Specifications

AR-B1564 User¡¦s Guide
3-6
(4) RS-232C Connector (CN3)
There are 4 serial ports with EIA RS-232C interface on the AR-B1564. To configure these serial ports, use the
BIOS Setup program to do well.
To use the enclosed RS-232 interface cable connecting the CN3, there are four DB-9 serial ports.
The pin assignments of the CN3 for serial port A, B, C, & D are as follows:
Figure 3-9 CN3: RS-232C Connector
Port CN3 DB-9 Signal CN3 DB-9 Signal
1 1 -DCD A 2 6 -DSR A
3 2 RXD A 4 7 -RTS A
5 3 TXD A 6 8 -CTS A
7 4 -DTR A 8 9 -RI A
Port 1
(COM A)
9 5 GROUND A 10 -- VCC A
11 1 -DCD B 12 6 -DSR B
13 2 RXD B 14 7 -RTS B
15 3 TXD B 16 8 -CTS B
17 4 -DTR B 18 9 -RI B
Port 2
(COM B)
19 5 GROUND B 20 -- VCC B
21 1 -DCD C 22 6 -DSR C
23 2 RXD C 24 7 -RTS C
25 3 TXD C 26 8 -CTS C
27 4 -DTR C 28 9 -RI C
Port 3
(COM C)
29 5 GROUND C 30 -- VCC C
31 1 -DCD D 32 6 -DSR D
33 2 RXD D 34 7 -RTS D
35 3 TXD D 36 8 -CTS D
37 4 -DTR D 38 9 -RI D
Port 4
(COM D)
39 5 GROUND D 40 -- VCC D
Table 3-2 RS-232C Connector Pin Assignment
NOTE: 1) N.C. means “ Not Connect” .
2) If COM A selected TTL mode, please connect to COM A header of CN14.
3) If COM B selected RS-422 or RS-485 mode, please connect to COM B header of CN14.
(5) IrDA Header (J5)
Figure 3-10 J5: IrDA Header