Interfaces And Connectors; Utility I/O Connectors; J4 I/O Connector - VersaLogic Python EBX-11 Reference Manual

Utility I/O Connectors

A number of interfaces on the EBX-11 are grouped together and made accessible through utility
I/O connectors J4, J5, and J10. A number of cables and boards are available from VersaLogic
that provide discrete connectors for each of the interfaces; however, you may wish to create
custom cables that surface only the interfaces required by your application.
J4 I/O C
ONNECTOR
The 50-pin I/O connector (J4) incorporates the COM ports, keyboard and mouse, and the reset
button and speaker interfaces. Table 4 illustrates the function of each pin.
Note: On Rev. 4 boards, the COM3 and COM4 connectors have a nonstandard pinout.
The RxD+ and RxD- signals are transposed. The standard pinout is shown below.
The nonstandard pinout is shown in Table 11.
J4 CBR-5009B
Pin Connector
1 COM1
2 J3
3 Top DB9
4
5
6
7
8
9
10 COM2
11 J3
12 Bottom DB9
13
14
15
16
17
18
COM3
19 J6
20
21
22
23
24
25
EBX-11 Reference Manual

Interfaces and Connectors

Table 4: J4 I/O Connector Pinout – Rev. 5.00 and Later Boards
Pin Signal
1 Data Carrier Detect
6 Data Set Ready
2 Receive Data
7 Request to Send
3 Transmit Data
8 Clear to Send
4 Data Terminal Ready
9 Ring Indicator
5 Ground
1 Data Carrier Detect
6 Data Set Ready
2 Receive Data
7 Request to Send
3 Transmit Data
8 Clear to Send
4 Data Terminal Ready
9 Ring Indicator
5 Ground
RS-232 RS-485 RS-422
1 Ground 485 GND Ground
5 RTS TxD+
4 TXD TxD-
–
Ground 485 GND Ground
2 RXD RxD-
3 CTS RxD+
–
Ground Ground
J4 CBR-5009B
Pin Connector Pin
COM4
26 J5 1
27 5
28 4
–
29
30 2
31 3
–
32
33 Mouse 4
34 J4 1
35 Top 3
36 5
37 PBRESET 1
38 2
S1
39 (Reserved) 1
40 2
41 3
42 4
43 4
Keyboard
44 J4 1
45 Bottom 3
46 5
47 1
PLED
48 D1 2
49 Speaker 1
50 SP1 2
5
Signal
RS-232 RS-422
Ground 485 GND Ground
RTS TxD+
TXD TxD-
Ground 485 GND Ground
RXD RxD-
CTS RxD+
Ground Ground
+5V (Protected)
Mouse Data
Ground
Mouse Clock
Pushbutton Reset
Ground
Ground
Not connected
Ground
Not connected
+5V (Protected)
Keyboard Data
Ground
Keyboard Clock
+5V (Protected)
Programmable LED
+5V (Protected)
Speaker Drive
26