Intel E5-4600, CM8062101038606, E5-2600, E5-1600 Package Identifier Read, Processor, Type, Flag

2.5.2.6.12Package Identifier Read

This feature enables the PECI host to uniquely identify the PECI client processor. The parameter field encodings shown in Table 2-8allow the PECI host to access the 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 2-21.

Figure 2-21. CPUID Data

31	28	27	20	19	16	15	13	12	11	8	7	4	3	0
RESERVED		Extended		Extended		RESERVED		Processor	Family ID			Model	Stepping ID
		Family ID		Model				Type

CPU ID Data

•Platform ID data: The Platform ID data can be used to ensure processor microcode updates are compatible with the processor. The value of the Platform ID or Processor Flag[2:0] as shown in Figure 2-22is typically unique to the platform type and processor stepping. Refer to the Intel® 64 and IA-32 Architectures Software Developer’s Manual (SDM) Volumes 1, 2, and 3 for more information.

Figure 2-22. Platform ID Data

31	3	2	0
	Reserved	Processor
			Flag
	Platform ID Data

•PCU Device ID: This information can be used to uniquely identify the processor power control unit (PCU) device when combined with the Vendor Identification register content and remains constant across all SKUs. Refer to the appropriate register description for the exact processor PCU Device ID value.

Figure 2-23. PCU Device ID

31		16	15	0
	RESERVED			PCU Device ID

PCU Device ID Data

•Max Thread ID: The maximum Thread ID data provides the number of supported processor threads. This value is dependent on the number of cores within the processor as determined by the processor SKU and is independent of whether certain cores or corresponding threads are enabled or disabled.

Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families	49
Datasheet Volume One