J8 Utility Connector - VersaLogic EPM-5 Reference Manual

J8 Utility Connector

The J8 50-pin utility connector incorporates the COM ports, USB ports, LEDs, speaker, and the
reset button. Table 6 illustrates the function of each pin and the pinout assignments to connectors
on the CBL/CBR-5010 breakout board.
J8 External
Pin Connector
1 COM1
2 J3
3
4
5
6
7
8
9
10
COM3
11
J6
12
13
14
15
16
COM4
J5
17
18
19
20
21
22
23 USB0
24
J4
25
26
Note: Do not connect to these pins in RS-485 mode.
EPM-5 Reference Manual
Table 6: J8 Utility Connector Pinout
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
– Ground
RS-422 RS-485
5 TxD+ (note)
4 TxD– (note)
1 Ground Ground
3 RxD+ TxD/RxD+
2 RxD– TxD/RxD–
– Ground Ground
RS-422 RS-485
5 TxD+ (note)
4 TxD– (note)
1 Ground Ground
3 RxD+ TxD/RxD+
2 RxD– TxD/RxD–
– Ground Ground
T4 Ground
T1 +5V (Protected)
T3 Channel 0 Data +
T2 Channel 0 Data -
Interfaces and Connectors
J8 External
Pin Connector Pin
27 USB1 TM4
28 J4 TM1
29 TM3
30 TM2
31 USB2 BM4
32 BM1
J4
33 BM3
34 BM2
35 B4
USB3
36 J4 B1
37 B3
38 B2
39 ACPI Push- 3
40 4
button J2
41 –
42 –
43 1
PROG LED
44 D1 3
45 IDE LED 2
46 D1 4
47 –
Speaker
48 S1 SP1
49 PBRESET 1
50 2
J2
Signal
Ground
+5V (Protected)
Channel 1 Data +
Channel 1 Data -
Ground
+5V (Protected)
Channel 2 Data +
Channel 2 Data -
Ground
+5V (Protected)
Channel 3 Data +
Channel 3 Data -
Ground
EIRQ1
reserved
reserved
+5V (Protected)
Programmable LED
+5V (Protected)
IDE LED
+5V (Protected)
Speaker Drive
Ground
Pushbutton Reset
29