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 -5V LA21 IRQ11
6 SD3 DRQ2 LA20 IRQ12
7 SD2 -12V 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 -- --
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