He section, Pl4 – coms ports, 244h – Eurotech Appliances VIPER / VIPER-LITE PXA255 User Manual
Page 89: For pin a, 325h, Coms ports, 326h, Coms connector pl4, see, 376h, For connection
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VIPER Technical Manual
Connectors, LEDs and jumpers
© 2007 Eurotech Ltd Issue E
89
PL4 – COMS ports
Connector: Oupiin 3012-40GRB/SN, 40-way, 2.54mm (0.1”) x 2.54mm (0.1”) dual row
IDC boxed header
Mating connector: FCI 71600-040LF
Pin Signal name
Pin Signal name
1 SCL
(I
2
C) 2
SDA
(I
2
C)
3 GND
(I
2
C) 4
3.3V
(I
2
C)
5 TX5+
(RS422)
(TX5+/RX5+ RS485)
6 TX5-
(RS422)
(TX5-/RX5- RS485)
7
RX5+ (RS422)
8
RX5- (RS422)
9 GND
10 GND
11 TX3
12 RX3
13 RX2
14 RTS2
15 TX2
16 CTS2
17 GND
18 GND
19 GND
20 NC
21 DCD4
22 DSR4
23 RX4
24 RTS4
25 TX4
26 CTS4
27 DTR4
28 RI4
29 GND
30 NC
31 DCD1
32 DSR1
33 RX1
34 RTS1
35 TX1
36 CTS1
37 DTR1
38 RI1
39 GND
40 NC
As viewed from the connector pins
VL
VL
I
2
C
COM5
COM3
COM2
COM4
COM1
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