PMC-Sierra, Inc.
PM5356
S/UNI-622-MAX
DATASHEET
S/UNI-622-MAX
PMC-1980589
ISSUE 5
SATURN USER NETWORK INTERFACE (622-MAX)
connected to its Receive Path Overhead Processor (RPOP). When DPLE is logic one,
loopback is enabled. Under this operating condition, the S/UNI-622-MAX continues to
operates normally in the transmit direction. When DPLE is logic zero, the S/UNI-622-MAX
operates normally.
LOOPT:
The LOOPT bit selects the source of timing for the transmit section of the channel. When
LOOPT is a logic zero, the transmitter timing is derived from input REFCLK (Clock Synthesis
Unit). When LOOPT is a logic one, the transmitter timing is derived from the recovered clock
(Clock Recovery Unit). The SDLE, SLLE or LOOPT bits should not be set high
simultaneously.
SDLE:
The SDLE bit enables the serial diagnostic loopback. When SDLE is a logic one, the transmit
serial stream on the TXD+/- differential outputs is internally connected to the received serial
RXD+/- differential inputs. Under this operating condition, the S/UNI-622-MAX continues to
operates normally in the transmit direction. The SDLE, SLLE or LOOPT bits should not be
set high simultaneously.
SLLE:
The SLLE bit enables the S/UNI-622-MAX line loopback mode when the device is configured
for 622.08 Mbit/s serial line interface mode of operation. When SLLE is a logic one, the
recovered data from the receive serial RXD+/- differential inputs is mapped to the TXD+/-
differential outputs. Under this operating condition, the S/UNI-622-MAX continues to
operates normally in the receive direction. The SDLE, SLLE or LOOPT bits should not be set
high simultaneously.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
71
PMC [ PMC-SIERRA, INC ]
