User`s manual

14 Installation
72XX Series
User’s Manual
2.6 Connector Pin Assignment
2.6.1 PCI-7224/7248/7296 & PCIe-7248/7296 Pin Assign-
ment
The I/O ports of 7224/7248/7296 emulate the mode 0 configura-
tion of the 8255 general purpose programmable peripheral inter-
face. The cards come equipped with 50-pin male IDC connectors
that interface with OPTO-22. Figure 2.4 shows the circuits and
pinout of 7224/7248/7296's connectors (CN1-CN4).
Figure 2-6: Pin assignments and power signals of PCI/PCIe-7224/7248/7296
The DIO pin names are specified as PnXb, where
n: : means the connector reference number n=1-4.
X: : means the port name, X=A, B or C
b : means the bit number of a port, b=0-7
1
2
3
JPn
+1 2V
FUSE
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
CN n
HE AD ER 25 X2
PnC7
PnC6
PnC5
PnC4
PnC3
PnC2
PnC1
PnC0
PnB7
PnB6
PnB5
PnB4
PnB3
PnB2
PnB1
PnB0
PnA7
PnA6
PnA5
PnA4
PnA3
FUSE
PnA2
PnA1
PnA0
+5V