Jasper Lake EDS Vol1


ID 633935
Date 01/01/2021
Public Content

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Thermal Trip Signal (PCHHOT_N)

The PCH provides PCHHOT_​N signal to indicate that it has exceeded some temperature limit. The limit is set by BIOS. The temperature limit (programmed into the PHL register) is compared to the present temperature. If the present temperature is greater than the PHL value then the pin is asserted.

PCHHOT_​N is an O/D output and requires a Pull-up on the motherboard.

The PCH evaluates the temperature from the thermal sensor against the programmed temperature limit every one second.