Intel 9130M NE80567KF0288M User Manual
Product codes
NE80567KF0288M
System Management Bus Interface
106
Intel
®
Itanium
®
Processor 9300 Series Datasheet
6.4
PIROM Field Definitions
PIROM data is divided into sections containing similar data. Each section contains
specific fields defined in the following sections.
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.
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.
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:
• The S-SPEC or QDF of the part in hex ASCII format.
• Sample or Production field to identify a pre-production sample or a production unit.
• Required voltage regulator field
• VCCA and VCCIO voltage specs.
• Sample or Production field to identify a pre-production sample or a production unit.
• Required voltage regulator field
• VCCA and VCCIO voltage specs.
The S-SPEC or QDF field is six bytes of ASCII characters and is programmed with the
same S-spec or QDF value as marked on the processor.
same S-spec or QDF value as marked on the processor.
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.
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 Itanium processor 9300 series is 0x00.
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.
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 and/or the QDF/S-spec speed 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.
should equate to the markings on the processor and/or the QDF/S-spec speed 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.
Example: A 1733 GHz processor will have a value of 1733h.