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3.4 Serial Ports
JUKI-752 offers two high speed NS16C550 compatible UARTs with Read/Receive
16 byte FIFO serial ports. These ports let you connect to serial devices or a
communication network. One DB-9 connector and thee 10-pin headers are
provided by the JUKI-752. The detailed pin assignments of the connectors are
specified below:
•
COM1 (CN14): Serial Port Connector
PIN Description
1
DATA CARRIER DETECT (DCD)
2
RECEIVE DATA (RXD)
3
TRANSMIT DATA (TXD)
4
DATA TERMINAL READY (DTR)
5 GROUND
(GND)
6
DATA SET READY (DSR)
7
REQUEST TO SEND (RTS)
8
CLEAR TO SEND (CTS)
9
RING INDICATOR (RI)
•
COM 2(CN11): 2x5-pin Header
PIN Description PIN Description
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 GND 10 N/C
