PMC-Sierra, Inc.
PM5356
S/UNI-622-MAX
DATASHEET
S/UNI-622-MAX
PMC-1980589
ISSUE 5
SATURN USER NETWORK INTERFACE (622-MAX)
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Frames to and de-scrambles the received STS-12c/STM-4-4c stream.
Optionally frames to and de-scrambles a received STS-3c/STM-1 stream.
Interprets the received payload pointer (H1, H2) and extracts the STS-12c/STM-4-4c or STS-3c/STM-
1 synchronous payload envelope and path overhead.
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Filters and captures the automatic protection switch channel (APS) bytes in readable registers and
detects APS byte failure.
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Captures and de-bounces the synchronization status (S1) nibble in a readable register.
Detects signal degrade (SD) and signal fail (SF) threshold crossing alarms based on received B2
errors.
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Detects loss of signal (LOS), out of frame (OOF), loss of frame (LOF), line alarm indication signal
(AIS-L), line remote defect indication (RDI-L), loss of pointer (LOP), path alarm indication signal (AIS-
P), path remote defect indication (RDI-P), path extended remote defect indicator (extended RDI-P).
Counts received section BIP-8 (B1) errors, received line BIP-96 (B2) errors, line remote error
indicates (REI-L), received path BIP-8 (B3) errors and path remote error indications (REI-P) for
performance monitoring purposes.
1.3
The Receive ATM Processor
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Extracts ATM cells from the received STS-12c/STM-4-4c or STS-3c/STM-1 payload using ATM cell
delineation.
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Provides ATM cell payload de-scrambling.
Performs header check sequence (HCS) error detection and correction, and idle/unassigned cell
filtering.
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Detects out of cell Delineation (OCD) and loss of cell delineation (LCD) alarms.
Counts number of received cells, idle cells, errored cells and dropped cells.
Provides a UTOPIA Level 2 compliant 16-bit wide datapath interface (clocked up to 50 MHz) with
parity support to read extracted cells from an internal four-cell FIFO buffer.
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Provides a UTOPIA Level 3 compatible 8-bit wide datapath interface (clocked up to 100 MHz) with
parity support to read extracted cells from an internal four-cell FIFO buffer.
1.4
The SONET Transmitter
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Synthesizes the 622.08 MHz transmit clock from a 77.76 MHz reference.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
2
PMC [ PMC-SIERRA, INC ]
