3.23 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 PC1 and PC2 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.
ꢂ PC2: 40-pin PC/104 Expansion Slot
PIN Description PIN Description
Connector diagram
rotated 90 degrees
clockwise from
1
GND
MEMCS16*
IOSC16*
IRQ10
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
GND
SBHE*
LA23
LA22
LA21
LA20
LA19
LA18
LA17
MEMR*
MEMW*
SD8
2
original position
3
4
1
21
5
IRQ11
6
IRQ12
7
IRQ15
8
IRQ14
9
DACK0*
DRQ0
10
11
12
13
14
15
16
17
18
19
20
DACK5*
DRQ5
DACK6*
DRQ6
SD9
SD10
SD11
SD12
SD13
SD14
SD15
N/C
DACK7*
DRQ7
+5V
MASTER*
GND
GND
20
40
27
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