F81866A
6.10 AMD TSI and Intel PECI 3.0 Functions
The F81866A provides Intel PECI/AMD TSI interfaces for new generational CPU temperature
sensing. In AMD TSI interface, there are SIC and SID signals for temperature information
reading from AMD CPU. The SIC signal is for clocking use, the other is for data transferring.
More detail, please refer register description.
VDDIO
300
300
SIC
SID
SCL
SDA
AMD
CPU
SIO
Fig 6-25 AMD TSI
In Intel PECI interface, the F81866A can connect to the CPU directly. The F81866A can read
the temperature data from CPU, then the fan control machine of F81866A can implement the Fan
to cool down the CPU temperature. The application circuit is as below.
Intel
SIO
PECI
CPU
avoid pre-BIOS floating
PECI
100
Fig 6-26 Intel PECI
Please see below for the Intel PECI 3.0 Spec. commands. The F81866A integrated most of
those commands for the future advantage application. More detail, please refer to the register
descriptions.
F81866A
Support
PECI 3.0 Command
Name
PECI 1.0 Command
Name
Status
V
V
V
V
-
Ping( )
GetTemp( )
GetDIB( )
RdIAMSR( )
Ping( )
GetTemp( )
WrIAMSR( )
-
-
-
-
V
V
RdPCIConfigLocal( )
WrPCIConfigLocal( )
RdPCIConfig( )
WrPCIConfig( )
RdPkgConfig( )
WrPkgConfig( )
Not Available in Mobile/DT
Not Available in Mobile/DT
Not Available in Mobile/DT
Not Available in Mobile/DT
114
Jan, 2012
V0. 12P
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