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2.4.2 PCI Bus Connector Pinouts
Table 2–4 shows the PCI bus connector pinouts.
Table 2–4 PCI Bus Connector Pinouts (J35, J40–J42, J44, J46)
Pin
Signal
A1
TRST#
A5
Vdd
A9
—
A13
Gnd
A17
GNT#
A21
+3V
A25
AD[24]
A29
AD[20]
A33
+3V
A37
STOP#
A41
SBO#
A45
+3V
A49
AD[09]
A53
+3V
A57
AD[02]
A61
Vdd
B3
Gnd
B7
INTB
B11
PRSNT2#
B15
Gnd
B19
Vdd
B23
AD[27]
B27
AD[23]
B31
+3V
B35
IRDY#
B39
LOCK#
B43
+3V
B47
AD[12]
B51
Not used
B55
AD[05]
B59
Vdd
12 February 1999 – Subject To Change
AlphaPC 264DP Mainboard Connector Pinouts
Pin
Signal
A2
+12V
A6
INTA
A10
Vdd
A14
—
A18
Gnd
A22
AD[28]
A26
IDSEL
A30
Gnd
A34
FRAME#
A38
STOP#
A42
Gnd
A46
AD[13]
A50
Not used
A54
AD[06]
A58
AD[00]
A62
Vdd
B4
TDO
B8
INTD
B12
Gnd
B16
CLK
B20
AD[31]
B24
AD[25]
B28
Gnd
B32
AD[17]
B36
+3V
B40
PERR#
B44
C/BE#[1]
B48
AD[10]
B52
AD[08]
B56
AD[03]
B60
ACK64#
Pin
Signal
A3
TMS
A7
INTC
A11
—
A15
RST#
A19
—
A23
AD[26]
A27
+3V
A31
AD[18]
A35
Gnd
A39
+3V
A43
PAR
A47
AD[11]
A51
Not used
A55
AD[04]
A59
Vdd
B1
-12V
B5
Vdd
B9
PRSNT1#
B13
Gnd
B17
Gnd
B21
AD[29]
B25
+3V
B29
AD[21]
B33
C/BE#[2]
B37
DEVSEL#
B41
+3V
B45
AD[14]
B49
Gnd
B53
AD[07]
B57
Gnd
B61
Vdd
System Configuration and Connectors
Pin
Signal
A4
TDI
A8
Vdd
A12
Gnd
A16
Vdd
A20
AD[30]
A24
Gnd
A28
AD[22]
A32
AD[16]
A36
TRDY#
A40
SDONE
A44
AD[15]
A48
Gnd
A52
C/BE#[0]
A56
Gnd
A60
REQ64#
B2
TCK
B6
Vdd
B10
—
B14
—
B18
REQ#
B22
Gnd
B26
C/BE#[3]
B30
AD[19]
B34
Gnd
B38
Gnd
B42
SERR#
B46
Gnd
B50
Not used
B54
+3V
B58
AD[01]
B62
Vdd
2–11
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