Interfaces and Connectors
EBX-41 Reference Manual
49
User I/O Connector
The 50-pin user I/O connector (J29) incorporates the COM ports, four USB ports, programmable
LED, power LED, pushbutton reset, power button, audio line in/out, and speaker interfaces. The
table below illustrates the function of each pin.
Table 23: User I/O Connector Pinout
J29
Pin
CBR-5013
Connector
Signal
J29
Pin
CBR-5013
Connector
Signal
RS-232
RS-422
25
USB 4
USB4-5 +5.0V
1
COM0
Ground
Ground
26
Data +
2
J2
RXD
RxD-
27
Data -
3
Top DB9
CTS
RxD+
28
USB 5
USB4-5 +5.0V
4
Ground
Ground
29
Data +
5
TXD
TxD-
30
Data -
6
RTS
TxD+
31
USB 6
USB6-7 +5.0V
7
COM1
Ground
Ground
32
Data +
8
J2
RXD
RxD-
33
Data -
9
Bottom DB9
CTS
RxD+
34
USB 7
USB6-7 +5.0V
10
Ground
Ground
35
Data +
11
TXD
TxD-
36
Data -
12
RTS
TxD+
37
+5.0V (Protected)
13
COM2
Ground
Ground
38
D1
Programmable LED
14
J5
RXD
RxD-
39
SP1
Speaker
15
CTS
RxD+
40
S2, J8 Pin 1
Pushbutton Reset
16
Ground
Ground
41
S1, J8 Pin 3
Power Button
17
TXD
TxD-
42
Ground
18
RTS
TxD+
43
Audio In
Audio In Left
19
COM3
Ground
Ground
44
J3 Top
HDA ground (isolated)
20
J6
RXD
RxD-
45
Audio In Right
21
CTS
RxD+
46
HDA ground (isolated)
22
Ground
Ground
47
Audio Out
Audio Out Left
23
TXD
TxD-
48
J3 Bottom
HDA ground (isolated)
24
RTS
TxD+
49
Audio Out Right
50
HDA ground (isolated)
LEDs
P
ROGRAMMABLE
LED
Connector J29 includes an output signal for a programmable LED. Connect the cathode of the
LED to J29 pin 38; connect the anode to +5V. A 332Ω on-board resistor limits the current to 15
mA. A programmable LED is provided on the VL-CBR-5013 breakout board. The programmable
LED is the top LED at position D1.