PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
1.2
SONET Section and Line / SDH Regenerator and Multiplexer Section
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Frames to the SONET/SDH receive stream and inserts the framing bytes (A1, A2) and the section
trace byte (J0) into the transmit stream; descrambles the received stream and scrambles the transmit
stream.
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Calculates and compares the bit interleaved parity (BIP) error detection codes (B1, B2) for the receive
stream. 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 M1 byte based on
received B2 errors.
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Detects signal degrade (SD) and signal fail (SF) threshold crossing alarms based on received B1
errors.
Extracted and optionally inserts on dedicated pins the SONET/SDH transport overhead for an STS-
48c/STM-16c frame.
Extracts and serializes on dedicated pins the data communication channels (D1-D3, D4-D12) and
inserts the corresponding signals into the transmit stream.
Extracts and filters the automatic protection switch (APS) channel (K1, K2) bytes into internal
registers. Inserts the APS channel into the transmit stream.
Extracts and filters the synchronization status message (S1) byte into an internal register for the
receive stream. Inserts the synchronization status message (S1) byte into the transmit stream.
Extracts a 64 byte (Bellcore compatible) or 16 byte (ITU compatible) section trace (J0) message using
an internal register bank for the receive stream. Detects an unstable message or mismatch message
with an expected message. Provides access to the accepted message via the microprocessor port.
Inserts a 64 byte or 16 byte section trace (J0) message using an internal register bank for the
transmit stream.
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Detects loss of signal (LOS), out of frame (OOF), loss of frame (LOF), line remote defect indication
(RDI-L), line alarm indication signal (AIS-L), and protection switching byte failure alarms on the
receive stream.
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Configurable to force Line AIS in the transmit stream.
Provides automatic transmit line RDI insertion following detection of various received alarms (LOS,
LOF, LAIS, SD, SF, STIM, STIU).
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Provides automatic DROP bus line AIS insertion following detection of various received alarms (LOS,
LOF, LAIS, SD, SF, STIM, STIU).
Support Automatic Protection Switching (APS) via a serial 4x777.76 LVDS mate protection port.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
2
PMC [ PMC-SIERRA, INC ]
