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A.3 Serial Ports
Appendix A • Signal Pinouts
153
A.3.1.2
RJ-45 to DB-25 Adapter Crossovers
TABLE A-7
RJ-45 to DB-25 Adapter Crossovers
Serial Port (RJ-45 Connector)
DB-25 Adapter
Pin
Signal Description
Pin
Signal Description
1
RTS
5
CTS
2
DTR
6
DSR
3
TXD
3
RXD
4
Signal Ground
7
Signal Ground
5
Signal Ground
7
Signal Ground
6
RXD
2
TXD
7
DSR
20
DTR
8
CTS
4
RTS
A.3.2
Serial Port TTYA
The port labeled TTYA accepts a DB-9 connector. Use this port for general purpose serial data
shows the pin numbering of the serial port.
describes the pin
signals.
FIGURE A-4
Serial Port (TTYA) Pin Numbering
TABLE A-8
Serial Port (TTYA) Connector Signals
Pin
Signal Description
Pin
Signal Description
1
Data Carrier Detect
6
Data Set Ready
2
Receive Data
7
Request to Send
3
Transmit Data
8
Clear to Send
4
Data Terminal Ready
9
Ring Indicate
Summary of Contents for Sun Netra T5440
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