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PECI Interface
7.1.2.7.1
Package Identifier Read
This feature enables the PECI host to uniquely identify the PECI client processor. The
parameter field encodings shown in
relevant processor information as described below.
• CPUID data: This is the equivalent of data that can be accessed through the
CPUID instruction execution. It contains processor type, stepping, model and
family ID information as shown in
Figure 7-19. CPUID Data
31
28
27
Extended
RESERVED
Family ID
• Platform ID data: The Platform ID data identifies the platform type that the
processor is being used on as per the encodings in
can be used to ensure processor microcode updates are compatible with the
processor. Note that the value of the Platform ID or Processor Flag[2:0] as shown
in
Figure 7-20
Table 7-9.
Platform ID Encoding
Platform ID
0x00000000
0x00000001
0x00000002
All Others
Figure 7-20. Platform ID Data
• Uncore Device ID: This information can be used to uniquely identify the processor
device when combined with the Vendor Identification register content. Refer to the
appropriate register description for the exact Intel
processor Extreme Edition, Intel
i7-3820 processor Uncore Device ID value.
Thermal/Mechanical Specifications and Design Guide
20
19
16
15
Extended
RESERVED
Model
CPU ID Data
is typically unique to the platform type and processor stepping.
Platform Type
DP (Dual Processor)
UP (Single Processor)
Reserved
Reserved
31
Reserved
Table 7-8
allow the PECI host to access the
Figure
7-19.
13
12
11
Processor
Family ID
Type
Table
Platform ID Data
®
Core™ i7-3960X, i7-3970X
®
Core™ i7-3930K processor, and Intel
4
3
0
8
7
Model
Stepping ID
7-9. The Platform ID data
3
2
0
Processor
Flag
®
Core™
71
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