C&T Solution CT-CCV6X, User Manual

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CT-CCV6X Intel Atom D2000/N2000 COM Express Type 6 Module
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4.20 Watchdog Timer
4.20.1 Board Design
The WDT (Watchdog Timer) is implemented by using TCO function in NM10.
Register Address
TCO I/O Base (TCOBASE) 0x460
RCBA Memory Base (RCBA) 0xFED1C000
Notes:
1. TCO (Total Cost of Ownership)
2. RCBA (Root Complex Base Address)
4.20.2 PSUEDO CODE
Step1 Enable TCO Timer Reboot Function
Target: Clear RCBA+3410h Bit 5 to 0
Step1: DWordData = ReadMemoryDword(0xFED1F410) //0xF0x3410
Step2: DWordData = DWordData & 0xFFFFFFDF //Clear DWordData Bit
5 to 0
Step3: WriteMemoryDWord(0xFED1F410, DWordData) //Write back to memory
Note:
Enable TCO Timer Reboot Function
Set Initial Value into Timer Register
Reload Timer Value into Register
Start to Count