PCI LOCAL BUS PIN ASSIGNMENTS
The PCI Local Bus specifies both 5-volt and 3.3-volt signaling en-
vironments. The bus pin assignments shown below are for the 5-volt
connector. The 3.3-volt connector bus pin assignments are the same
with the following exceptions:
*
The pins noted as +V (I/O) are +5 volts or +3.3 volts, depend-
ing on which connector is being used.
†
Pins B12, B13, A12 and A13 are Gnd (ground) on the 5-volt
connector, but are Connector Keys on the 3.3-volt connector.
†† Pins B50, B51, A50 and A51 are Connectors Keys on the 5-
volt connector, but are Gnd (ground) on the 3.3-volt connec-
tor.
32-bit connector start
I/O
Signal
Pin
Name
B1
-12V
B2
TCK
B3
Gnd
B4
TDO
B5
+5V
B6
+5V
B7
INTB#
B8
INTD#
B9
PRSNT1#
B10
Reserved
B11
PRSNT2#
B12
Gnd †
B13
Gnd †
B14
Reserved
B15
Gnd
B16
CLK
B17
Gnd
B18
REQ#
B19
+V (I/O) *
B20
AD31
B21
AD29
B22
Gnd
I/O
Signal
Pin
Name
A1
TRST#
A2
+12V
A3
TMS
A4
TDI
A5
+5V
A6
INTA#
A7
INTC#
A8
+5V
A9
Reserved
A10
+V (I/O) *
A11
Reserved
A12
Gnd †
A13
Gnd †
A14
Reserved
A15
RST#
A16
+V (I/O) *
A17
GNT#
A18
Gnd
A19
Reserved
A20
AD30
A21
+3.3V
A22
AD28
PCI REFERENCE
2-12
TECHNICAL REFERENCE
Summary of Contents for SB586TCP/166
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Page 11: ...SPECIFICATIONS TECHNICAL REFERENCE 1 3...
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Page 94: ...This page intentionally left blank ADVANCED SETUP 5 18 TECHNICAL REFERENCE...
Page 106: ...This page intentionally left blank PERIPHERAL SETUP 7 8 TECHNICAL REFERENCE...
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