Intel C2518 FH8065501516710 Data Sheet
Product codes
FH8065501516710
Volume 2—SMBus 2.0 Unit 2 - PECI—C2000 Product Family
CPU Thermal and Power Optimization Capabilities
Intel
®
Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 2 of 3
September 2014
420
Order Number: 330061-002US
17.9.4
Accumulated Run Time Read (Index = 31)
This read returns the total time for which the processor has been executing with a
resolution of 1 ms per count. This is tracked by a 32-bit counter that rolls over on
reaching the maximum value. This counter activates and starts counting for the first
time when the SoC de-asserts the active-low CPU_RESET_B output signal pin.
17.9.5
Package Temperature Read (Index = 2)
This read returns the maximum processor die temperature in 16-bit PECI format. The
temperature data returned by this read is the “instantaneous” value and not the
“average” value as is returned by the PECI GetTemp() described in
.
17.9.6
Per Core DTS Temperature Read (Index = 9)
This feature enables the PECI host to read the maximum value of the Digital Thermal
Sensor (DTS) temperature for any specific core within the processor. Alternatively, this
service can be used to read the internal SoC System Agent (SSA) temperature. The
temperature is returned in the same data format as described in
PECI temperature format.
Reads to a parameter value outside the supported range return an error as indicated by
a completion code of 0x90. The supported range of parameter values can vary
depending on the number of processor cores within the SoC. The temperature data
returned through this feature is the “instantaneous” value and not the “average” value.
It is updated once every 1 ms.
Figure 17-19.Package Temperature Read Data
PECI
Temperature
Fractional Value
0
31
16
14
15
Reserved
Sign Bit
5
6
PECI
Temperature
Integer Value