Serial Ports; Rj-45 Network - NEC LC1400 Service & Reference Manual

Serial Ports

Pin Signal
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RIA

RJ-45 Network

Pin Signal
1 TX+
2 TX-
3 RX+
4 NC
5 NC
6 RX-
7 NC
8 NC
Serial Port Connector Pinout
Description
Data carrier detected
Receive data
Transmit data
Data terminal ready
Ground
Data set ready
Return to send
Clear to send
Ring indication active
RJ-45 Network Connector Pinout
Description
Transmit data plus—the positive signal for the TD differential pair contains the
serial output data stream transmitted onto the network
Transmit data minus—the negative signal for the TD differential pair contains the
same output as pin 1
Receive data plus—the positive signal for the RD differential pair contains the
serial input data stream received from the network
Receive data minus—the negative signal for the RD differential pair contains the
same input as pin 3
Connectors E-9