Intel 9130M NE80567KF0288M User Manual
Product codes
NE80567KF0288M
Intel
®
Itanium
®
Processor 9300 Series Datasheet
99
System Management Bus Interface
6
System Management Bus
Interface
The Intel Itanium processor 9300 series package includes a system management bus
(SMBus) interface. This chapter describes the features of the SMBus and its
components.
(SMBus) interface. This chapter describes the features of the SMBus and its
components.
6.1
Introduction
The processor includes an SMBus interface which allows access to several processor
features. The SMBus components include the Processor Information EEPROM (PIROM),
the Scratch EEPROM, and sideband access to the processor’s control and status
registers.
features. The SMBus components include the Processor Information EEPROM (PIROM),
the Scratch EEPROM, and sideband access to the processor’s control and status
registers.
The processor information EEPROM (PIROM) is programmed by Intel with
manufacturing and feature information specific to the Intel Itanium processor 9300
series. This information is permanently write-protected. The other EEPROM is a scratch
EEPROM that is available for other data at the system vendor’s discretion.
manufacturing and feature information specific to the Intel Itanium processor 9300
series. This information is permanently write-protected. The other EEPROM is a scratch
EEPROM that is available for other data at the system vendor’s discretion.
provides detail on the PIROM and the scratch EEPROM.
6.2
SMBus Memory Component
6.2.1
Processor Information ROM
Table 6-1.
Processor Information ROM Data (Sheet 1 of 6)
Sec #
Offset
Field Name
Data Type
Description
Example
General
0
00h
Data Format Revision
Hex
Incremented with PIROM
Table revisions
Rev 1.6 = 0x10
1
01h
EEPROM Size
Hex
Size in Bytes
128 bytes = 0080h; ie.
02h[7:0] = 0x00
01h[7:0] = 0x80
02h[7:0] = 0x00
01h[7:0] = 0x80
2
02h
3
03h
Processor Data Address
hex Byte pointer
Pointer to the section of PI-
ROM containing Processor
Production Data
0x0F; 0x00 if not present
4
04h
Processor Core Address
hex Byte pointer
Pointer to the section of PI-
ROM containing Processor
Core Data
0x22; 0x00 if not present
5
05h
Processor Uncore Address
hex Byte pointer
Pointer to the section of PI-
ROM containing Processor
Uncore Data
0x2E; 0x00 if not present
6
06h
Processor Cache Address
hex Byte pointer
Pointer to the section of PI-
ROM containing Processor
Cache Data
0x46; 0x00 if not present
7
07h
Package Data Address
hex Byte pointer
Pointer to the section of PI-
ROM containing Processor
Package Data
0x4F; 0x00 if not present