©
1998 Motorola, Inc. All Rights Reserved.
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
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are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
MPC821FADS
User’s Manual
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PowerPC
™
is a registered trademark of IBM Corporation and is used by Motorola under license from IBM.
I
2
C
®
is a registered tradmeark of Philips Corporation.
All other trademarks are the property of their respective owners.
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MOTOROLA
MPC821FADS-DB USER’S MANUAL
1-1
SECTION 1
INTRODUCTION
This document is the MPC821FADS daughterboard operation guide. The daughterboard
encompasses the MPC821 device along with some necessary logic that must be in close
proximity to the MPC821 and peripherals. These peripherals are dedicated to the MPC821,
but are not necessarily required for any other member of the MPC8xx Family. The
daughterboard has two sets of matching connectors—one set on the print side (on the
bottom of the board) and one on the component side (on the top of the board). Those on the
print side connect to a matching set found on the MPC8xxFADS, while those on the
component side are to serve hardware expansion via a dedicated adaptor. Also a set of logic
analyzer connectors is featured matching the new high-density HP16500 logic analyzer
adaptors to provide fast connection to a logic analyzer while saving board space and
reducing EMI.
1.1 TERMINOLOGY
• ADI—Application Development Interface
• ADS—Application Development System
• BCSR—Board Control and Status Register
• BGA—Ball Grid Array
• DB—Daughterboard
• GPCM—General-Purpose Chip-Select Machine
• GPL—General-Purpose Line (associated with the UPM)
• I/R—Infra-Red
• UPM—User-Programmable Machine
• ZIF—Zero Input Force
1.2 RELATED DOCUMENTATION
• MPC821 User’s Manual
• SDS Monitor User’s Manual
• MPC8bug User’s Manual
• ADI Board Specification
• MPC8xxFADS User’s Manual
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Introduction
1-2
MPC821FADS-DB USER’S MANUAL
MOTOROLA
1.3 SPECIFICATIONS
The MPC821FADS daughterboard specifications are shown in Table 1-1.
1.4 FEATURES
• MPC821 Operation at a Maximum 50MHz
• Selectable KAPWR Source—3.3V or Externally Supplied
• Selectable VDDL Source—3.3V or 2V
• Selectable Clock Source—32768Hz Crystal Resonator or 4MHz Clock Generator That
Can be Easily Changed to Any 3.3V-Powered Oscillator with a 3–5MHz Frequency
Range
• On-Board Expansion Connectors, Including All MPC821 Pins and MPC8xxFADS
Control and Status Signals.
• Onboard High-Density Logic Analyzer Connectors That Support Fast Connection to
HP16500 Logic Analyzer
• MPC821 Modem Tool Support
Table 1-1. MPC821FADS Daughterboard Specifications
CHARACTERISTICS SPECIFICATIONS
Microprocessor MPC821 @ 50MHz
Operating temperature
0
O
C – 30
O
C
Storage temperature
-25
O
C to 85
O
C
Relative humidity 5% to 90% (noncondensing)
Dimensions:
Length
Width
Thickness
5.87" (145mm)
4.37" (125mm)
0.063" (1.6mm)
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Introduction
MOTOROLA
MPC821FADS-DB USER’S MANUAL
1-3
Figure 1-1. MPC821FADS Daughterboard Block Diagram
MPC821
CLOCKS
DAUGHTER
EXPANSION
CONNECTORS
EXPANSION
CONNECTORS
EXPANSION
CONNECTORS
BOARD
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MOTOROLA
MPC821FADS-DB USER’S MANUAL
2-1
SECTION 2
INSTALLATION
This section contains information about preparing, configuring, and installing the
MPC821FADS daughterboard. When you receive your daughterboard it should already be
connected to the MPC8xxFADS motherboard. You should unpack the shipping carton and
verify the contents against the packing list. If the contents were damaged during shipping,
call your local Motorola sales office, explain the problem, and you should receive another
package. If the contents are undamaged, save the packing slip and start configuring the
board for your design.
2.1 CONFIGURING THE BOARD
Before you configure the MPC821FADS daughterboard, you may have to change the
jumpers settings before you can install the board into your system. Since they are factory
set and tested, they may not be set correctly for your particular configuration. Figure 2-1
illustrates the location of these jumpers, LEDs, and connectors on the board. The
MPC821FADS daughterboard settings contain the following parameters that you can
change for your specific configuration:
• Clock generator
• Power-on reset source
• MPC821 keep-alive power source
• MPC821 internal logic supply source
Caution:
Avoid touching the integrated circuitry of the board with your hands since static
discharge can damage circuits.
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Installation
2-2
MPC821FADS-DB USER’S MANUAL
MOTOROLA
Figure 2-1. MPC821FADS Daughterboard Parts Locator (Top Side)
HALO
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Installation
MOTOROLA
MPC821FADS-DB USER’S MANUAL
2-3
2.1.1 Replacing the Clock Generator
When replacing the clock generator (U1), all you need to know is that there are two supply
levels. A 5V supply is available at Pin 14 and a 3.3V supply is available at Pin 11. To replace
it, just pop it out of the socket. Figure 2-2 illustrates that a 5V oscillator (with 3.3V output
only) can be used with a 14-pin form-factor, while 3.3V oscillators can be used with an 8-pin
form-factor.
Inserting a 14-pin form-factor 3.3V clock generator into U1 could cause permanent damage
to your device. Since the MPC821 clock input is not 5V-tolerant, any clock generator
inserted into U1 must have a 3.3V-compatible output. If you insert a 5V output clock
generator into U1, you could cause permanent damage to the MPC821 microprocessor.
Figure 2-2. U1 Power Sources
GND
3.3V
5V1
7
8
14
U1
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Installation
2-4
MPC821FADS-DB USER’S MANUAL
MOTOROLA
2.1.2 Selecting the Power-On Reset Source
The functionality of the power-on reset logic changes with each revision of the MPC821. For
your purposes, this means that you may need to select a different source to generate a
power-on reset. To select your power-on reset source, you need to set J1 on the
MPC821FADS daughterboard. When the J1 jumper is between positions 1 and 2, a
power-on reset is generated by the keep-alive power rail (KAPWR). For example, when
KAPWR goes below 2.005V, a power-on reset is generated. When the J1 jumper is between
positions 2 and 3, a power-on reset is generated from the main 3.3V power rail. In other
words, when the 3.3V power rail gets below 2.805V, a power-on reset is generated.
2.1.3 Selecting the Keep-Alive Power Source
The J2 jumper is used to select the keep-alive power source. When the J2 jumper is
between positions 1 and 2, the keep-alive power is fed from the main 3.3V bus. When you
need to connect an external power source (such as a battery) to the keep-alive power rail,
it should be connected between positions 2 (the positive pole) and 3 (GND).
Figure 2-3. Power-On Reset Source
Figure 2-4. Keep-Alive Power Source
1
1
J1
J1
KEEP-ALIVE POWER RAIL
MAIN POWER RAIL
1
1
J2
J2
+
–
EXTERNAL
3.3V
KAPWR
GND
3.3V
KAPWR
GND
KAPWR FROM 3.3V KAPWR FROM EXTERNAL
POWER SUPPLY
POWER SUPPLY
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Installation
MOTOROLA
MPC821FADS-DB USER’S MANUAL
2-5
2.1.4 Selecting the VDDL Source
The J3 jumper is used to select the VDDL, which supplies the MPC821’s internal logic.
When the J3 jumper is between positions 1 and 2, VDDL is supplied with 3.3V of power.
When the J3 jumper is between positions 2 and 3, VDDL is supplied with 2.2V of power. The
J3 jumper is factory set between positions 1 and 2.
Figure 2-5. VDDL Source
1
1
3.3V VDDL 2V VDDL
J3 J3
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MOTOROLA
MPC821FADS-DB USER’S MANUAL
3-1
SECTION 3
OPERATION
This section contains the necessary information you need to operate the MPC821FADS
daughterboard.
3.1 INDICATORS
The MPC821FADS daughterboard does not have any switches, but it has five indicators.
3.1.1 Ground Bridges
There are four ground (GND) bridges on the MPC821FADS daughterboard. They can be
used to assist you with easy ground access points for general measurements and a logic
analyzer connection.
3.1.2 3.3V Indicator
The yellow 3.3V light (LD1) indicates that the 3.3V power bus is receiving power from the
MPC8xxFADS motherboard.
3.1.3 Memory Map
The memory map is the same on all daughterboards. See
Section 3.3 Memory Map
of the
MPC8xxFADS User’s Manual
for more information.
3.1.4 Programming the MPC821 Registers
To program the MPC821 registers, see
Section 3.1.7 Programming the MPC821
Registers
of the
MPC8xxFADS User’s Manual.
Warning:
The onboard GND bridges physically resemble the J4 jumper and you should
take care not to mistake it for a GND jumper. Doing so could cause permanent
damage to your MPC821FADS daughterboard or MPC8xxFADS
motherboard. When you are connecting to a GND bridge, use only insulated
GND clips to keep from damaging the board.
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MOTOROLA
MPC821FADS-DB USER’S MANUAL
4-1
SECTION 4
FUNCTIONALITY
This section describes the main functions of the MPC821FADS daughterboard.
• Reset
• Interrupts
• Clock generator
• LCD panel support
• Board control and status registers
4.1 RESET
There are three sources of reset for the MPC821 microprocessor:
• Power-on reset
• Hard reset
• Soft reset
4.1.1 Power-On Reset
On the MPC821FADS daughterboard, a power-on reset can be generated from a keep-alive
power bus or a main power bus. The J1 jumper is used to select one of these sources. When
you select the keep-alive power source, a dedicated voltage detector made by Seiko
(S-8051HN-CD-X), which has a detection voltage range of 1.795–2.005V, generates the
power-on reset. During a keep-alive power-on, or when there is a voltage drop of that input
into the above range, a power-on reset is generated (the PORESET
input of the MPC821 is
asserted for approximately 4 seconds).
When you select the main power source, a dedicated voltage detector made by Seiko
(S-8052ANY-NH-X), with a detection voltage range of 2.595–2.805V, generates the
power-on reset. During a main 3.3V bus power-on, or when there is a voltage drop of that
input into the above range, a power-on reset is generated (the PORESET
input of the
MPC821 is asserted for approximately 4 seconds). The main power-on reset also generates
a power-on reset to all logic on the motherboard.
The power-on reset configuration is read by the MPC821 when PORESET
is asserted to the
MPC821. See
Section 4.1.6.1 Power-On Reset Configuration
of the
MPC8xxFADS
User’s Manual
for more information.
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Functionality
4-2
MPC821FADS-DB USER’S MANUAL
MOTOROLA
4.1.2 Hard Reset
A hard reset is generated from four possible sources:
• A main power-on reset
• A manual hard reset generated on the motherboard
• A debug port hard reset
• An internal source of the MPC821
When the open-drain HRESET
signal is asserted, hard reset configuration data is driven on
the data bus by the motherboard logic. See
Section 4.1.6.2 Hard Reset Configuration
of
the
MPC8xxFADS User’s Manual
for details.
4.1.3 Soft Reset
A soft reset is generated from three possible sources:
• The debug port controller on the motherboard
• A manual soft reset generated on the motherboard
• An internal source of the MPC821
The motherboard logic makes a soft reset configuration available to the MPC821 when a
soft reset is generated to the MPC821. See
Section 4.1.6.2 Soft Reset Configuration
of
the
MPC8xxFADS User’s Manual
for details.
4.2 INTERRUPTS
The only external interrupt that is applied to the MPC821 via its interrupt controller is the
abort (NMI) interrupt, which is generated by a push-button and logic that resides on the
motherboard.
4.3 CLOCK GENERATOR
Although most of the clock generator logic is found on the daughterboard, it is explained in
detail in the motherboard manual since it is common to all daughterboards. See
Section 4.3
Clock Generator
of the
MPC8xxFADS User’s Manual
for more information.
4.4 LCD PANEL SUPPORT
A dedicated LCD connector is provided with your board to allow connection to an LCD panel.
This connector contains the MPC821 Port D pins. The LCD connector is a superset of the
LCD connector on the MPC821FADS board, which makes it easy to move tools between
the two boards and to connect the additional color bits.
To make connecting even easier, there are 5V supply pins available on the LCD connector.
For a description of these signals, refer to Table 5-8 in
Section 5 Signal Descriptions
.
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Functionality
MOTOROLA
MPC821FADS-DB USER’S MANUAL
4-3
4.5 BOARD CONTROL AND STATUS REGISTERS
Most board control and status register (BCSR) control signals and some of the status signals
are available on the motherboard connectors and on the expansion connectors. The BCSRs
control most of the functions available on the MPC821FADS daughterboard and the
MPC8xxFADS motherboard.
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MOTOROLA
MPC821FADS-DB USER’S MANUAL
5-1
SECTION 5
SIGNAL DESCRIPTIONS
This section contains signal information for supporting, maintaining, as well as connecting
to, the MPC821FADS daughterboard.
5.1 INTERCONNECT SIGNALS
The MPC821FADS daughterboard uses the following connectors to interconnect with
external devices.
• P1, P2, P3, P4, P5, P6, and P8—Logic analyzer connectors
• PM1, PM2, PM3, and PM4—Motherboard connectors
• PX1, PX2, PX3, and PX4—Expansion connectors
• P7—LCD panel connector
• MPC8xxFADS’s P8—Serial port expansion connector
1
1.
This connector is located on the motherboard. It is documented here since its contents depends on the
daughterboard.
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Signal Descriptions
5-2
MPC821FADS-DB USER’S MANUAL
MOTOROLA
5.1.1 P1, P2, P3, P4, P5, P6, and P8—Logic Analyzer Connectors
The logic analyzer connectors are 38-pin, receptacle MICTOR connectors manufactured by
AMP. Each connector connects to a dedicated adaptor for the HP16500 Series logic
analyzers, which interconnect to two 16-bit pods. Since all the signals on these connectors
are also on the motherboard connectors and expansion connectors, they are also described
in the
MPC8xxFADS User’s Manual
.
Table 5-1. P1 Interconnect Signals
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
1—— 2——
3 GND GND 4 — —
5TS
TS 6TATA
7TSTS 8TATA
9 F_CS F_CS 10 VFLS0 VFLS0
11 BCSRCS BCSRCS 12 VFLS1 VFLS1
13 DRMCS1
DRMCS1 14 AT0 AT0
15 DRMCS2 DRMCS2 16 AT1 AT1
17 SDRMCS
SDRMCS 18 AT2 AT2
19 CS5 CS5 20 AT3 AT3
21 CS6
CS6 22 VF0 VF0
23 CS7 CS7 24 VF1 VF1
25 — — 26 VF2 VF2
27 R_W
R_W 28 WAIT_B WAIT_B
29 REG_A REG_A 30 RESETA RESETA
31 TSIZE1 TSIZE1 32 POE_A
POE_A
33 BURST BURST 34 MODCK1 MODCK1
35 TEA TEA 36 MODCK2 MODCK2
37 SPKROUT SPKROUT
(KR/IRQ4
)
38 EXTCLK EXTCLK
NOTE: — = Not Connected.
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Signal Descriptions
MOTOROLA
MPC821FADS-DB USER’S MANUAL
5-3
Table 5-2. P2 Interconnect Signals
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
1—— 2——
3 GND GND 4 — —
5 — — 6 BS0A
BS0A
7 ALE_A ALE_A 8 BS0A BS0A
9 CE1A CE1A 10 BS1A BS1A
11 CE2A CE2A 12 BS2A BS2A
13 BWAITA BWAITA 14 BS3A BS3A
15 BB BB 16 WE0 WE0
17 BR BR 18 WE1 WE1
19 BWP BWP 20 WE2 WE2
21 BCD2 BCD2 22 WE3 WE3
23 BCD1 BCD1 24 DRM_W DRM_W
25 BG BG 26 EDOOE EDOOE
27 BI BI 28 GPL2 GPL2
29 BRDY BRDY 30 GPL3 GPL3
31 BADDR28 BADDR28 32 GPL4A GPL4A
33 BADDR29 BADDR29 34 GPL4B GPL4B
35 BADDR30 BADDR30 36 GPL5A GPL5A
37 AS AS 38 GPL5B GPL5B
NOTE: — = Not Connected.
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O
N
D
U
C
T
O
R
,
I
N
C
.
Signal Descriptions
5-4
MPC821FADS-DB USER’S MANUAL
MOTOROLA
Table 5-3. P3 Interconnect Signals
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
1—— 2——
3 GND GND 4 — —
5 TEA
TEA 6——
7 A0 A0 8 A16 A16
9 A1 A1 10 A17 A17
11 A2 A2 12 A18 A18
13 A3 A3 14 A19 A19
15 A4 A4 16 A20 A20
17 A5 A5 18 A21 A21
19 A6 A6 20 A22 A22
21 A7 A7 22 A23 A23
23 A8 A8 24 A24 A24
25 A9 A9 26 A25 A25
27 A10 A10 28 A26 A26
29 A11 A11 30 A27 A27
31 A12 A12 32 A28 A28
33 A13 A13 34 A29 A29
35 A14 A14 36 A30 A30
37 A15 A15 38 A31 A31
NOTE: — = Not Connected.
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
A
R
C
H
I
V
E
D
B
Y
F
R
E
E
S
C
A
L
E SE
M
I
C
O
N
D
U
C
T
O
R
,
I
N
C
.
Signal Descriptions
MOTOROLA
MPC821FADS-DB USER’S MANUAL
5-5
Table 5-4. P4 Interconnect Signals
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
1—— 2——
3 GND GND 4 — —
5 — — 6 LD1 PD8
7 PA0 PA0 8 LD8 PD15
9 PA1 PA1 10 LD7 PD14
11 PA2 PA2 12 LD6 PD13
13 PA3 PA3 14 LD5 PD12
15 PA4 PA4 16 LD4 PD11
17 PA5 PA5 18 LD3 PD10
19 PA6 PA6 20 LD2 PD9
21 PA7 PA7 22 LD1 PD8
23 PA8 PA8 24 LD0 PD7
25 PA9 PA9 26 LOE PD6
27 PA10 PA10 28 VSYNC PD5
29 PA11 PA11 30 HSYNC PD4
31 IRDTXD IRDTXD 32 SHIFT_C PD3
33 IRDRXD IRDRXD 34 SPARE1 SPARE1
35 ETHTX ETHTX 36 SPARE2 SPARE2
37 ETHRXS ETHRXS 38 SPARE3 SPARE3
NOTE: — = Not Connected.
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
A
R
C
H
I
V
E
D
B
Y
F
R
E
E
S
C
A
L
E SE
M
I
C
O
N
D
U
C
T
O
R
,
I
N
C
.
Signal Descriptions
5-6
MPC821FADS-DB USER’S MANUAL
MOTOROLA
Table 5-5. P5 Interconnect Signals
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
PIN MOTHER
BOARD
SIGNAL
DAUGHTER
BOARD
SIGNAL
1—— 2——
3 GND GND 4 — —
5 IRQ7
IRQ7 6——
7 UUFEN UUFEN 8 DSDI DSDI
9 USBVCC0 — 10 DSCK DSCK
11 VDOEXTCK — 12 DSDO DSDO
13 USBSPD — 14 TMS TMS
15 VDORST
— 16 TRST TRST
17 BVS1 BVS1 18 NMI NMI
19 BVS2 BVS2 20 IRQ1 IRQ1
21 BBVD1 BBVD1 22 IRQ2 IRQ2
23 BBVD2 BBVD2 24 IRQ3 IRQ3
25 RSTCNF RSTCNF 26 FRZ FRZ
27 TEXP TEXP 28 BINPAK BINPAK
29 HRESET HRESET 30 DP0 DP0
31 SRESET SRESET 32 DP1 DP1
33 PORST
PORST 34 DP2 DP2
35 R_PORI R_PORI 36 DP3 DP3
37 IRQ7
IRQ7 38 — V3.3
NOTE: — = Not Connected.
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
A
R
C
H
I
V
E
D
B
Y
F
R
E
E
S
C
A
L
E SE
M
I
C
O
N
D
U
C
T
O
R
,
I
N
C
.
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