Sun Microsystems 220R - page 234

Pin Mnemonic Signal Name Description
6 DSR Data Set
Ready Used by the DCE to indicate if it is ready to operate. When DSR is ON, the DCE is
connected to theline and ready to exchange
further control signals to start data transfer.
7 Gnd Signal
Ground
8 DCD DataCarrier
Detect Used by the DCE to indicate it is receiving a suitable signal from the communications
channel.
9 Not
connected None.
10 Not
connected None.
11 Not
connected None.
12 Not
connected None.
13 Not
connected None.
14 Not
connected None.
15 TRXC Transmit
Clock Used by the DCE to provide timing information to the DTE. The DTE provides
dataon TXD in whichthe transition of thebit
corresponds to the rising edge of the clock.
16 Not
Connected None.
17 RTXC Receive
Clock Used by the DCE to provide timing information to the DTE. The falling edge of
the clock corresponds to the center of the
data bit received on RXD.
18 Not
connected None.
19 Not
connected None.
234 Sun Enterprise 220R Server Service Manual ♦January 2000, Revision A