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Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families 47
Datasheet Volume One
“Wake on PECI”
Mode Bit Write /
Read
05 0x0000
“Wake on PECI”
mode bit
N/A
Read status of
“Wake on PECI”
mode bit
N/A
Accumulated
Run Time Read
31 0x0000
Total reference
time
N/A
Returns the total run
time.
MSR 10h:
IA32_TIME_STAMP_COUNTER
Package
Temperature
Read
02 0x00FF
Processor
package
Temperature
N/A
Returns the
maximum processor
die temperature in
PECI format.
MSR 1B1h:
IA32_PACKAGE_THERM_STATUS
Per Core DTS
Temperature
Read
09
0x0000-
0x0007
(cores 0-7)
0x00FF -
System
Agent
Per core DTS
maximum
temperature
N/A
Read the maximum
DTS temperature of
a particular core or
the System Agent
within the processor
die in relative PECI
temperature format
MSR 19Ch: IA32_THERM_STATUS
Temperature
Target Read
16 0x0000
Processor T
jmax
and T
CONTROL
N/A
Returns the
maximum processor
junction
temperature and
processor T
CONTROL
.
MSR 1A2h:
TEMPERATURE_TARGET
CSR: TEMPERATURE_TARGET
Package
Thermal Status
Read / Clear
20 0x0000
Thermal Status
Register
N/A
Read the thermal
status register and
optionally clear any
log bits. The register
includes status and
log bits for TCC
activation,
PROCHOT_N
assertion and Critical
Temperature.
MSR 1B1h:
IA32_PACKAGE_THERM_STATUS
Thermal
Averaging
Constant Write /
Read
21 0x0000
Thermal
Averaging
Constant
N/A
Reads the Thermal
Averaging Constant
N/A
Thermal
Averaging
Constant Write /
Read
21 0x0000 N/A
Thermal
Averaging
Constant
Writes the Thermal
Averaging Constant
N/A
Thermally
Constrained
Time Read
32 0x0000
Thermally
Constrained
Time
N/A
Read the time for
which the processor
has been operating
in a lowered power
state due to internal
TCC activation.
N/A
Current Limit
Read
17 0x0000
Current Limit
per power plane
N/A
Reads the current
limit on the VCC
power plane
CSR:
PRIMARY_PLANE_CURRENT_
CONFIG_CONTROL
Accumulated
Energy Status
Read
03
0x0000 -
VCC
0x00FF - CPU
package
Accumulated
CPU energy
N/A
Returns the value of
the energy
consumed by just
the VCC power plane
or entire CPU
package.
MSR 639h: PP0_ENERGY_
STATUS
CSR: PP0_ENERGY_STATUS
MSR 611h:
PACKAGE_ENERGY_STATUS
CSR: PACKAG_ENERGY_STATUS
Power Limit for
the VCC Power
Plane Write /
Read
25 0x0000 N/A Power Limit Data
Program power limit
for VCC power plane
MSR 638h: PP0_POWER_LIMIT
CSR: PP0_POWER_LIMIT
Table 2-8. RdPkgConfig() & WrPkgConfig() CPU Thermal and Power Optimization
Services Summary (Sheet 2 of 3)
Service
Index
Value
(decimal)
Parameter
Value
(word)
RdPkgConfig()
Data (dword)
WrPkgConfig()
Data (dword)
Description
Alternate Inband
MSR or CSR Access