Sony AR-B1570 manual Watchdog Timer, Watchdog Block Diagram, Disk

AR-B1570 User’s Guide

The files list and descriptions are as follow:

		Disk 1
	README.TXT	391 09-22-00 11:17 README.TXT
Files	GEODEW~1	<DIR> 09-22-00 10:53 Geode win9x
	WINCED~1	<DIR> 09-22-00 10:53 WinCE driver
	1. GEODE win9x
	Includes auto-execution program that will setup/install Geode Media drivers in Windows 9X
Descriptions	environment.
	2. WinCE driver
	Includes the GxM drivers needed in Win CE environment.
		Disk 2
	NT4~1 0DR	<DIR> 09-22-00 10:53 NT4.0 driver
Files	LINUXD~1	<DIR> 09-22-00 10:53 Linux driver
	WIN200~1	<DIR> 09-22-00 10:53 Win2000 driver
	README.TXT	1,611 04-23-99 11:48 README.TXT
	1. NT4.0 driver
	Includes the GxM drivers needed in NT4.0 environment.
Descriptions	2. Linux driver
	Includes the GxM drivers needed in Linux environment.
	3. Win2000 driver
	Includes the GxM drivers needed in Win2000 environment.
		Disk 3
Files	8139SW.EXE
	An auto extract file that includes:
Description	1. Device drivers of RTL8139A for various operating systems

2.LAN Configuration EEPROM programmer

3.Diagnostic and modification program for RTL8139

4.3WATCHDOG TIMER

This section describes the use of Watchdog Timer, including disable, enable, and trigger. AR-B1570 is equipped with a programmable time-out period watchdog timer that occupies I/O port 214H. Users can use simple program to enable the watchdog timer. Once you enable the watchdog timer, the program should trigger it every time before it times out. Watchdog Timer will generate a response (system or IRQ) due to system fails to trigger or disable watchdog timer before preset timer, times out.

Enable(D7)

Time Factor

(D0-D5)

Write and

Trigger

Watchdog

Register

Time Base

Counter and

Compartor

RESET

Watchdog Block Diagram

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