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AR-B1890 User’s Manual
24
Slim Floppy Connector ( FDD1 )
Pin Assignment Pin Assignment
1 VCC 2 INDEX#
3 VCC 4 DRV _ SEL#
5 VCC 6 DSK _ CH#
7 N / C 8 N / C
9 N / C 10 MOTOR#
11 N / C 12 DIR#
13 DENSEL# 14 STEP#
15 GND 16 WDATA#
17 GND 18 WGATE#
19 GND 20 TRACK#
21 GND 22 WPROT#
23 GND 24 RDATA#
25 GND 26 SIDE#
COM1 RS-232 Connector ( COM1 )
Pin Assignment Pin Assignment
1 DCD1# 2 RXD1
3 TXD1 4 DTR1#
5 GND 6 DSR1#
7 RTS1# 8 CTS1#
9 RI1#
COM2 RS-232/422/485 Connector ( COM2 )
Pin Assignment Pin Assignment
1 DCD2#(422TXD-/485DATA-) 2 RXD2(422RXD+)
3 TXD2(422TXD+/485DATA+) 4 DTR2#(422RXD-)
5 GND 6 DSR2#
7 RTS2# 8 CTS2#
9 RI2#