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| 82801DB Datasheet, PDF (545/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4) | |||
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Electrical Characteristics
Figure 17-17. SMBus Timeout
Start
SMBCLK
t138
CLKack
t137
t138
CLKack
Stop
SMBDATA
Figure 17-18. Power Sequencing and Reset Signal Timings
PW ROK,
VRMPW RGD
Vcc3_3, Vcc1_5,
V_CPU_IO
V5Ref
RSMRST#,
RSM_PW RO K
VccSus3_3,
VccSus1_5
V5RefSus
RTCRST#
VccRTC
T172
T170
T175
T173
T171
T176
T174
ich4_p owe rup_res et_DT .vsd
Intel® 82801DB ICH4 Datasheet
545
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