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4 ETX® connectors
Kontron User's Guide ETX CD 24
4.4.1 Connector X2 Signal Levels
Pin 1–50: [Power | ISA]
Pin Si
g
na
l
Descri
p
tion T
yp
e Termination Commen
t
1 GND Ground PWR - -
2 GND Ground PWR - -
3 SD14 ISA Data Bus IO-5 PU 8k2 5V -
4 SD15 ISA Data Bus IO-5 PU 8k2 5V -
5 SD13 ISA Data Bus IO-5 PU 8k2 5V -
6 MASTER# ISA 16-Bit Master I-5 PU 330R 5V -
7 SD12 ISA Data Bus IO-5 PU 8k2 5V -
8 DREQ7 ISA DMA Re
q
uest 7 I-5 PU 8k2 5V -
9 SD11 ISA Data Bus IO-5 PU 8k2 5V -
10 DACK7# ISA DMA Acknowled
g
e 7 IO-5 - 24mA source ca
p
.
11 SD10 ISA Data Bus IO-5 PU 8k2 5V -
12 DREQ6 ISA DMA Re
q
uest 6 I-5 PU 8k2 5V -
13 SD9 ISA Data Bus IO-5 PU 8k2 5V -
14 DACK6# ISA DMA Acknowled
g
e 6 IO-5 - 24mA source ca
p
.
15 SD8 ISA Data Bus IO-5 PU 8k2 5V -
16 DREQ5 ISA DMA Re
q
uest 5 I-5 PU 8k2 5V -
17 MEMW# ISA Memor
y
Write IO-5 PU 8k2 5V -
18 DACK5# ISA DMA Acknowled
g
e 5 IO-5 - 24mA source ca
p
.
19 MEMR# ISA Memor
y
Read IO-5 PU 8k2 5V -
20 DREQ0 ISA DMA Re
q
uest 0 I-5 PU 8k2 5V -
21 LA17 ISA Adress Bus
(
SA17
)
O-5 - -
22 DACK0# ISA DMA Acknowled
g
e 0 IO-5 - 24mA source ca
p
.
23 LA18 ISA Adress Bus
(
SA18
)
O-5 - -
24 IRQ14 ISA Interru
p
t Re
q
uest 14
/
ROM Chi
p
Selec
t
IO-5 PU 8k2 5V -
25 LA19 ISA Adress Bus
(
SA19
)
O-5 - -
26 IRQ15 ISA Interru
p
t Re
q
uest 15 I-5 PU 8k2 5V -
27 LA20 ISA Latchable Adress Bus O-5 - -
28 IRQ12 ISA Interru
p
t Re
q
uest 12 I-5 PU 8k2 5V -
29 LA21 ISA Latchable Adress Bus O-5 - -
30 IRQ11 ISA Interru
p
t Re
q
uest 11 I-5 PU 8k2 5V -
31 LA22 ISA Latchable Adress Bus O-5 - -
32 IRQ10 ISA Interru
p
t Re
q
uest 10 I-5 PU 8k2 5V -
33 LA23 ISA Latchable Adress Bus O-5 - -
34 IO16# ISA 16-Bit I
/
O Access I-5 PU 330R 5V -
35 GND Ground PWR - -
36 GND Ground PWR - -
37 SBHE# ISA S
y
stem B
y
te Hi
g
h Enable IO-5 - -
38 M16# ISA 16-Bit Memor
y
Access IO-5 PU 330R 5V -
39 SA0 ISA Adress Bus O-5 PU 8k2 5V -
40 OSC ISA Oscillator
(
CLK_ISA14#
)
O-3,3 - -
41 SA1 ISA Adress Bus O-5 PU 8k2 5V -
42 BALE ISA Buffer Adress Latch Enable IO-5 - -
43 SA2 ISA Adress Bus O-5 PU 8k2 5V -
44 TC ISA Terminal Coun
t
IO-5 - -
45 SA3 ISA Adress Bus O-5 PU 8k2 5V -
46 DACK2# ISA DMA Acknowled
g
e 2 IO-5 - -
47 SA4 ISA Adress Bus O-5 PU 8k2 5V -
48 IRQ3 ISA Interru
p
t Re
q
uest 3 I-5 PU 8k2 5V -
49 SA5 ISA Adress Bus O-5 PU 8k2 5V -
50 IRQ4 ISA Interru
p
t Re
q
uest 4 I-5 PU 8k2 5V -
Note: The termination resistors in this table are already mounted on the ETX® board. Please refer to the design
guide for information about additional termination resistors.