Intel 9140N NE80567KE025009 User Manual

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Offset 56h-5Ch contains seven ASCII characters reflecting the Intel part number for the 
processor. This information is typically marked on the outside of the processor. If the 
part number is less than 7 characters, a leading space is inserted into the value.

Example: A processor with a part number of 80546KF will have data as 46h, 4bh, 36h, 
34h, 35h, 30h, 38h starting at offset 56h.

Offset 5Dh-64h contains a unique 64-bit identification number.

Offset 65h-66h contain a bcd representation of core base frequency.

Example: A processor with a core base frequency of 1600 MHz will have data as 00, 16 
starting at offset 65h.

Offset 6Bh contains the thermalert threshold expressed as the number of degrees C 
below the PROCHOT_N (thermal throttling) temperature in hex format. 

The de-assertion threshold is expressed as the number of degrees C below the 
thermalert hot threshold value in hex format.

Example: reading offset 6Bh=00001010 and 6Ch=0000010, then programming the 
CSRs with these values means THERMALERT_N will be asserted when junction 
temperature rises to 10C below the PROCHOT_N (thermal throttle) threshold and will 
remain asserted until the junction temperature drops to 12C below the PROCHOT_N 
threshold.

Offset 6Dh is programmed with 2 hex digits representing the max TDP of the part.

Example: 6Dh = 0xB9 indicates a 185 W part.

Offset 6Eh contains the recommended TControl spec in degrees C below PROCHOT_N 
temperature in hex format.

This section provides information on key features that the platform may need to 
understand without powering on the processor.