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Struck Documentation
SIS8300-KU
MTCA.4 Digitizer
Page 14 of 92
2.8.5 AMC_TCLK on Zone 3
The AMC_TCLK signal can be derived from TCLKA or TCLKB. Selection and output
control of AMC_TCLK switch is under control of MMC. Currently the state of both signals
can be read from SIS8900 RTM LVDS Test Input/Output Control register, please refer to
section 7.5.32.
The TCLKA or TCLKB selection and switch output control can be made per IPMI command:
<IPMI> raw 0x30 0x03 0xEC
(E=1/0: TCLK active/deactivated, C=0/1: select TCLKA/TCLKB)
The status can be read back with the command:
<IPMI> raw 0x30 0x02
After power up TCLKA is selected per default.
AMC_TCLK signal is available for SIS8300-KU with Zone 3 class compatibility A1.1CO
and A1.0C only. Please refer to section 10.4.2.