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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 16bit 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 CN10 and CN11 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: 40-pin PC/104 Expansion Slot
PIN Description PIN Description
1 GND 21 GND
2 MEMCS16* 22 SBHE*
3 IOSC16* 23 LA23
4 IRQ10 24 LA22
5 IRQ11 25 LA21
6 IRQ12 26 LA20
7 IRQ15 27 LA19
8 IRQ14 28 LA18
9 DACK0* 29 LA17
10 DRQ0 30 MEMR*
11
DACK5*
31
MEMW*
12 DRQ5 32 SD8
13 DACK6* 33 SD9
14 DRQ6 34 SD10
15 DACK7* 35 SD11
16 DRQ7 36 SD12
17 +5V 37 SD13
18
MASTER*
38
SD14
19 GND 39 SD15
20 GND 40 N/C
121
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