F81866A Datasheet, PDF (114/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

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
AMD
SIC
CPU
SID
SCL
SIO
SDA
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
CPU
PECI
avoid pre-BIOS floating
100
SIO
PECI
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
V
V
V
V
-
-
-
-
-
V
V
PECI 3.0 Command
Name
Ping( )
GetTemp( )
GetDIB( )
RdIAMSR( )
WrIAMSR( )
RdPCIConfigLocal( )
WrPCIConfigLocal( )
RdPCIConfig( )
WrPCIConfig( )
RdPkgConfig( )
WrPkgConfig( )
PECI 1.0 Command
Name
Ping( )
GetTemp( )
Status
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