topic Re: CPU Monitoring: Where is the PECI datasheet ? in Mobile and Desktop Processors

CPU Monitoring: Where is the PECI datasheet ?

idata — Thu, 25 Jun 2009 10:03:20 GMT

Hello,

I'm trying to get the CPU T°C through the PECI register like it is introduced in many Intel processors datasheet.

Unfortunately I can't find any technical information about the PECI commands. However this is written in many datasheets:

PECI command support is covered in detail in Platform Environment Control Interface

Specification. Please refer to this document for details on supported PECI command function and codes.

I searched a lot but I can't find this document nowhere. Should I send an e-mail to intel support to get it ?

Thanks !

Re: CPU Monitoring: Where is the PECI datasheet ?

HERBERT_H_Intel — Fri, 26 Jun 2009 09:49:03 GMT

PECI itself is not very feature rich. there are two commands.

http://www.intel.com/Assets/PDF/datasheet/313355.pdf# page=88

Re: CPU Monitoring: Where is the PECI datasheet ?

idata — Fri, 26 Jun 2009 12:10:47 GMT

Yep, it's OK I wasn't searching at the good place.

I just have to read the IA32_THERM_STATUS(019Ch) Register (MSR) to get Digital Sensor data. I've found that in the "Intel® 64 and IA-32 Architectures Software Developer's Manual -- Volume 3A: System Programming Guide".

Thank's !