PM5347S Datasheet, PDF (101/302 Pages) PMC-Sierra, Inc – SATURN USER NETWORK INTERFACE PLUS

PM5347 S/UNI-PLUS
DATA SHEET
PMC-941033
ISSUE 6
SATURN USER NETWORK INTERFACE PLUS
of the loopback point continue to operate normally. For example line AIS may
be inserted in the transmit stream upstream of the loopback point using the
TSOP Control register.
SDLE:
The SDLE bit enables the serial diagnostic loopback. When SDLE is a logic
one, the transmit serial stream is connected to the receive stream. The SDLE
and the LLE bits should not be set high simultaneously.
LLE:
The LLE bit enables the S/UNI-PLUS line loopback. When LLE is a logic one,
RXD+ and RXD- are connected internally to TXD+ and TXD- respectively.
The SDLE and the LLE bits should not be set high simultaneously.
RXDINV:
The RXDINV bits select the polarity of the RXD+/- signals. The default
configuration selects RXD+ (RXD-) to be high (low) when the receive stream
contains a logic one. When RXDINV is a logic one, RXD+/- is inverted;
RXD+(RXD-) is low (high) when the receive stream contains a logic one.
RCAINV:
The RCAINV bits select the active polarity of the RCA signal. The default
configuration selects RCA to be active high, indicating that a received cell is
available when high. When RCAINV is a logic one, the RCA signal becomes
active low.
TCAINV:
The TCAINV bits select the active polarity of the TCA signal. The default
configuration selects TCA to be active high, indicating that a cell is available
in the transmit FIFO when high. When TCAINV is a logic one, the TCA signal
becomes active low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 85