82801DB Datasheet, PDF (37/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Signal Description
Signal Description
2
This section provides a detailed description of each signal. The signals are arranged in functional
groups according to their associated interface.
The “#” symbol at the end of the signal name indicates that the active, or asserted state occurs when
the signal is at a low voltage level. When “#” is not present, the signal is asserted when at the high
voltage level.
The following notations are used to describe the signal type:
I
Input Pin
O
Output Pin
OD
Open Drain Output Pin.
I/O
Bi-directional Input / Output Pin.
Intel^® 82801DB ICH4 Datasheet
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