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CT-CCV6X Intel Atom D2000/N2000 COM Express Type 6 Module

３５

4.20 Watchdog Timer

4.20.1 Board Design

The WDT (Watchdog Timer) is implemented by using TCO function in NM10.

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) //0xFED1C000+0x3410

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

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 65 66

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