Recommended BDM Pinout ................................................................ 20-40
SECTION 21
IEEE 1149.1 TEST ACCESS PORT (JTAG)
21.1 JTAG Overview ............................................................................................................ 21-1
21.2 JTAG Signal Descriptions ........................................................................................... 21-2
21.2.1 Test Clock - (TCK) .................................................................................................. 21-3
21.2.2 Test Reset/Development Serial Clock - (TRST/DSCLK) ........................................ 21-3
21.2.3 Test Mode Select/ Breakpoint (TMS/BKPT) ........................................................... 21-3
21.2.4 Test Data Input/Development Serial Input - (TDI/DSI) ............................................ 21-4
21.2.5 Test Data Output/Development Serial Output - (TDO/DSO) .................................. 21-4
21.3 TAP Controller .............................................................................................................. 21-4
21.4 JTAG Registers ............................................................................................................ 21-6
21.4.1 JTAG Instruction Shift Register .............................................................................. 21-6
21.4.1.1 EXTEST Instruction ........................................................................................... 21-6
21.4.1.2 IDCODE ............................................................................................................. 21-6
21.4.1.3 SAMPLE/PRELOAD Instruction ........................................................................ 21-7
21.4.1.4 CLAMP Instruction ............................................................................................. 21-7
21.4.1.5 HIGHZ Instruction .............................................................................................. 21-7
21.4.1.6 BYPASS Instruction ........................................................................................... 21-7
21.4.2 IDcode Register ...................................................................................................... 21-8
21.4.3 JTAG Boundary Scan Register ............................................................................... 21-8
21.4.4 JTAG Bypass Register ............................................................................................ 21-9
21.5 Restrictions .................................................................................................................. 21-9
21.6 Disabling IEEE 1149.1A Standard Operation .............................................................. 21-9
21.7 Obtaining the IEEE 1149.1A Standard ....................................................................... 21-10
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TOC-14 Freescale Semiconductor
SECTION 22
ELECTRICAL SPECIFICATIONS
22.1 IIS Module AC Timing Specifications ......................................................................... 22-17
SECTION 23
MECHANICAL DATA
23.1 Package ....................................................................................................................... 23-1
23.2 Pin Assignment ............................................................................................................ 23-1
SCF5250 User’s Manual, Rev. 4
Freescale Semiconductor LOF-1
LIST OF FIGURES
Figure 1-1 SCF5250 Block Diagram ................................................................................................1-2
Figure 3-1 V2 ColdFire Processor Core Pipelines ........................................................................... 3-1
Figure 3-2 User Programming Model .............................................................................................. 3-3
Figure 3-3 Supervisor Programming Model ..................................................................................... 3-5
Figure 3-4 Vector Base Register (VBR) .......................................................................................... 3-6
Figure 3-5 Exception Stack Frame Form ......................................................................................... 3-8
Figure 4-1 Phase-Locked Loop Module Block Diagram .................................................................. 4-1
Figure 5-1 Instruction Cache Block Diagram ................................................................................... 5-2
Figure 7-1 Synchronous DRAM Controller Block Diagram .............................................................. 7-2
Figure 7-2 SCF5250 SDRAM Interface ........................................................................................... 7-4
Figure 7-3 DRAM Control Register (DCR) (Synchronous Mode) .................................................... 7-5
Figure 7-4 DACR0 (Synchronous Mode) ......................................................................................... 7-6
Figure 7-5 DRAM Controller Mask Registers (DMR0) ..................................................................... 7-8
Figure 7-6 Burst Read SDRAM Access ......................................................................................... 7-12
Figure 7-7 Burst Write SDRAM Access ......................................................................................... 7-13
Figure 7-8 Synchronous, Continuous Page-Mode Access—Consecutive Reads ......................... 7-14
Figure 7-9 Synchronous, Continuous Page-Mode Access—Read after Write .............................. 7-15
Figure 7-10 Auto-Refresh Operation ............................................................................................... 7-16
Figure 7-11 Self-Refresh Operation ................................................................................................ 7-17
Figure 7-12 Mode Register Set (mrs) Command ............................................................................ 7-18
Figure 7-13 Initialization Values for DCR ........................................................................................ 7-19
Figure 7-14 SDRAM Configuration .................................................................................................. 7-20
Figure 7-15 DACR Register Configuration ...................................................................................... 7-21
Figure 7-16 DMR0 Register ............................................................................................................. 7-22
Figure 7-17 Mode Register Mapping to SCF5250 A[31:0] .............................................................. 7-23
Figure 8-1 Signal Relationship to BCLK for Non-DRAM Access ..................................................... 8-4
Figure 8-2 Connections for External Memory Port Sizes ................................................................ 8-5
Figure 8-3 Read Cycle Flowchart .................................................................................................... 8-7
Figure 8-4 Basic Read Bus Cycle .................................................................................................... 8-7
Figure 8-5 Write Cycle Flowchart .................................................................................................... 8-9
Figure 8-6 Basic Write Bus Cycle .................................................................................................... 8-9
Figure 8-7 Back-to-Back Bus Cycle ...............................................................................................8-10
Figure 8-8 Line Read Burst (one wait cycle) ................................................................................. 8-11
Figure 8-9 Line Read Burst (no wait cycles)Line Write Bus Cycles .............................................. 8-12
Figure 8-10 Line Read Burst-Inhibited ............................................................................................. 8-12
Figure 8-11 Line Write Burst (no wait cycles ................................................................................... 8-13
Figure 8-12 Line Write Burst with One Wait State ........................................................................... 8-13
Figure 8-13 Line Write Burst-Inhibited ............................................................................................. 8-14
Figure 8-14 Misaligned Longword Transfer ..................................................................................... 8-15
Figure 8-15 Misaligned Word Transfer ............................................................................................8-15
Figure 8-16 Master Reset Timing .................................................................................................... 8-16
Figure 9-1 SCF5250 Unterminated Access Recovery ................................................................... 9-17
Figure 9-2 General-Purpose Pin Logic for Pin SCLK3/GPIO35 .................................................... 9-26
Figure 11-1 Timer Block Diagram Module Operation ...................................................................... 11-2
Figure 12-1 ADC Convertor Block Diagram and External Components .......................................... 12-2
Figure 13-1 Bus Setup with IDE and SmartMedia Interface ............................................................ 13-1
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LOF-2 Freescale Semiconductor
Figure 13-2 Buffer Enables (BUFENB1 and BUFENB2) ................................................................. 13-2
Figure 13-3 DIOR Timing Diagram .................................................................................................. 13-5
Figure 13-4 Non-IORDY Controlled IDE/SmartMedia TA Timing .................................................... 13-6
Figure 13-5 CS2 (IDE-DIOR, IDE-DIOW) ........................................................................................ 13-6
Figure 13-6 SmartMedia Timing ...................................................................................................... 13-7
Figure 13-7 IDE Timing ................................................................................................................... 13-9
Figure 13-8 FlashMedia Block Diagram ........................................................................................ 13-10
Figure 13-9 Shift Register .............................................................................................................. 13-12
Figure 13-10 Reading Data From MemoryStick .............................................................................. 13-16
Figure 13-11 Reading Data From MemoryStick Timing .................................................................. 13-17
Figure 13-12 Writing Data To MemoryStick .................................................................................... 13-17
Figure 13-13 Writing Data to MemoryStick Timing .......................................................................... 13-18
Figure 13-14 Interrupt From MemoryStick ....................................................................................... 13-18
Figure 13-15 Interrupt From MemoryStick ....................................................................................... 13-19
Figure 13-16 Send Command To Card ........................................................................................... 13-19
Figure 13-17 Writing To Card With Busy ......................................................................................... 13-20
Figure 13-18 Writing To Card Without Busy .................................................................................... 13-21
Figure 13-19 Read Data From Card ................................................................................................ 13-22
Figure 14-1 DMA Signal Diagram. ................................................................................................... 14-2
Figure 14-2 Dual Address Transfer ................................................................................................. 14-4
Figure 15-1 UART Block Diagram ................................................................................................... 13-1
Figure 15-2 External and Internal Interface Signals ........................................................................ 13-3
Figure 15-3 Baud-Rate Timer Generator Diagram .......................................................................... 13-4
Figure 15-4 Transmitter and Receiver Functional Diagram ............................................................. 13-5
Figure 15-5 Transmitter Timing Diagram ......................................................................................... 13-6
Figure 15-6 Receiver Timing Diagram .............................................................................................13-7
Figure 15-7 Looping Modes Functional Diagram .......................................................................... 13-10
Figure 15-8 Multidrop Mode Timing Diagram ................................................................................ 13-11
Figure 15-9 UART Software Flowchart (1 of 5) ............................................................................. 13-29
Figure 15-10 UART Software Flowchart (2 of 5) ............................................................................. 13-30
Figure 15-11 UART Software Flowchart (3 of 5) ............................................................................. 13-31
Figure 15-12 UART Software Flowchart (4 of 5) ............................................................................. 13-32
Figure 15-13 UART Software Flowchart (5 of 5) ............................................................................. 13-33
Figure 16-1 QSPI Block Diagram .................................................................................................... 16-2
Figure 16-2 QSPI RAM Model ......................................................................................................... 16-4
Figure 16-3 QSPI Mode Register (QMR) ........................................................................................ 16-8
Figure 16-4 QSPI Clocking and Data Transfer Example ................................................................. 16-9
Figure 16-5 QSPI Delay Register (QDLYR) .................................................................................. 16-10
Figure 16-6 QSPI Wrap Register (QWR) ...................................................................................... 16-10
Figure 16-7 QSPI Interrupt Register (QIR) .................................................................................... 16-11
Figure 16-8 QSPI Address Register (QAR) ................................................................................... 16-13
Figure 16-9 QSPI Data Register (QDR) ........................................................................................ 16-13
Figure 16-10 Command RAM Registers (QCR0–QCR15) .............................................................. 16-13
Figure 16-11 QSPI Timing ............................................................................................................... 16-15
Figure 17-1 Audio Interface Block Diagram ..................................................................................... 17-2
Figure 17-2 IIS/EIAJ Timing Diagram (16 SCLK edges per word) .................................................. 17-9
Figure 17-3 IIS/EIAJ Timing Diagram (24 or 32 SCLK edges per word) ....................................... 17-10
Figure 17-4 CD-Subcode Interface ................................................................................................ 17-19
Figure 17-5 Data Format on CD-Subcode Interface Out ............................................................... 17-20
Figure 17-6 Processor/Audio Module Interface ............................................................................. 17-22
Figure 17-7 Automatic Resynchronization FSM of left-right FIFOs ............................................... 17-27
Figure 17-8 Audio Transmit / Receive FIFOs ................................................................................ 17-32
List of Figures
SCF5250 User’s Manual, Rev. 4
Freescale Semiconductor LOF-3
Figure 17-9 Block Decoder ............................................................................................................ 17-34
Figure 17-10 Block Encoder ............................................................................................................ 17-35
Figure 17-11 Frequency Measurement Circuit ................................................................................ 17-37
Figure 17-12 XTRIM External Circuit ............................................................................................... 17-39
Figure 17-13 PDM Modulator Used on Xtrim Output ....................................................................... 17-39
Figure 18-1 I
2
C Module Block Diagram ........................................................................................... 18-2
Figure 18-2 I
2
C Standard Communication Protocol ........................................................................ 18-3
Figure 18-3 Synchronized Clock SCL ............................................................................................. 18-5
Figure 18-4 Flow-Chart of Typical I2C Interrupt Routine ............................................................... 18-15
Figure 19-1 I
2
C Master Boot Mode .................................................................................................. 19-5
Figure 19-2 Boot Loader IDE Interface ............................................................................................ 19-7
Figure 20-1 Processor/Debug Module Interface .............................................................................. 20-1
Figure 20-2 Example PST/DDATA Diagram ................................................................................... 20-5
Figure 20-3 1BDM Serial Transfer ................................................................................................... 20-8
Figure 20-4 Command Sequence Diagram ................................................................................... 20-12
Figure 20-5 Command/Result Formats ......................................................................................... 20-13
Figure 20-6 Read A/D Register Command Sequence .................................................................. 20-14
Figure 20-7 Write A/D Register Command Sequence ................................................................... 20-14
Figure 20-8 WAREG/WDREG Command Format ......................................................................... 20-15
Figure 20-9 READ Command/Result Format ................................................................................ 20-15
Figure 20-10 Read Memory Location Command Sequence ........................................................... 20-16
Figure 20-11 Write Memory Location Command Sequence ........................................................... 20-17
Figure 20-12 DUMP Command/Result Format ............................................................................... 20-18
Figure 20-13 DUMP Memory Block Command Sequence .............................................................. 20-19
Figure 20-14 Fill Memory Block Command Sequence .................................................................... 20-20
Figure 20-15 Resume Execution ..................................................................................................... 20-21
Figure 20-16 No Operation Command Sequence ........................................................................... 20-22
Figure 20-17 RCREG Command/Result Formats ........................................................................... 20-22
Figure 20-18 WCREG Command Sequence ................................................................................... 20-23
Figure 20-19 Write Control Register Command Sequence ............................................................. 20-23
Figure 20-20 RDMREG Command/Result Formats ........................................................................ 20-24
Figure 20-21 Read Debug Module Register Command Sequence ................................................. 20-24
Figure 20-22 WDMREG BDM Command Format ........................................................................... 20-25
Figure 20-23 Write Debug Module Register Command Sequence ................................................. 20-26
Figure 20-24 Read Control Register Command Sequence ............................................................. 20-27
Figure 20-25 Debug Programming Mode ........................................................................................ 20-30
Figure 20-26 Recommended BDM Connector ................................................................................ 20-41
Figure 21-1 JTAG Test Logic Block Diagram .................................................................................. 21-2
Figure 21-2 JTAG TAP Controller State Machine ........................................................................... 21-5
Figure 21-3 Disabling JTAG in JTAG Mode .................................................................................... 21-9
Figure 21-4 Disabling JTAG in Debug Mode ................................................................................. 21-10
Figure 22-1 Clock Timing Definition ................................................................................................ 22-4
Figure 22-2 Input/Output Timing Definition-1 .................................................................................. 22-7
Figure 22-3 Input/Output Timing Definition-II .................................................................................. 22-8
Figure 22-4 Debug Timing Definition ............................................................................................... 22-9
Figure 22-5 Timer Module Timing Definition ................................................................................. 22-10
Figure 22-6 UART Timing Definition .............................................................................................. 22-11
Figure 22-7 I2C Timing Definition .................................................................................................. 22-13
Figure 22-8 I2C and System Clock Timing Relationship ............................................................... 22-14
Figure 22-9 General-Purpose Parallel Port Timing Definition ....................................................... 22-15
Figure 22-10 JTAG Timing .............................................................................................................. 22-16
Figure 22-11 SCLK Input, SDATA Output Timing ........................................................................... 22-17
SCF5250 User’s Manual, Rev. 4
LOF-4 Freescale Semiconductor
Figure 22-12 SCLK Output, SDATAO Output Timing Diagram ....................................................... 22-17
Figure 22-13 SCLK Input/Output, SDATAI Input Timing Diagram ................................................... 22-18
Figure 23-1 144 QFP Package (1 of 3) ........................................................................................... 23-8
Figure 23-2 144 QFP Package (2 of 3) ........................................................................................... 23-9
Figure 23-3 144 QFP Package (3 of 3) ......................................................................................... 23-10
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