Datasheet

Datasheet, Volume 2 281
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Processor Uncore Configuration Registers
4.1.9 HDR—Header Type Register
4.1.10 BIST—Built-In Self Test Register
4.1.11 SVID—Subsystem Vendor ID Register
4.1.12 SDID—Subsystem Device ID Register
HDR
Offset: Eh
Bit Attr
Reset
Value
Description
7RO 1b
Multi-function Device
This bit defaults to 1b since all these devices are multi-function
6:0 RO 00h
Configuration Layout
This field identifies the format of the configuration header layout. It is Type 0 for
all these devices. The default is 00h, indicating a ’endpoint device’.
BIST
Offset: Fh
Bit Attr
Reset
Value
Description
7:0 RO 0h
BIST Tests
Not supported. Hardwired to 00h
SVID
Offset: 2Ch
Bit Attr
Reset
Value
Description
15:0 RW-O 8086h
Subsystem Vendor Identification Number.
The default value specifies Intel but can be set to any value once after reset.
SDID
Offset: 2Eh
Bit Attr
Reset
Value
Description
15:0 RW-O 00h
Subsystem Device Identification Number
Assigned by the subsystem vendor to uniquely identify the subsystem