DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
Signal Name:
TNEGO
Signal Description:
Signal Type:
Transmit Negative Data Output
Output
Updated on the rising edge of TCLKO with the bipolar data out of the transmit-side formatter. This pin is
normally tied to TNEGI.
Signal Name:
TCLKO
Signal Description:
Signal Type:
Transmit Clock Output
Output
Buffered output of signal that is clocking data through the transmit-side formatter. This pin is normally
tied to TCLKI.
Signal Name:
TPOSI
Signal Description:
Signal Type:
Transmit Positive Data Input
Input
Sampled on the falling edge of TCLKI for data to be transmitted out onto the T1 line. Can be internally
connected to TPOSO by tying the LIUC pin high. TPOSI and TNEGI can be tied together in NRZ
applications.
Signal Name:
TNEGI
Signal Description:
Signal Type:
Transmit Negative Data Input
Input
Sampled on the falling edge of TCLKI for data to be transmitted out onto the T1 line. Can be internally
connected to TNEGO by tying the LIUC pin high. TPOSI and TNEGI can be tied together in NRZ
applications.
Signal Name:
TCLKI
Signal Description:
Signal Type:
Transmit Clock Input
Input
Line interface transmit clock. Can be internally connected to TCLKO by tying the LIUC pin high.
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