Features
7.5.4.16
RES5: Reserved 5
This location is reserved. Writes to this register have no effect.
Offset:
47h-4Ah
Bit
Description
31:0
RESERVED
00000000h-FFFFFFFFh: Reserved
7.5.4.17
PUDCKS: Processor Uncore Data Checksum
This location provides the checksum of the Processor Uncore Data Section. Writes to
this register have no effect.
Offset:
4Bh
Bit
Description
7:0
Processor Uncore Data Checksum
One-byte checksum of the Processor Uncore Data Section
00h- FFh: See Section 7.5.10 for calculation of this value.
7.5.5
Package Data
This section contains substrate and other package related data.
7.5.5.1
PREV: Package Revision
This location tracks the highest level package revision. It is provided in an ASCII format
of four characters (8 bits x 4 characters = 32 bits). The package is documented as 1.0,
2.0, etc. If only three ASCII characters are consumed, a leading space is provided in
the data field. Writes to this register have no effect.
Example: The Intel Xeon Processor E7-8800/4800/2800 Product Families processor
utilizes the first revision of the LGA-1567 package. Thus, at offset 4C-4F-35h, the data
is a space followed by 1.0. In hex, this would be 20h, 31h, 2Eh, 30h.
Offset:
4Ch-4Fh
Bit
Description
31:24
Character 4
ASCII character or 20h
00h-0FFh: ASCII character
23:16
15:8
7:0
Character 3
ASCII character
00h-0FFh: ASCII character
Character 2
ASCII character
00h-0FFh: ASCII character
Character 1
ASCII character
00h-0FFh: ASCII character
164
Datasheet Volume 1 of 2
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