EBX-22 Reference Manual
31
Interfaces and Connectors
Utility I/O Connectors
A number of interfaces on the EBX-22 are grouped together and made accessible through utility
I/O connectors J14, J15, and J23. Cables and boards are available from VersaLogic that provide
discrete connectors for each of the interfaces; however, you can create custom cables that surface
only the interfaces required by your application.
J14
I/O
C
ONNECTOR
The 50-pin I/O connector (J14) incorporates the COM ports, PS/2 keyboard and mouse,
programmable LED, reset button, soft power reset, and speaker interfaces. Table 5 illustrates the
function of each pin.
Table 5: J14 I/O Connector Pinout
J14
Pin
CBR-5009B
Connector
Pin
Signal
J14
Pin
CBR-5009B
Connector
Pin
Signal
1
COM1
1
Data Carrier Detect
COM4
RS-232 RS-422/485
2
J3
6
Data Set Ready
26
J5
1 Ground
Ground
3
Top DB9
2
Receive Data
27 5
RTS
TxD+
4
7
Request to Send
28 4
TXD
TxD-
5 3
Transmit
Data
29 –
Ground
Ground
6
8
Clear to Send
30 2
RXD
RxD-
7
4
Data Terminal Ready
31 3
CTS
RxD+
8 9
Ring
Indicator
32 –
Ground
Ground
9 5
Ground
33
Mouse
4 +5.0V
(Protected)
10
COM2
1
Data Carrier Detect
34
J4
1 Mouse
Data
11
J3
6
Data Set Ready
35 Top 3
Ground
12
Bottom DB9
2
Receive Data
36 5
Mouse
Clock
13
7
Request to Send
37
PBRESET
1 Pushbutton
Reset
14 3
Transmit
Data
38
S1
2 Ground
15
8
Clear to Send
39
Soft Power
1 Ground
16
4
Data Terminal Ready
40
Button J2
2 External
Wake
17 9
Ring
Indicator
41 – –
Ground
18 5
Ground
42
– Not
connected
COM3
RS-232 RS-422/485
43
Keyboard
4 +5.0V
(Protected)
19
J6
1 Ground
Ground 44
J4
1 Keyboard
Data
20
5 RTS TxD+
45
Bottom
3 Ground
21
4 TXD TxD-
46
5 Keyboard
Clock
22
– Ground
Ground 47
PLED
1 +5.0V
(Protected)
23
2 RXD RxD-
48
D1
2 Programmable
LED
24
3 CTS RxD+
49
Speaker
1 +5.0V
(Protected)
25
– Ground
Ground 50
SP1
2 Speaker
Drive
5
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