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Appendix A  Programming the Watchdog Timer ........ 19

A.1

Programming the watchdog timer ............................... 2 0

Appendix B  System Assignments .............................. 23

B.1

System I/O ports ............................................................ 2 4

B.2

DMA channel assignments ........................................... 2 5

B.3

Interrupt assignments ................................................... 2 6

B.4

1st MB memory map ..................................................... 2 7

Appendix C  LVDS Connection ................................... 29

C.1

LVDS Introduction ......................................................... 3 0

C.2

LVDS Pin assingments .................................................. 3 1

Содержание SOM-4450 ETX

Страница 1: ...SOM 4450 ETX Module NS Geode 586 Level SOM ETX CPU Module with SVGA LCD LVDS LAN SSD Interface User s Manual...

Страница 2: ...Ltd AMD is a trademark of Advanced Micro Devices Inc Award is a trademark ofAward Software International Inc Cyrix is a trademark of Cyrix Corporation IBM PC AT PS 2 and VGAare trademarks of Internati...

Страница 3: ...or utility drivers and manual in PDF format If any of these items are missing or damaged contact your distributor or sales representative immediately Version History June 2002 SOM 4450 User s Manual 2...

Страница 4: ...SD Support 5 1 2 8 Mechanical and environmental 5 1 3 Board dimensions 6 Chapter 2 Connector Assignments and Descriptions 9 2 1 Connector Locations 10 2 2 Pin Assignments for X1 X2 X3 X4 connectors 11...

Страница 5: ...amming the watchdog timer 20 Appendix B System Assignments 23 B 1 System I O ports 24 B 2 DMA channel assignments 25 B 3 Interrupt assignments 26 B 4 1st MB memory map 27 Appendix C LVDS Connection 29...

Страница 6: ...OM 4450 Top view 7 Figure 3 1 Contents of the SOM 4450 Series utility disk 14 Figure 3 2 BIOS VGA setup screen 15 Tables Table B 1 System I O ports 24 Table B 2 DMA channel assignments 25 Table B 3 In...

Страница 7: ...C H A P T E R 1 General Information This chapter gives background informa tion on the SOM 4450 CPU System On Module Sections include Introduction Specifications Board Dimensions...

Страница 8: ...chipset It supports all functions of an AT compatible industrial computer There is one SODIMM socket that supports 16 MB to 128 MB synchronous DRAM The small size 95 mm x 114 mm and use of four high c...

Страница 9: ...aces COM1 RS 232 COM2 RS 232 TTL Output Parallel port One parallel port interface supports SPP EPP ECP parallel mode Infrared port One 115 Kbps infrared port IrDA 1 0 compliant Keyboard mouse connecto...

Страница 10: ...Differential Signal interface SOM 4450FL only Chipset TISN75LVDS84 Performance 18 low voltage TTL data channels plus clock in and 3 low voltage differential data channels plus clock out 3 3 V and 250...

Страница 11: ...expandable by chipDisk and external HDD Bootable CFC HDD 16 MB DOC2000 on board optional 1 2 8 Mechanical and environmental Dimensions LxW 95mmx114mm 3xx xxxx Weight 74 g Operating temperature 0 60 C...

Страница 12: ...6 SOM 4450 User s Manual 1 3 Board dimensions Figure 1 1 SOM 4450 dimensions...

Страница 13: ...Chapter 1 General Information 7 Figure 1 2 SOM 4450 Top view...

Страница 14: ...8 SOM 4450 User s Manual...

Страница 15: ...and Descriptions This chapter tells how to set up the SOM 4450 hardware It includes instructions on connecting peripherals switches and indicators Make sure you read all the safety precautions before...

Страница 16: ...2 1 Connector Locations The board has a number of connectors that allow you to configure your system to suit your application The tables below shows the function of each of the board s connec tors SOM...

Страница 17: ...working on it Do not make connections while the power is on because sensitive electronic components can be damaged by a sudden rush of power Caution Always ground yourself to remove any static charge...

Страница 18: ...12 SOM 4450 User s Manual...

Страница 19: ...s the software configu ration information It shows you how to configure the SOM 4450 card to match your application requirements Award system BIOS is covered in Chapter 4 Sections include LCD display...

Страница 20: ...display Directories and files on the disk are as follows AWDFLASH EXE This program allows you to update the BIOS Flash ROM 4450110 BIN This binary file contains the system BIOS 3 3 VGA display softwa...

Страница 21: ...lowing 3 At the prompt type in the BIN file which supports your display When you are sure that you have entered the file name correctly press Enter The screen will ask Do you want to save If you wish...

Страница 22: ...GND 3 GND 2 CLK 35 SHFCLK 3 GND 4 GND 4 R0 27 PD12 5 R1 28 PD13 6 R2 29 PD14 7 GND 8 GND 8 R3 30 PD15 9 R4 31 PD16 10 R5 32 PD17 11 GND 33 GND 12 G0 19 PD6 13 G1 20 PD7 14 G2 21 PD8 15 GND 33 GND 16...

Страница 23: ...D 3 GND 2 NCLK 35 SHFCLK 3 NC NC 4 NC NC 5 GND 4 GND 6 R0 27 PD12 7 R1 28 PD13 8 R2 29 PD14 9 R3 30 PD15 10 R4 31 PD16 11 R5 32 PD17 12 GND 8 GND 13 G0 19 PD6 14 G1 20 PD7 15 G2 21 PD8 16 G3 22 PD9 17...

Страница 24: ...18 SOM 4450 User s Manual...

Страница 25: ...4450 is equipped with a watchdog timer that resets the CPU or generates an interrupt if processing comes to a standstill for any reason This feature ensures system reliability in industrial standalon...

Страница 26: ...watchdog timer you must write a program which writes I O port address 443 hex The output data is a value of time interval The value range is from 01 hex to 3E hex and the related time interval is 1 se...

Страница 27: ...example shows how you might program the watchdog timerinBASIC 10 REM Watchdog timer example program 20 OUT H443 data REM Start and restart the watchdog 30 GOSUB 1000 REM Your application task 1 40 OUT...

Страница 28: ...22 SOM 4450 User s Manual...

Страница 29: ...System Assignments System I O ports DMA channel assignments Interrupt assignments 1st MB memory map A P P E N D I X B...

Страница 30: ...ler 2 slave 0C0 0DF DMA controller master 0F0 Clear math co processor 0F1 Reset math co processor 0F8 0FF Math co processor 170 178 2nd fixed disk for CompactFlash 1F0 1F8 1st fixed disk 200 207 Game...

Страница 31: ...ts Table B 2 DMA channel assignments Channel Function 0 Available 1 Available 2 Floppy disk 8 bit transfer 3 Parallel 4 Cascade for DMA controller 1 5 Available 6 Available 7 Available Parallel port D...

Страница 32: ...cascade IRQ 3 Serial communication port 2 IRQ 4 Serial communication port 1 IRQ 5 Available IRQ 6 Diskette controller FDC IRQ 7 Parallel port 1 print port IRQ 8 Real time clock IRQ 9 Reserve IRQ 10 Av...

Страница 33: ...map Addr range Hex Device F000h FFFFh System ROM E000h EFFFh Unused CC00h DFFFh available C800h CBFFh Ethernet ROM C000h C7FFh VGA BIOS B800h BFFFh CGA EGA VGA text B000h B7FFh Reserved for graphic m...

Страница 34: ...28 SOM 4450 User s Manual...

Страница 35: ...LVDS Connection This appendix contains information concerning the LVDS installation and pin assignments APPENDIX C...

Страница 36: ...is especially important in space critical applications This is also why LVDS has already been widely used in Notebook computer panel connections All Digital Benefits No matter which digital standard a...

Страница 37: ...L 2 t u o x T t s r i f 6 O D D C L k l c x T t s r i f 7 O D D C L k l c x T t s r i f 8 O D D C L d e s u t o n 9 O D D C L d e s u t o n 0 1 O D D C L d e s u t o n 1 1 O D D C L d e s u t o n 2 1...

Страница 38: ...O D D C L 9 3 C C V 0 4 C C V 1 4 2 O I G T L 2 4 0 O I G T L 3 4 1 O I G T L 4 4 N O L B 5 4 N O S A I B 6 4 N O G I D 7 4 P M O C 8 4 Y 9 4 C N Y S 0 5 C 1 5 Y P L F T P L 2 5 C N 3 5 C C V 4 5 D N...

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