
DATASHEET
PM5349 S/UNI-QUAD
ISSUE 6 | SATURN USER NETWORK INTERFACE | |
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RXDINV:
The RXDINV bit selects the active polarity of the RXD+/- signals. The default configuration selects RXD+ to be active high and RXD- to be active low. When RXDINV is set to logic one, RXD+ to be active low and RXD- to be active high.
TFPI_EN:
The TFPI_EN bit controls the framing alignment in the transmit direction. When TFPI_EN is set to logic one the transmit SONET/SDH framing is aligned to a master (available to all four channels) framing pulse counter, which can also be aligned to the TFPI device input. When TFPI_EN is set to logic zero the transmit framing alignment is arbitrary. External framing (TFPI_EN set to logic one) shall only be used when the channel is in self- timed mode. TFPI_EN should always be set to logic zero when the channel is
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