Pmbus - Intel SC5650HCBRP Product Specification

Intel® Server System SC5650HCBRP TPS
Signal Type (Active Low)
Sink current, Alert# = high
Alert# rise and fall time
4.2.5

PMBus

The PMBus features included in this specification are requirements for ac/dc silver box power
supply for use in mainstream server systems. This specification is based on the PMBus
specifications parts I and II, revision 1.2.
4.2.5.1 Related Documents
PMBus™ Power System Management Protocol Specification Part I – General Requirements,
Transport And Electrical Interface; Revision 1.2
PMBus™ Power System Management Protocol Specification Part II – Command Language;
Revision 1.2
System Management Bus (SMBus) Specification Version 2.0
4.2.5.2 Addressing
The power supply PMBus device address locations are shown below. For redundant systems
there are up to three signals to set the address location of the power supply once it is installed
in the system; Address2, Address1, Address0. For non-redundant systems the power supply
device address location should be B0h.
System addressing 0/0/0
Address2/Address1
/ Address0
PMBus device read B0h/B1h
addresses 2 1
1
Non-redundant power supplies will use the 0/0/0 address location
2
The addressing method uses the 7 MSB bits to set the address and the LSB to define whether
a device is reading or writing. The addresses defined above use 8 bits including the read/write
bit.
IPMI FRU Addressing
If the power supply has a FRU (field replaceable unit) serial EEPROM; it shall be located at the
following addresses.
System addressing
Address2/Address1/
Address0
FRU device addresses
2
1
Non-redundant power supplies will use the 0/0/0 address location.
2
The addressing method uses the 7 MSB bits to set the address and the LSB to define whether
a device is reading or writing. The addresses defined above use 8 bits including the read/write
bit.
Revision 1.2
0/0/1 0/1/0
B2h/B3h B4h/B5h
0/0/0 0/0/1 0/1/0
A0h/A1h A2h/A3h A4hA5h
1
Intel order number E81443-002
Open collector / drain output from power supply.
Pull-up to VSB located in system.
0/1/1 1/0/0
B6h/B7h B8h/B9h
0/1/1 1/0/0
A6h/A7h A8h/A9h
Power Sub-system
50 μA
100 μs
1/0/1 1/1/0
BAh/BBh BCh/BDh
1/0/1 1/1/0
AAh/ABh ACh/ADh
1/1/1
BEh/BFh
1/1/1
AEh/AFh
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