Advantech PCA-6289 Uživatelský manuál stáhnout pdf (Strana 57)

47 Appendix A

A.1.3 Watchdog Timer Programming Procedure

Power On or Reset the System

The initial value of WDT Control Register (D3~D0) is zero (0), when

power is on or the system has been reset. The following table indicates

the initial value of WDT (00000000b )

A.1.4 Clear the WDT

WDT counter interval cannot be longer than the preset time, otherwise,

WDT sends a reset signal to the system. The following is an example of

clearing the WDT program in Intel 8086 assembly language.

Table A.2: WDT Control Register Bit Definition

Table A.3: WDT Control Register Initial Value

Bit Value Mean

3 0 Disable Watchdog Timer

2,1,0 000 Select 64 second

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 67 68

Copyright Notice 2
1.0.2 Product warranty 4
1.0.3 Initial Inspection 5
1.0.4 Release Note 5
Important Safety Information 6
SAFETY INSTRUCTIONS 6
Contents 7
PCA-6289 User Manual x 10
General Information 11
1.1 Introduction 12
1.2 Features 12
1.3 Specifications 13
1.3.4 VGA interface 14
1.3.5 Ethernet LAN 14
1.3.6 Industrial features 14
1.4 Jumpers and Connectors 15
PCA-6289 User’s Manual 6 16
1.6 PCA-6289 Block Diagram 18
1.7 Safety Precautions 19
1.8 Jumper Settings 20
1.9 System Memory 21
1.11 Processor Installation 22
PCA-6289 User’s Manual 14 24
Award BIOS Setup 25
Chapter 2 Award BIOS Setup 26
2.4 Advanced BIOS Features 27
PCA-6289 User’s Manual 18 28
19 Chapter 2 29
2.4.16 APIC Mode 30
2.5.1 System BIOS Cacheable 30
2.6 Integrated Peripherals 31
PCA-6289 User’s Manual 22 32
2.6.9 Onboard Parallel Port 33
2.6.10 Parallel Port Mode 33
2.6.11 ECP Mode Use DMA 33
PCA-6289 User’s Manual 24 34
2.6.21 Wake up on LAN 1 35
2.6.22 Power On by Ring 35
2.7 PnP/PCI Configurations 36
2.8 PC Health Status 37
2.9 Load Fail-Safe Defaults 37
2.10 Load Optimized Defaults 37
2.12 Save & Exit Setup 38
2.13 Exit Without Saving 38
VGA Setup 39
Chapter 3 VGA Setup 40
3.2 Installing VGA Driver 41
Chipset Software 43
Installation Utility 43
PCA-6289 User’s Manual 38 48
LAN Configuration 49
Chapter 5 LAN Configuration 50
PCA-6289 User’s Manual 42 52
USB 1.1 Configuration 53
6.1 Installation 54
Programming the 55
Watchdog Timer 55
A.1.4 Clear the WDT 57
PCA-6289 User’s Manual 48 58
GPIO User's Guide 59
Digital I/O UESD Port 801 59
PCA-6289 User’s Manual 50 60
I/O Pin Assignments 61
Appendix B Pin Assignments 62
B.2 Daughterboard 63
• J3: SIO2 Connector 64
• J4: SIO1 Connector 64
• J6: AC’97 Connector 64
PCA-6289 User’s Manual 58 68

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