4-6
Computer Group Literature Center Web Site
Connector Pin Assignments
4
Local Bus Expansion Connector (J4)
Connector J4 is a 110 pin AMP Z-pack 2mm hard metric type A connector
with keying for +3.3V or +5V. This connector routes the 64-bit local PCI
bus to the backplane for expansion. The pin assignments for J4 are as
follows (the outer row F is assigned and used as ground pins but is not
shown in the table):
Table 4-4. J4 Local PCI Expansion Connector
ROW A
ROW B
ROW C
ROW D
ROW E
25
AD36
AD35
AD34
AD33
AD32
25
24
AD40
AD39
AD38
GND
AD37
24
23
AD45
AD44
AD43
AD42
AD41
23
22
AD49
3.3V
AD48
AD47
AD46
22
21
AD53
AD52
AD51
GND
AD50
21
20
AD57
3.3V
AD56
AD55
AD54
20
19
AD61
AD60
AD59
GND
AD58
19
18
CBE4#
3.3V
PAR64
AD63
AD62
18
17
REQ64#
CBE7#
CBE6#
GND
CBE5#
17
16
AD2
3.3V
AD1
AD0
ACK64#
16
15
AD6
AD5
AD4
GND
AD3
15
12-14
KEY AREA
12-14
11
AD9
AD8
CBE0#
GND
AD7
11
10
AD13
5.0V
AD12
AD11
AD10
10
9
PAR
CBE1#
AD15
GND
AD14
9
8
STOP#
5.0V
LOCK#
PERR#
SERR#
8
7
FRAME#
IRDY#
TRDY#
GND
DEVSEL#
7
6
AD18
5.0V
AD17
AD16
CBE2#
6
5
AD21
CLK
AD20
GND
AD19
5
4
CBE3#
5.0V
No Connect
AD23
AD22
4
3
AD28
AD27
AD26
AD25
AD24
3
2
GNT#
REQ#
AD31
AD30
AD29
2