DATA SHEET
PMC-930303
ISSUE 6
PM5343 STXC
SONET/SDH TRANSPORT OVERHEAD TRANSCEIVER
1 FEATURES
• Monolithic SONET/SDH Transport Overhead Terminating Transceiver for use
in STS-1, STS-3 or STM-1 interface applications, operating at serial interface
speeds of up to 155.52 Mbit/s.
• Provides termination for SONET Section and Line, and SDH Regenerator
Section and Multiplexer Section transport overhead.
• Companion to the PM5344 SPTX SONET/SDH Path Terminating Transceiver.
• Operates in STS-1 and STS-3 bit-serial (PECL/TTL I/O) and byte-serial (TTL
I/O) modes. Provides independent control of the transmit and receive
operating modes for asymmetrical bandwidth applications.
• Frames to the STS-1 or STS-3 (STM-1) receive stream and inserts the
framing bytes (A1, A2) and the STS identification bytes (J0) into the transmit
stream; Descrambles the receive stream and scrambles the transmit stream.
• Calculates and compares the bit interleaved parity error detection codes (B1,
B2) for the receive stream and calculates and inserts B1 and B2 in the
transmit stream.
• Accumulates near end errors (B1, B2) and far end errors (M1) and inserts
line remote error indications (REI) into the Z2 growth byte based on received
B2 errors.
• Detects signal degrade (SD) and signal fail (SF) threshold crossing alarms
based on received B2 errors.
• Optionally inserts the line BIP-8 error detection code into each of the
constituent STS-1s (B2 bytes) of the transmit STS-1/3 stream.
• Extracts and serializes the order wire channels (E1, E2), the data
communication channels (D1-D3, D4-D12) and the section user channel (F1)
from the receive stream, and inserts the corresponding signals into the
transmit stream.
• Extracts and serializes the automatic protection switch (APS) channel (K1,
K2) bytes, filtering and extracting them into internal registers. Inserts the APS
channel into the transmit stream.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 1