Sun Microsystems 60 用户手册
Appendix B
Signal Descriptions
B-5
B.2
Twisted-Pair Ethernet Connector
The twisted pair Ethernet (TPE) connector is a RJ-45 type connector located on the
motherboard back panel.
motherboard back panel.
illustrates the TPE connector configuration and
lists the connector pin assignments.
Caution –
Connect only TPE cable into TPE connector.
18
Not connected
None.
19
Not connected
None.
20
DTR
Data Terminal Ready
Used to control switching of the
DCE to the communication channel.
DCE to the communication channel.
21
Not connected
None.
22
Not connected
None.
23
Not connected
None.
24
TXC
Terminal Clock
Generated by the DTE to provide
timing information to the DCE.
Used only in synchronous mode
and only when the driver requests a
locally generated clock. Otherwise,
TXC echoes the modem-generated
clock. The falling edge of the clock
corresponds to the center of the
data bit transmitted on TXD.
timing information to the DCE.
Used only in synchronous mode
and only when the driver requests a
locally generated clock. Otherwise,
TXC echoes the modem-generated
clock. The falling edge of the clock
corresponds to the center of the
data bit transmitted on TXD.
25
Not connected
None.
TABLE B-2
Serial Port A and B Connector Pin Assignments (Continued)
Pin
Mnemonic
Signal Name
Description