BECKHOFF CX1020 - Manual (Page 28)

Product overview
26 Embedded PC
PC 104 Bus
The PC 104 bus is a standardized bus with 104ISA signals for compact embedded systems.
For the functionality of the CX1020 modules eight further signals have been added (here marked with color).
Pin assignment of 16 Bit PC 104 Bus:
Pin
Number
Row A
Row B
Row C
4
Row D
4
1 IOCHCHK* GND GND GND
2 SD7 RESETDRV SBHE* MEMCS16*
3 SD6 +5V LA23 IOCS16*
4 SD5 IRQ9 LA22 IRQ10
5 SD4 n.c. (+12V internal) LA21 IRQ11
6 SD3 DRQ2 LA20 IRQ12
7 SD2 n.c. (+5V internal) LA19 IRQ13
8 SD1 ENDXFR* LA18 IRQ14
9 SD0 +12V LA17 DACK0*
10 IOCHRDY (KEY)² MEMR* DRQ0
11 AEN SMEMW* MEMW* DACK5*
12 SA19 SMEMR* SD8 DRQ5
13 SA18 IOW* SD9 DACK6*
14 SA17 IOR* SD10 DRQ6
15 SA16 DACK3* SD11 DACK7*
16 SA15 DRQ3 SD12 DRQ7
17 SA14 DACK1* SD13 +5V
18 SA13 DRQ1 SD14 MASTER*
19 SA12 REFRESH* SD15 GND
20 SA11 SYSCLK (KEY)² GND
21 SA10 IRQ7 -- --
22 SA9 IRQ6 -- --
23 SA8 IRQ5 -- --
24 SA7 IRQ4 -- --
25 SA6 IRQ3 -- --
26 SA5 DACK2* -- --
27 SA4 TC -- --
28 SA3 BALE -- --
29 SA2 +5V -- --
30 SA1 OSC -- --
31 SA0 GND -- --
32 GND GND -- --