Datasheet

Power Sub-System Intel® Server System SR1640TH TPS
Revision 1.0
Intel order number: E94847-001
70
3.8.2 Data Format
The data format for current, voltage, power, temperature, and fan speed are using the
PMBus Literal format.
Literal data format: X = Y · 2
N
X = the sensor value in volts, amps, watts, degrees C, or RPM
Y = mantissa. The mantissa is the variable components that changes as the sensor value
changes. Y is a 16-bit unsigned value for the READ_VOUT command. For all other READ
commands, Y is an 11-bit signed 2’s compliment value. N = exponent. The exponents are
fixed for each power supply and define the resolution for each sensor.
3.8.3 Function commands supported
The following PMBus commands are supported for the purpose of monitoring currents,
voltages, power and status:
MFR_ID READ_IOUT
MFR_MODEL READ_VOUT
MFR_IOUT_MAX STATUS_CML
PMBUS_REVISION STATUS_TEMPERATURE
READ_POUT STATUS_FANS_1_2
READ_PIN STATUS_INPUT
READ_FAN_SPEED_n MFR_REVISION
STAUTS_IOUT CAPABLITY
STAUTS_VOUT CLEAR_FAULTS
STATUS_WORD ON_OFF_CONFIG
STATUS_BYTE OPERATION
QUERY PAGE
MFR_SERIAL MFR_POUT_MA
3.9 FRU data format
The information to be contained in the FRU device is shown in the following table
Table 68. FRU device information
Area type Description
Common header As defined by the FRU document
Internal use area Not required, do not reserve
Chassis info area Not required, do not reserve
Board info area Not required, do not reserve
3.9.1 Product info area
Implement as defined by the IPMI FRU document. Product information shall be defined as
follows: