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S/UNI-QUAD
PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
3
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Provides a differential TTL serial interface (can be adapted to PECL levels) at
155.52 Mbit/s.
•
Provides a single transmit frame pulse input across the four channels to align
the transport frames to a system reference.
•
Provides a single transmit byte clock (divide by eight of the synthesized line
rate clock) to provide a timing reference for the transmit outputs.
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Optionally inserts register programmable APS (K1, K2) and synchronization
status (S1) bytes.
•
Optionally inserts path alarm indication signal (PAIS), path remote defect
indication (PRDI), line alarm indication signal (LAIS) and line remote defect
indication (LRDI).
•
Inserts path BIP-8 codes (B3), path far end block error (G1) indications, line
BIP-24 codes (B2), line far end block error (M1) indications, and section BIP-8
codes (B1) to allow performance monitoring at the far end.
•
Scrambles the transmitted STS-3c (STM-1) stream and inserts the framing
bytes (A1, A2).
•
Inserts ATM cells into the transmitted STS-3c (STM-1) synchronous payload
envelope.
1.5
The Transmit ATM Processor
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Provides idle/unassigned cell insertion.
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Provides HCS generation/insertion, and ATM cell payload scrambling.
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Counts number of transmitted and idle cells.
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Provides a synchronous 8-bit wide, four cell FIFO buffer.