PM5343STXC Datasheet, PDF (21/198 Pages) PMC-Sierra, Inc – SONET/SDH TRANSPORT OVERHEAD TRANSCEIVER TELECOM STANDARD PRODUCT

DATA SHEET
PMC-930303
ISSUE 6
PM5343 STXC
SONET/SDH TRANSPORT OVERHEAD TRANSCEIVER
6 DESCRIPTION
The PM5343 SONET/SDH 155 Mbit/s Transport Overhead Terminating
Transceiver (STXC) processes the transport overhead (section overhead) of
STS-1, and STS-3 (STM-1) streams at 51.84 Mbit/s and 155.52 Mbit/s. The
STXC implements significant functions for a SONET/SDH compliant line
interface.
The STXC receives SONET/SDH frames via a bit serial or byte serial interface
and processes section (regenerator section) and line (multiplexer section)
overhead. It performs framing (A1, A2), descrambling, detects alarm conditions,
and monitors section and line path bit interleaved parity (B1, B2), accumulating
error counts at each level for performance monitoring purposes. B2 errors are
also monitored to detect signal fail and signal degrade threshold crossing alarms.
Line remote error indications (M1) are also accumulated. A 16 or 64 byte section
trace (J0) message may be buffered and compared against an expected
message.
The STXC also provides convenient access to all transport overhead bytes,
which are extracted and serialized on lower rate interfaces, allowing additional
external processing of overhead.
The STXC transmits SONET/SDH frames, via a bit serial or a byte serial
interface, and formats section and line overhead appropriately. It performs
framing pattern insertion (A1, A2), scrambling, alarm signal insertion, and
creates section and line bit interleaved parity (B1, B2) as required to allow
performance monitoring at the far end. Line remote error indications (M1) are
optionally inserted. A 16 or 64 byte section trace (J0) message may be inserted.
The STXC also provides convenient access to all transport overhead bytes,
which are optionally inserted from lower rate serial interfaces, allowing external
sourcing of overhead. The STXC also supports the insertion of a large variety of
errors into the transmit stream, such as framing pattern errors and bit interleaved
parity errors, which are useful for system diagnostics and tester applications.
Ring control ports provide the ability to pass control and status information
between mate transceivers.
The transmitter and receiver are independently configurable to allow for
asymmetric interfaces. The STXC is configured, controlled and monitored via a
generic 8-bit microprocessor bus interface.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 7