Lenovo AD80582QH056003 Datenblatt PDF herunterladen (Seite 130)

Features

130 Intel® Xeon® Processor 7400 Series Datasheet

7.4.3.8 Feature Data

This section provides information on key features that the platform may need to

understand without powering on the processor.

7.4.3.8.1 PCFF: Processor Core Feature Flags

This location contains a copy of results in EDX[31:0] from Function 1 of the CPUID

instruction. These details provide instruction and feature support by product family. A

decode of these bits is found in the AP-485 Intel

Processor Identification and CPUID

Instruction application note. Writes to this register have no effect.

7.4.3.8.2 PFF: Processor Feature Flags

This location contains additional feature information from the processor. Writes to this

Note: Bit 5 and Bit 6 are mutually exclusive (only one bit will be set).

Bits are set when a feature is present, and cleared when they are not.

Example: The Intel® Xeon® Processor 7400 Series does not support a SMBus

Thermal Sense Device, supports either a Serial Signature or Electronic signature,

supports an OEM EEPROM, supports Core VID and supports an L3 Cache. Offset 78h

will contain A7h or C7h (167 or 199 decimal).

7.4.3.8.3 PTCI: Processor Thread and Core Information

This location contains information regarding the number of cores and threads on the

processor. Writes to this register have no effect.

Example: The Intel® Xeon® Processor 7400 Series has two, four or six cores and one

thread per core. Therefore, this register will have a value of 9h, 11h or 19h.

Offset: 74h-77h

Bit Description

31:0 Processor Core Feature Flags

0000h-FFFFF: Feature Flags

Offset: 78h

Bit Description

7 Multi-Core (set if the processor is a multi core processor)

6 Serial signature (set if there is a serial signature at offset 4D - 54h)

5 Electronic signature present (set if there is a electronic signature at 4D - 54h)

4 Thermal Sense Device present (set if an SMBus thermal sensor on package)

3 Reserved

2 OEM EEPROM present (set if there is a scratch ROM at offset 80 - FFh)

1 Core VID present (set if there is a VID provided by the processor)

0 L3 Cache present (set if there is a level 3 cache on the processor)

1 2 ... 125 126 127 128 129 130 131 132 133 134 135 136

Keine Kommentare

Lenovo AD80582QH056003 Datenblatt Seite 130