Eurotech CPU-1233 Owner's manual

Brand: Eurotech

Model: CPU-1233

Type: Owner's manual

Rev. 2.1 - October 2008 - ETH_CPU-1233_UM2.1

DIGITAL TECHNOLOGIES FOR A BETTER WORLD

www.eurotech.com

CPU-1233

Geode GX466 333MHz Single Board Compute

USER’S MANUAL

CPU-1233 – User’s Manual

Note: The information contained within this document is subject to change without notice and should not be construed as a commitment by any

EUROTECH company. While reasonable precautions have been taken, EUROTECH assumes no responsibility for any error that may appear in

this document.

All trademarks or registered trademarks remain the property of EUROTECH.

Disclaimer

The informatio n in this man ual h as bee n carefully c hecked an d is be lieved to be a ccurate. Eurot ech assum es no

responsibility for any infringements of patents or other rights of third parties, which may result from its use.

Eurotech ass umes no responsibi lity for any inaccuracies that may b e c ontained i n th is doc ument. Eurotech mak es n o

commitment to update or keep current the information contained in this manual.

Eurotech reserves the right to make improvements to this document and/or product at any time and without notice.

Warranty

This product i s sup plied with a lim ited warranty. T he pr oduct warranty covers fail ure of a ny E urotech ma nufactured

product caused by manufacturing defects. Eurotech will make all reasonable effort to repair the product or replace it with

an equivalent alternative. E urotech r eserves the r ight to r eplace t he r eturned pr oduct with an alternative var iant or an

equivalent fit, form and functional product. Delivery charges will apply to all returned products.

Trademarks

All trademarks, both marked and not marked, appearing in this document are the property of their respective owners.

WEEE

The information below is issu ed in com pliance with the reg ulations as set out in the 20 02/96/CE directive, subsequently

superseded by 2003/108/CE. It refers electrical and electronic equipment and the waste management of such products.

When disposing of a device, including all of its components, subassemblies and materials that are an integral part of the

product, you should consider the WEEE directive.

This s ymbol has b een attac hed to th e e quipment or, if this h as n ot b een poss ible, on th e packaging,

instruction liter ature a nd/or th e gu arantee s heet. B y usi ng this s ymbol, it states that th e dev ice h as been

marketed after August 13th 2 005, and implies that you must separate all of its comp onents when possible,

and dispose of them in accordance with local waste disposal legislations.

¾ Because of the substances present in the e quipment, improper use or di sposal of the refu se can caus e damage to

human health and to the environment.

¾ With reference to WEEE, it i s compuls ory not disp ose of the equi pment with n ormal urban refuse, arran gements

should be instigated for separate collection and disposal.

¾ Contact your local waste collection body for more detailed recycling information.

¾ In case of illicit disposal, sanctions will be levied on transgressors.

RoHS

This device, in cluding a ll it c omponents, s ubassemblies and the c onsumable mat erials that are a n integral p art of t he

product, has b een m anufactured i n comp liance with the E uropean dir ective 20 02/95/EC kno wn as th e RoHS directive

(Restrictions on the use of certain H azardous Substa nces). This directiv e targets the reduction of ce rtain haz ardous

substances previously used in electrical and electronic equipment (EEE).

Eurotech S.p.A.

A member of the Eurotech Group

Via Fratelli Solari, 3/a

33020 - AMARO (UD)

ITALY

CPU-1233 – User’s Manual

Conventions used within this Manual

The following conventions are used throughout this manual.

The “Mode” of the register:

Symbol / Text Definition

RW Readable and Writable register

RO Read only register

W Meaning of the register when written

R Meaning of the register when read

Hexadecimal numbering:

Hexadecimal numbers are indicated with an “h” suffix (for example: 11Ch)

Symbols and Text used in Pin-out tables:

Symbol / Text Definition

◄ Input

► Output

◄► Bi-Directional

▬ Passive

Module specific Dependent on module installed

NC Not Connected

Reserved Use reserved to Eurotech, must remain unconnected

# Active low signal

Warnings and Important Notices:

Within this manual you will find th e following tables, please ensure that you read and understand these as

they are intended to highlight potential risks or precautions that should be taken.

Warnings:

Information to alert you to potential hazards:

Potential personal injury or damage to a system, device, or program.

Information and Notes:

Indicates important features or instructions that should be observed

Technical Assistance

If you have a ny techni cal questions o r if you ca nnot isolate a p roblem with yo ur device, pl ease e-mail t he

Eurotech Technical Support Team: email: techsupp@eurotech.com

Before returning any E urotech product, for a ny re ason, you m ust e-m ail the E urotech Technical Supp ort

Team on the above email address, giving the following information; you will then b e sent an RMA nu mber

(Returned Material Authorization) for the return of the material:

• Model number (see Figure 1)

•

Serial number (see Figure 1)

• Detaile

d fault description

• Comp

any Details

• Conta ct details

CPU-1233 – User’s Manual

Transportation

When transporting the m odule for any reason it sh ould be packed using anti-static material and placed in a

sturdy box with enough packing material to adequately cushion it.

Warning:

Any product returned to Eurotech that is damaged due to i nappropriate packaging will

not be covered by the warranty!

Board labelling

On the external side of the ISA Bus connector, you will find several labels displaying the following:

• Batch Number

• Serial Number

• Mode l Number

• Hard ware Revision

Figure 1. Board label locations

Serial Number

Model Number Hardware Revision

Batch Number

CPU-1233 – User’s Manual

Table of Contents

Conventions used within this Manual ...................................................................................................... 3

The “Mode” of the register: ...........................................................................................................................3

Hexadecimal numbering: ..............................................................................................................................3

Symbols and Text used in Pin-out tables:.....................................................................................................3

Warnings and Important Notices:..................................................................................................................3

Technical Assistance ............................................................................................................................... 3

Transportation.......................................................................................................................................... 4

Board labelling ......................................................................................................................................... 4

Table of Contents .................................................................................................................................. 5

Chapter 1 Product Overview ............................................................................................................ 7

Product Definition .................................................................................................................................... 8

Electrical and Environmental Specifications............................................................................................ 9

Operating Characteristics .............................................................................................................................9

Absolute Maximum Ratings..........................................................................................................................9

MTBF............................................................................................................................................................9

Chapter 2 Jumper Description ....................................................................................................... 11

Chapter 3 Connector Description .................................................................................................. 13

Connector Layout .................................................................................................................................. 13

J1 and J2: ISA Bus ................................................................................................................................ 14

Connecting PC/104 & PC/104-Plus devices together on a stack................................................................16

J3: Multifunction port.............................................................................................................................. 17

J4: Parallel port...................................................................................................................................... 18

J5 and J6: Serial ports 1 and 2.............................................................................................................. 19

J7: USB ports 0 and 1............................................................................................................................ 20

J8: AC97 Audio interface....................................................................................................................... 21

J9: IDE interface .................................................................................................................................... 22

J10: VGA video output........................................................................................................................... 23

J11: Auxiliary power............................................................................................................................... 24

J12: IDE LED ......................................................................................................................................... 25

J14: PS/2 mouse ................................................................................................................................... 25

J18: Ethernet ......................................................................................................................................... 26

J19: LCD/TFT flat panel ........................................................................................................................ 27

J21: USB ports 2 and 3.......................................................................................................................... 28

Chapter 4 The DOS Setup Program ............................................................................................... 29

Main menu..................................................................................................................................................29

Sub menu ...................................................................................................................................................29

Navigation / Input options ...........................................................................................................................29

Navigation Keys:.................................................................................................................................... 30

General: ................................................................................................................................................. 31

Devices: ................................................................................................................................................. 32

Communications: ................................................................................................................................... 33

ATAPI Units: .......................................................................................................................................... 34

CPU-1233 – User’s Manual

Advanced:.............................................................................................................................................. 35

PCI Bus.................................................................................................................................................. 36

ISA Bus:................................................................................................................................................. 37

Flat Panel:.............................................................................................................................................. 38

Error Handling:....................................................................................................................................... 39

Quit: ....................................................................................................................................................... 40

Chapter 5 BTOOL and Solid State Disk......................................................................................... 41

The BTOOL program............................................................................................................................. 41

OPTIONS:...................................................................................................................................................42

The Integrated Solid State Disk............................................................................................................. 43

Chapter 6 Virtual Peripheral ........................................................................................................... 45

How “Virtual Peripheral” works .............................................................................................................. 46

Choosing the Virtual Peripheral connection type .................................................................................. 46

Serial Connection:.......................................................................................................................................46

Parallel Connection:....................................................................................................................................47

The VP2000.EXE program .................................................................................................................... 48

How to perform a Virtual Peripheral session ......................................................................................... 49

To perform a Virtual Peripheral session you need:.....................................................................................49

Follow these steps to perform a Virtual Peripheral session: .......................................................................49

Chapter 7 Watchdog Timer............................................................................................................. 51

Watchdog modes................................................................................................................................... 51

BIOS INT 52h - functions 0Ch, 0Dh, 0Eh....................................................................................................51

Super I/O registers programming................................................................................................................52

Appendix .............................................................................................................................................. 53

A.1. Mechanical Dimensions.............................................................................................................. 53

A.2. Manual Revision History ............................................................................................................. 54

CPU-1233 – User’s Manual

Chapter 1 Product Overview

In the following paragraphs, you will find a brief description of the CPU-1233 characteristics.

For a complete list of our products please visit our website: http://www.eurotech.com/

CPU-1233 – User’s Manual

Product Definition

The CPU-1233 i s a PC/1 04 m odule t hat featu res the AMD™ Geode™ GX466 333MHz Pentium® MMX

class processor and is Windows CE®, Windows XPE®, and Linux® compatible.

General Features:

Architecture:

PC/AT Architecture

Dimensions:

Compliant with the PC/104 standard

Processor:

AMD™ Geode™ GX466 333MHz

Memory:

128MB DDR, soldered

Solid State Disk:

Connector for a secured Disk-On-Module

BIOS Flash:

1MB 8bit +5V Flash EPROM

Interfaces:

• IDE Controller, 66MB/second UDMA ATA-5

• Integrated display controller:

o TFT or VGA Interface

o Up to 1600 x 1200 x 24 BPP at 85Hz

• 4 USB 2.0 ports

• Audio: AC97 v2.3 compliant

• Ethernet (Realtek RL8139D):

o 10/100 Mbps with N-way Auto-negotiation

• 2 Serial ports:

o 1 RS232

o 1 software configurable RS232/422/485

• 1 Parallel port

• AT Keyboard input

• PS/2 Mouse input

BUS:

ISA PC/104 compliant

Power Supply:

Single +5V DC +/- 5%

RoHS:

Fully RoHS (2002/95/CE) Compliant

Supported Operating Systems:

•

Wind ows CE®

•

Windows XPE®

•

Linux®

CPU-1233 – User’s Manual

Electrical and Environmental Specifications

Operating Characteristics

Electrical Operating Characteristics

Power supply Nominal 5.00V

Minimum 4.75V

Maximum 5.25V

Power consumption Typical <6 W

Backup Battery Characteristics

There is no configuration data saved by the BIOS for the CMOS Re al Time Clo ck. The refore, the CPU

module does not need a battery exce pt for appli cations t hat do not need to retain d ate and time d ata at

power-off.

Battery Voltage Nominal 3.6V

Minimum 3.0V

Maximum 3.9V

Note:

Setup data is stored in the BIOS Flash EPROM; it is therefore impossible to lose the

setup data due to a lack of power.

Operating Temperature Range

For correct operation of the module, the ambient air temperature must remain within the following range:

Standard Minimum +0 °C

Maximum +60 °C

Extended Minimum -40 °C

Maximum +85 °C

Absolute Maximum Ratings

Supply Voltage Minimum 0.00V

Maximum 5.25V

Storage Temperature Range Minimum -40 °C

Maximum +85 °C

Non-Condensing Relative Humidity <95% at 40°C

Warning:

Stressing the module beyond the “Absolute Maximum Ratings” may cause permanent

damage. These are stress ratings only. Operation beyond the “Operating Conditions” is

not recommended. Extended exposure beyond t he “Operating Co nditions” may affect

the devices reliability

MTBF

Hours 615.000

Standard Mil std. 217 ground benign

Temperature 25.0 °C

(This page is intentionally left blank.)

CPU-1233 – User’s Manual

Chapter 2 Jumper Description

Jumpers are shown as JP followed by its designated number.

JP2

JP1

JP3

Figure 2. Jumper locations

Jumper Type Function Options Default

JP1 2 pin Ethernet IRQ selection Open: Ethernet use PCI_INTB#

Closed: Ethernet use PCI_INTD#

Open

JP2 3 pin VGA or Flat Panel selection 1-2: Use VGA

2-3: Use Flat Panel

Please note:

The video output device can be VGA or LCD.

VGA and LCD cannot be used simultaneously.

1-2

JP3 2 pin Invalid Setup Open: Module starts with saved parameters

Closed: Module starts with default settings

Open

Table 1. Jumper Functions

(This page is intentionally left blank.)

CPU-1233 – User’s Manual

Chapter 3 Connector Description

Connector Layout

Connectors are shown as J followed by its designated number. Pin 1 is marked with a red pad.

J12

J10

Auxiliary

power

PS/2 Mouse

ISA BUS

USB

2 & 3

Ethernet

Serial 2

Parallel

MultifunctionSerial 1

LCD/TFT

Flat Panel

IDE/DOM

IDE LED

AC97

VGA

USB 0 & 1

J11

J14

J21

J16

J18

J6 J20

J4 J3

J19

J1, J2

Figure 3. Connector locations

Connector # Function Qty of pins Format Pitch (mm)

J1 PC104 Base 64 PC104: 32x2 2.54

J2 PC104 Extended 40 PC104: 20x2 2.54

J3 Multifunction (Keyboard, Ext Batt, Reset…) 120 PC104PLUS: 30x4 2.54

J4 Parallel Port 26 Pin strip 13x2 2.54

J5 Serial Port 1 10 Pin strip 5x2 2.54

J6 Serial Port 2 10 Pin strip 5x2 2.54

J7 USB port 0 and 1 8 Pin strip 4x2 2.00

J8 AC97 Audio Interface 18 Pin strip 9x2 2.00

J9 IDE hard disk 44 Pin strip 22x2 2.00

J10 VGA Video Output 10 Pin strip 5x2 2.54

J11 Auxiliary power supply 12 Pin strip 6x2 2.54

J12 IDE Led 2 Pin strip 2x1 2.00

J14 PS/2 Mouse 4 Pin strip 4x1 2.00

J16 Reserved 10 Pin strip 10x1 2.00

J18 Ethernet 10 Pin strip 5x2 2.54

J19 LCD/TFT Flat Panel 40 Hirose DF13 20x2 1.25

J20 Reserved 10 Pin strip 10x1 2.00

J21 USB port 2 and USB Port 3 8 SIL 8 2.00

Table 2. Connector Functions

CPU-1233 – User’s Manual

J1 and J2: ISA Bus

Connectors J1 and J2 carry the signals for the ISA Bus.

These signals match the definitions of the IEEE P996 standard.

Figure 4. ISA BUS layout

According to the PC/104 specifications, these connec tors include KEY pins; these are filled holes in the

upper side and missing pins in the lower side of the bus, to avoid the wrong insertion in/of another module.

For further info about ISA bus please refer to Eurotech website in the Industry Standards section.

Pin # Use Signal Pin # Use Signal

1 ISA Bus IOCHK# 33 ISA Bus A14

2 ISA Bus Ground 34 ISA Bus DACK1#

3 ISA Bus D7 35 ISA Bus A13

4 ISA Bus RSTDRV 36 ISA Bus DRQ1

5 ISA Bus D6 37 ISA Bus A12

6 ISA Bus +5 Volts 38 ISA Bus REFRESH#

7 ISA Bus D5 39 ISA Bus A11

8 ISA Bus IRQ 9 40 ISA Bus ISACLK

9 ISA Bus D4 41 ISA Bus A10

10 ISA Bus -5 Volts 42 ISA Bus IRQ 7

11 ISA Bus D3 43 ISA Bus A9

12 ISA Bus DRQ2 44 ISA Bus IRQ 6

13 ISA Bus D2 45 ISA Bus A8

14 ISA Bus -12 Volts 46 ISA Bus IRQ 5

15 ISA Bus D1 47 ISA Bus A7

16 ISA Bus ZEROWS# 48 ISA Bus IRQ 4

17 ISA Bus D0 49 ISA Bus A6

18 ISA Bus +12 Volts 50 ISA Bus IRQ 3

19 ISA Bus IOCHRDY 51 ISA Bus A5

20 Not Connected Key 52 ISA Bus DACK2#

21 ISA Bus AEN 53 ISA Bus A4

22 ISA Bus SMEMW# 54 ISA Bus TC

23 ISA Bus A19 55 ISA Bus A3

24 ISA Bus SMEMR# 56 ISA Bus BALE

25 ISA Bus A18 57 ISA Bus A2

26 ISA Bus IOW# 58 ISA Bus +5 Volts –1

27 ISA Bus A17 59 ISA Bus A1

28 ISA Bus IOR# 60 ISA Bus OSC

29 ISA Bus A16 61 ISA Bus A0

30 ISA Bus DACK3# 62 ISA Bus Ground 1

31 ISA Bus A15 63 ISA Bus Ground 3

32 ISA Bus DRQ3 64 ISA Bus Ground 2

Table 3. J1 pinout

CPU-1233 – User’s Manual

Pin # Use Signal Pin # Use Signal

1 ISA Bus Ground 0 21 ISA Bus MEMW#

2 ISA Bus Ground 1 22 ISA Bus DACK5#

3 ISA Bus SBHE# 23 ISA Bus SD8

4 ISA Bus ISA_MEMCS16# 24 ISA Bus DRQ5

5 ISA Bus LA23 25 ISA Bus SD9

6 ISA Bus IOC16# 26 ISA Bus DACK6#

7 ISA Bus LA22 27 ISA Bus SD10

8 ISA Bus IRQ10 28 ISA Bus DRQ6

9 ISA Bus LA21 29 ISA Bus SD11

10 ISA Bus IRQ11 30 ISA Bus DACK7#

11 ISA Bus LA20 31 ISA Bus SD12

12 ISA Bus IRQ12 32 ISA Bus DRQ7

13 ISA Bus LS19 33 ISA Bus SD13

14 ISA Bus IRQ15 34 ISA Bus +5 Volts

15 ISA Bus LA18 35 ISA Bus SD14

16 ISA Bus IRQ14 36 ISA Bus MASTER#

17 ISA Bus LA17 37 ISA Bus SD15

18 ISA Bus DACK0# 38 ISA Bus Ground 2

19 ISA Bus MEMR# 39 ISA Bus Not Connected

20 ISA Bus DRQ0 40 ISA Bus Ground 3

Table 4. J2 pinout

Note:

For furth er i nformation regarding the ISA and PCI bus, pl ease visit the Eurotech

website (http://www.eurotech.com/

), referring to the section titled “Industry Standards.”

CPU-1233 – User’s Manual

Connecting PC/104 & PC/104-Plus devices together on a stack

The ISA bus connectors on the module are designed to allow the module to be connected with other PC/104

and/or PC/104Plus devices, we recommend the following procedure to ensure that stacked modules are not

damaged.

Warning:

Appropriate ESD (Electro Static Discharge) precautions should be used for the

following procedure.

1. Turn off the power to the PC/104 (or PC/104-Plus) system or stack.

2. Select and install standoffs as required to correctly position the module on the PC/104 stack.

3. Remove the module from its anti-static bag.

4. Check that keying pins in the bus connector are correctly positioned.

5. Check the stacking order; make sure an XT bus card will not be placed between two AT bus cards or it

will interrupt the AT bus signals.

6. Hold the mo dule by its edge s and o rient it so that the bus co nnector pin s line up with the matchi ng

connector on the stack.

7. Press the module evenly onto the PC/104 stack.

Figure 5 sho ws a typical module stack with tw o PC/104 modul

es, one PC/1 04 16-BIT m

odule, and o ne

PC/104 8-BIT module.

The maximum number of modules is 4 in addition to the Host Board.

If standa rd PC/104 peripheral m odules are used in a st ack th at inclu des a P C/104-Plus CPU mod ule a nd

PC/104-Plus peripherals, they must be the top module(s) because they will normally not include the PCI bus

(while PC/104-Plus module does).

0.6 in. (15mm) Spacers (4 plcs.)

Stackthrough

8-bit module

0.435 in. (11 mm)

0.6 in. (15 mm)

Stackthrough

16-bit module

Stackthrough

PC/104Plus module

Non-Stackthrough

PC/104Plus module

0.6 in. (15mm) Spacers (4 plcs.)

0.100 in. (2.54 mm)

0.062 in. (1.57 mm)

Figure 5. The Module Stack

Warning:

Do not force the module onto the stack! Wiggling the module or applying too much

pressure may damage it. If the module does not readily press into place, remove it,

check for bent pins or out-of-place keying pins, and try again.

CPU-1233 – User’s Manual

J3: Multifunction port

J3 includes the following:

• Speaker

• Keyboard

• External battery

• Re set pushbutton

• Watchdo g

Multifunction

Figure 6. J3 layout

Pin # Use Signal

1 Speaker Output

2 Speaker Vdd (+5V DC)

3 Reset Push Button

4 Watchdog Timeout latch

5 Keyboard Data

6 Keyboard Clock

7 Common GND Ground

8 Keyboard Vdd (+5V DC)

9 External battery Input

10 N.C. None

Table 5. J3 pinout

Keyboard:

An AT compatible keyboard can be connected to the module using pins 5, 6, 7, and 8.

System reset

Shorting pin 9 to ground will perform a hardware reset of the module. It is possible to use an external push-

button (normally open) to perform this operation. The reset signal is “de-bounced” on the board.

External Battery

Pin 9 allows users to connect an external backup battery. If connected the battery voltage must be between

3.0 and 3.9 V DC.

The battery is used wh en the module is po wered d own to prese rve the Data and Time in the Real -Time-

Clock.

Typical battery consumption is 7 uA.

Speaker

A transistor to supplies 0.1 watts of power to the Speaker output pins for an external speaker.

A transistor amplifier buffers the speaker signal. Use a small general purpose 2 or 3-inch permanent magnet

speaker with an 8-Ohm voi ce coil. The audio output is based on two signals: one comes from the output of

Timer 2, and the other come from I/O port 61h compliant with the AT Standard.

Note:

For further information, refer to the Technical Datasheet Td0020 that can be

downloaded from http://www.eurotech.com/

CPU-1233 – User’s Manual

J4: Parallel port

Parallel

Figure 7. J4 layout

Pin # Use Signal

1 Parallel port Strobe Data

2 Parallel port Auto feed

3 Parallel port Printer Data 0

4 Parallel port Printer error

5 Parallel port Printer Data 1

6 Parallel port Initialise printer

7 Parallel port Printer Data 2

8 Parallel port Select printer

9 Parallel port Printer Data 3

10 Parallel port Signal ground

11 Parallel port Printer Data 4

12 Parallel port Signal ground

13 Parallel port Printer Data 5

14 Parallel port Signal ground

15 Parallel port Printer Data 6

16 Parallel port Signal ground

17 Parallel port MSB Printer Data

18 Parallel port Signal ground

19 Parallel port Character accepted

20 Parallel port Signal ground

21 Parallel port Busy

22 Parallel port Signal ground

23 Parallel port Paper End

24 Parallel port Signal ground

25 Parallel port Ready To Receive

26 Parallel port Reserved

Table 6. J4 pinout

Note:

For further information, refer to the Technical Datasheet Td0020 that can be

downloaded from http://www.eurotech.com/

CPU-1233 – User’s Manual

J5 and J6: Serial ports 1 and 2

Available serial port modes:

Connector Port Name RS232 RS422 RS485

J5 COM 1

9 9 9

J6 COM 2

2 2

Serial 2

Serial 1

Figure 8. J5 layout

Pin Signal Use DB25 DB9

1 DCD Data Carrier Detect 8 1

2 DSR Data Set Ready 6 6

3 RX Receive Data 3 2

4 RTS Request To Send 4 7

5 TX Transmit data 2 3

6 CTS Clear To Send 5 8

7 DTR Data Terminal Ready 20 4

8 RI Ring Indicator 22 9

9,10 GND Signal Ground 7 5

Table 7. J5, J6 Serial Port Connectors in RS232 mode

RS422 RS485

Pin Signal Use In/out Signal Use In/out Pin

1 -TX Transmit data Out -TX / -RX Transmit/Receive data In / Out 1

2 Not connected Not connected 2

3 +TX Transmit Data Out +TX / +RX Transmit/Receive data In / Out 3

4 Not connected Not connected 4

5 -RX Receive Data In Not connected 5

6 Not connected Not connected 6

7 +RX Receive Data In Not connected 7

8 Not connected Not connected 8

9,10 Ground Signal ground -- Ground Signal ground 9,10

Table 8. J5 Serial Port Connector in RS422-RS485 modes

Note:

If the Serial port is used in RS485 mode, the bi-directional line must be controlled via

software, using the Data Terminal Ready (DTR) signal of the serial controller.

This signal is defined by bit 0 of the UART Modem Control Register (MCR) and the bi-

directional line is controlled as follows:

- Bit 0 of the MCR register = 0 means RS485 line receiving

- Bit 0 of the MCR register = 1 means RS485 line transmitting

The I/O address of the MCR is "Serial port Base address" +4H.

CPU-1233 – User’s Manual

J7: USB ports 0 and 1

USB 0 & 1

Figure 9. J7 layout

Pin Use Signal

1 USB Power enable

2 USB Over current

3 USB 0 USB0N differential line -

4 USB 1 USB1N differential line -

5 USB 0 USB0P differential line +

6 USB 1 USB1P differential line +

7 Ground signal GND

8 Ground signal GND

Table 9. J7 pinout

Note:

For further information, refer to the Technical Datasheet Td0001 that can be

downloaded from http://www.eurotech.com/

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Eurotech CPU-1233 Owner's manual

Eurotech CPU-1233 Owner's manual

Eurotech CPU-1233 Owner's manual

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