Pirom Field Definitions; General; For The Intel ® Itanium ® Processor 9300 Series; Processor Data - Intel BX80569Q9550 - Core 2 Quad 2.83 GHz Processor Datasheet

Intel itanium processor quad-core 1.86-1.73 ghz with 24 mb l3 cache 9350, intel itanium processor quad-core 1.73-1.60 ghz with 20 mb l3 cache 9340, intel itanium processor quad-core 1.60-1.46 ghz with 20 mb l3 cache 9330, intel itanium processor quad-core
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6.4

PIROM Field Definitions

PIROM data is divided into sections containing similar data. Each section contains
specific fields defined in the following sections.
6.4.1

General

To maintain backward compatibility, the General section defines the starting address for
each subsequent section of the PIROM. Software should check for the offset before
reading data from a particular section of the ROM.
The General section begins with offset 00h which contains Data Format Revision
information, followed by the EEPROM size, both formatted in Hex bytes. The data
format revision is used whenever fields within the PIROM are updated with new values.
Normally the revision would begin at a value of 1. If a field, or bit assignment within a
field, is changed such that software needs to discern between the old and new
definition, then the data format revision field should be incremented.
6.4.2

Processor Data

This section contains following pieces of data:
• Sample or Production field to identify a pre-production sample or a production unit.
• Required voltage regulator field
• VCCA and VCCIO voltage specs.
The sample or production field is a two-bit, LSB-aligned value. 0x00 indicates unlocked
PIROM section. This is the case in most samples. 0x01 indicates a locked PIROM
section. Some samples and all production parts will be locked.
The required voltage regulator field for the Intel
0x00. The required voltage regulator field for the Intel® Itanium® Processor 9500
Series is 0x01.
6.4.3

Processor Core Data

This section contains silicon-related data relevant to the processor cores.
6.4.3.1
CPUID
Offset 22h-25h contains a copy of the results in EAX[31:0] from Function 1 of the
CPUID instruction.
6.4.3.2
Boost Core Frequency
Offset 26h-27h provides the boost core frequency for the processor. The frequency
should equate to the markings on the processor even if the parts are not limited or
locked to the intended speed. Format of this field is in MHz, rounded to a whole
number, and encoded as four 4 bit-bcd digits. Offset 26h contains the core count for the
®
Intel
Itanium
Itanium
®
Example: For the Intel® Itanium® processor 9300 series, the 1733 GHz processor will
have a value of 1733. For the Intel
0x26 will have a value of 8.
152
®
Processor 9500 Series, while offset 27h is RESERVED for the Intel
Processor 9500 Series.
System Management Bus Interface
®
Itanium
®
®
Itanium
Processor 9500 Series eight core SKU,
®
®
Intel
Itanium
Processor 9300 Series and 9500 Series Datasheet
®
Processor 9300 Series is
®

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