Table 4.1 power and ground signals, Power and ground signals, Table 4.1 – LSI 53C810A User Manual
Page 65
4-3
Signals are assigned a type. There are four signal types:
describes the Power and Ground Signals group.
I
Input, a standard input only signal.
O
Output, a standard output driver (typically a Totem Pole Output).
T/S
3-state, a bidirectional, 3-state input/output signal.
S/T/S
Sustained 3-state, an active LOW 3-state signal owned and driven by
one and only one agent at a time.
Table 4.1
Power and Ground Signals
Name
Pin No.
Description
V
SS-I
5, 9, 13, 18, 22, 26, 32, 37, 43,
87, 93, 99
Power supplies to the PCI I/O pins.
V
DD-I
1
3, 16, 28, 40, 90
Power supplies to the PCI I/O pins.
V
SS-S
58, 63, 68, 73
Power supplies to the SCSI bus I/O pins.
V
DD-S
54, 77
Power supplies to the SCSI bus I/O pins.
V
SS-C
50, 81
Power supplies to the internal logic core.
V
DD-C
46, 84
Power supplies to the internal logic core.
1. These pins can accept a V
DD
source of 3.3 or 5 V. All other V
DD
pins must be supplied 5 V.