82801CA Datasheet, PDF (480/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

Electrical Characteristics
Figure 16-15. USB EOP Width
Tperiod
Differential
Data Lines
Figure 16-16. SMBus Transaction
t19
t20
SMBCLK
t131
t134
t21
t135
SMBDATA
t130
Figure 16-17. SMBus Timeout
Start
SMBCLK
t138
CLK_ack
Data
Crossover
Level
EOP
Width
t132
t133
t18
t137
t138
CLK_ack
Stop
SMBDATA
480
Intel^® 82801CA ICH3-S Datasheet