Pc/104 Bus Interface; Pc/104 Bus Connector - Lippert Cool SpaceRunner LX800 Technical Manual

3.18 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:
·
Supports programmable extra wait state for ISA cycles
·
Supports I/O recovery time for back-to-back I/O cycles
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
Note:
TME-104P-CSR-LX800-R1V11.doc
D C
GND GND
MEMCS16 SBHE
IOCS16 LA23
IRQ10 LA22
IRQ11 LA21
IRQ12 LA20
IRQ15 LA19
IRQ14 LA18
DACK0 LA17
DRQ0 MEMR
DACK5 MEMW
DRQ5 SD8
DACK6 SD9
DRQ6 SD10
DACK7 SD11
DRQ7 SD12
+5 Volt SD13
MASTER SD14
GND SD15
GND KEY
The voltages +5 V, +12 V and -12 V are not generated by the onboard
power-supply but they are routed from the Power Supply Connector.
The maximum current is limited depending on voltage:
+12 V < 1 A; -12 V < 0,3 A; +5 V < 3 A
One pin can be used for 1 A at maximum.
Pin A
1 IOCHCK
2 D7
3 D6
4 D5
5 D4
6 D3
7 D2
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
Rev 1.11
B
GND
RSTDRV
+5 Volt
IRQ9
n.c.
DRQ2
-12 Volt
n.c.
+12 Volt
n.c.
SMEMW
SMEMR
IOW
IOR
DACK3
DRQ3
DACK1
DRQ1
REFRESH
SYSCLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
DACK2
TC
BALE
X18
+5 Volt
OSC
GND
GND
30 (50)