Intel III Xeon 733 MHz 80526KZ733256 User Manual
Product codes
80526KZ733256
PROCESSOR FEATURES
54
Table 45. Thermal Sensor SMBus Addressing
Address (Hex)
Upper Address
1
Slot Select
8-bit Address Word on Serial Bus
SA1
SA2
b[7:0]
3Xh 0011
0
0
0011000Xb
0011
1
0
0011010Xb
5Xh 0101
0
Z
2
0101001Xb
0101
1
Z
2
0101011Xb
9Xh 1001
0
1
1001100Xb
1001
1
1
1001110Xb
NOTES:
1.
Upper address bits are decoded in conjunction with the select pins.
2.
A tri-state or “Z” state on this pin is achieved by leaving this pin unconnected.
Note that system management software must be aware of the slot number-dependent changes in the address
for the thermal sensor.
Table 46. Memory Device SMBus Addressing
Address
(Hex)
Upper
Address
1
Slot Select
Memory
Device
Select
R/W
Device Addressed
Bits 7-4
(SA1)
Bit 3
(SA0)
Bit 2
Bit 1
Bit 0
A0h/A1h 1010 0 0
0 X
Scratch
EEPROM
1
A2h/A3h
1010
0
0
1
X
Processor Information ROM 1
A4h/A5h 1010 0 1
0 X
Scratch
EEPROM
2
A6h/A7h
1010
0
1
1
X
Processor Information ROM 2
A8h/A9h 1010 1 0
0 X
Scratch
EEPROM
3
AAh/ABh
1010
1
0
1
X
Processor Information ROM 3
ACh/ADh 1010 1 1
0 X
Scratch
EEPROM
4
AEh/AFh
1010
1
1
1
X
Processor Information ROM 4
This addressing scheme is targeted for up to 4-way MP systems. More processors can be supported by using
a multiplexed (or separate) SMBus implementation.