1 connector x2 (signal levels), Pin 1–50: isa bus – Kontron ETX-LX User Manual
Page 54
12 Appendix D: ETX® Connector Pinouts
Kontron User's Guide ETX®-LX
54
12.4.1 Connector X2 (Signal Levels)
Pin 1–50: ISA Bus
Pin
Signal
Description
Type Termination
Comment
1
GND
Ground
PWR
-
-
2
GND
Ground
PWR
-
-
3
SD14
ISA Data Bus
IO-5
PU 10k 5V
-
4
SD15
ISA Data Bus
IO-5
PU 10k 5V
-
5
SD13
ISA Data Bus
IO-5
PU 10k 5V
-
6
MASTER#
ISA 16-Bit Master
I-5
-
-
7
SD12
ISA Data Bus
IO-5
PU 10k 5V
-
8
DREQ7
ISA DMA Request 7
I-5
PD 10k
-
9
SD11
ISA Data Bus
IO-5
PU 10k 5V
-
10
DACK7#
ISA DMA Acknowledge 7
IO-5
-
-
11
SD10
ISA Data Bus
IO-5
PU 10k 5V
-
12
DREQ6
ISA DMA Request 6
I-5
PD 10k
-
13
SD9
ISA Data Bus
IO-5
PU 10k 5V
-
14
DACK6#
ISA DMA Acknowledge 6
IO-5
-
-
15
SD8
ISA Data Bus
IO-5
PU 10k 5V
-
16
DREQ5
ISA DMA Request 5
I-5
PD 10k
-
17
MEMW#
ISA Memory Write
IO-5
-
-
18
DACK5#
ISA DMA Acknowledge 5
IO-5
-
-
19
MEMR#
ISA Memory Read
IO-5
-
20
DREQ0
ISA DMA Request 0
I-5
PD 10k
-
21
LA17
ISA Adress Bus (SA17)
O-5
-
-
22
DACK0#
ISA DMA Acknowledge 0
IO-5
-
-
23
LA18
ISA Adress Bus (SA18)
O-5
-
-
24
IRQ14
ISA Interrupt Request 14 / ROM Chip Select
IO-5
-
-
25
LA19
ISA Adress Bus (SA19)
O-5
-
-
26
IRQ15
ISA Interrupt Request 15
I-5
-
-
27
LA20
ISA Latchable Adress Bus
O-5
-
-
28
IRQ12
ISA Interrupt Request 12
I-5
-
-
29
LA21
ISA Latchable Adress Bus
O-5
-
-
30
IRQ11
ISA Interrupt Request 11
I-5
-
-
31
LA22
ISA Latchable Adress Bus
O-5
-
-
32
IRQ10
ISA Interrupt Request 10
I-5
-
-
33
LA23
ISA Latchable Adress Bus
O-5
-
-
34
IO16#
ISA 16-Bit I/O Access
I-5
-
-
35
GND
Ground
PWR
-
-
36
GND
Ground
PWR
-
-
37
SBHE#
ISA System Byte High Enable
IO-5
-
-
38
M16#
ISA 16-Bit Memory Access
IO-5
-
39
SA0
ISA Adress Bus
O-5
PU 10k 5V
-
40
OSC
ISA Oscillator (CLK_ISA14#)
O-3,3
-
-
41
SA1
ISA Adress Bus
O-5
PU 10k 5V
-
42
BALE
ISA Buffer Adress Latch Enable
IO-5
-
-
43
SA2
ISA Adress Bus
O-5
PU 10k 5V
-
44
TC
ISA Terminal Count
IO-5
-
-
45
SA3
ISA Adress Bus
O-5
PU 10k 5V
-
46
DACK2#
ISA DMA Acknowledge 2
IO-5
-
-
47
SA4
ISA Adress Bus
O-5
PU 10k 5V
-
48
IRQ3
ISA Interrupt Request 3
I-5
-
-
49
SA5
ISA Adress Bus
O-5
PU 10k 5V
-
50
IRQ4
ISA Interrupt Request 4
I-5
-
-
Note:
The termination resistors in this table are already mounted on the ETX® board. Refer to the design guide for
information about additional termination resistors.