Sun Microsystems 220R service manual Dsr

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

234 Sun Enterprise 220R Server Service Manual ♦ January 2000, Revision A