C&T Solution CT-CIB61, User Manual, Page: 37 / 76

CT-CIB61 Intel® 3rd Generation Core™ Processor i7/i5/i3 COM Express Type 6 Module
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4.16 Watchdog Timer
Board Design 4.16.1
The WDT (Watchdog Timer) is implemented by using Fintek F81801.
Register Address
WDT Base 0xA00
PSUEDO CODE 4.16.2
4.16.2.1 Set WDT Time Unit (Second Unit)
Step1: ByteData = ReadIOByte(0xA05) //Read current setting
Step2: ByteData = ByteData & 0xF7 //Set time unit to “second”
Step3: WriteIOByte(0xA05, ByteData) //Write back
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4.16.2.2 Set WDT Time Value
Step1: WriteIOByte(0xA06, Time) //Set watch dog time value
4.16.2.3 Enable WDT
Step1: ByteData = ReadIOByte(0xA05) //Read current setting
Step2: ByteData = ByteData | 0x20 //Enable WDT
Step3: WriteIOByte(0xA05, ByteData) //Write back
Enable TCO Timer Reboot Function
Set Initial Value into Timer Register
Reload Timer Value into Register
Start to Count