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3.21 PC/104 Connectors
The PC/104 expansion bus offers provisions to connect all types of
PC/104 modules. With the PC/104 bus being known as the new
generation of industrial embedded 16-bit PC standard bus, thousands
of PC/104 modules from multiple venders can be easily installed
onboard. The detailed pin assignment of the PC/104 expansion bus
connectors CN3 and CN4 are listed on the following tables:
NOTE：
The PC/104 connector allows direct plugging or stack-through
piling of PC/104 modules without requiring the PC/104 mounting
kit.
CN3: PC/104 40-pin Connector
PIN
Description PIN Description
1
GND
2
-MEMCS16
3
-IOSC16
4
IRQ10
5
IRQ11
6
IRQ12
7
IRQ15
8
IRQ14
9
-DACK0
10
DRQ0
11
-DACK5
12
DRQ5
13
-DACK6
14
DRQ6
15
-DACK7
16
DRQ7
17
+5V
18
-MASTER
19
GND
20
GND
26
21
GND
22
-SBHE
23
SA23
24
SA22
25
SA21
26
SA20
27
SA19
28
SA18
29
SA17
30
-MEMR
31
-MEMW
32
SD8
33
SD9
34
SD10
35
SD11
36
SD12
37
SD13
38
SD14
39
SD15
40
N/C
Connector diagram
rotated 90 degrees
clockwise from
original position
1
21
20
40
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