Sun Microsystems Netra 210, Service Manual

Page: 113 / 122

Appendix B Signal Pinouts B-5
B.3.1.2 RJ-45 to DB-25 Adapter Crossovers
B.3.2 Serial Port ( l0l0l )
The port labeled l0l0l accepts a DB-9 connector. Use this port for general purpose
serial data transfers.
FIGURE B-4
shows the pin numbering of the serial port, and
TABLE B-8
describes the pin signals.
5 Signal Ground 5 Signal Ground
6 RXD 3 TXD
7 DSR 4 DTR
8 CTS 7 RTS
TABLE B-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
TABLE B-6
RJ-45 to DB-9 Adapter Crossovers (Continued)
Serial Port (RJ-45 Connector) DB-9 Adapter
Pin Signal Description Pin Signal Description