Serial Port Connectors - BOSER Technology HS-4700 Manual

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3.11 Serial Port Connectors

The HS-4700 offers two NS16C550 compatible UARTs with
Read/Receive 16-byte FIFO serial ports and four internal 10-pin
headers.
CN16~CN19: COM1~COM4 Connectors (5x2 Header)
PIN Description PIN Description
1 DCD0
3 RXDD0
5 TXDD0
7 DTR0
9 GND
11 DCD1
13 RXDD1
15 TXDD1
17 DTR1
19 GND
21 DCD2
23 RXDD2
25 TXDD2
27 DTR2
29 GND
31 DCD3
33 RXDD3
35 TXDD3
37 DTR3
39 GND
2 DSR0
4 RTS0
RXDD0
6 CTS0
TXDD0
8 RI0
10 N/C
12 DSR1
RXDD1
14 RTS1
TXDD1
16 CTS1
18 RI1
20 N/C
22 DSR2
RXDD2
24 RTS2
TXDD2
26 CTS2
28 RI2
30 N/C
RXDD3
32 DSR3
TXDD3
34 RTS3
36 CTS3
38 RI3
40 N/C
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1 2
DCD0 DSR0
RTS0
CN16
CTS0
COM1
DTR0 RI0
GND N/C
DCD1 DSR1
RTS1
CN17
CTS1
COM2
DTR1 RI1
GND N/C
DCD2 DSR2
RTS2
CN18
CTS2
COM3
DTR2 RI2
GND N/C
DCD3 DSR3
RTS3
CN19
CTS3
COM4
DTR3 RI3
GND N/C
39 40
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