Pc/104 Bus Interface; Pc/104 Bus Connector - Lippert 702-0008-10 Technical Manual

3.20 PC/104 Bus Interface

The PC/104 bus is a modification of the industry standard (ISA) PC bus specified in IEEE P996. The
PC/104 bus has different mechanics than P966 to allow the stacking of modules. The main features
are:
•
•
The following table shows the pin assignment of the PC/104 connector.

PC/104 Bus Connector

Pin
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TME-104-CLR-LX800-R1V3.doc
Supports programmable extra wait state for ISA cycles
Supports I/O recovery time for back-to-back I/O cycles
Note: -5 V on the PC/104 connector is not supported on this board.
D
GND GND
MEMCS16 SBHE
IOCS16 LA23
IRQ LA22
IRQ LA21
IRQ LA20
IRQ LA19
IRQ LA18
DACK LA17
DRQ MEMR
DACK MEMW
DRQ SD8
DACK SD9
DRQ SD10
DACK SD11
DRQ SD12
+5V SD13
MASTER SD14
GND SD15
GND GND
Rev. 1.3
Pin
1 IOCHCK
2 D7
3 D6
4 D5
5 D4
6 D3
7 D2
C 8 D1
9 D0
10 IOCHRDY
11 AEN
12 A19
13 A18
14 A17
15 A16
16 A15
17 A14
18 A13
19 A12
20 A11
21 A10
22 A9
23 A8
24 A7
25 A6
26 A5
27 A4
28 A3
29 A2
30 A1
31 A0
32 GND
A B
GND
RSTDRV
see note
+5V
IRQ9
-5V
DRQ2
see note
-12V
ENDXFER
+12V
KEY
SMEMW
SMEMR
IOW
IOR
DACK3
DRQ3
DACK1
DRQ1
REFRESH
SYSCLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
DACK2
TC
BALE
+5V
OSC
GND
GND
34(53)