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Appendix A Connector Signal Descriptions 159
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.
25 Not connected None.
Pin Mnemonic Signal Name Description