RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
• Supports n x 64 (consecutive channels) and m x 64 (non-consecutive
channels) structured data format.
• Provides transparent transmission of Common Channel Signaling
(CCS) and Channel Associated Signaling (CAS). Provides for
termination of CAS signaling.
• Allows the CAS nibble to be coincident with either the first or second
nibble of the data.
• Provides per-VC data and signaling conditioning in the transmit cell
direction and per DS0 data and signaling conditioning in the transmit
line direction. Data and signaling conditioning can be individually
enabled. Includes DS3 AIS conditioning support in both directions.
Transmit line conditioning options include programmable byte pattern,
pseudo-random pattern or old data. Conditioning automatically occurs
on underruns.
• In Cell Transmit direction, provides per-VC configuration of time slots
allocated, CAS signaling support, partial cell size, data and signaling
conditioning, ATM Cell header definition. Generates AAL1 sequence
numbers, pointers and SRTS values in accordance with ITU-T I.363.1.
Multicast connections are supported.
• In Cell Transmit direction provides counters for:
• Conditioned cells transmitted for each queue
• Cells which were suppressed for each queue
• Total number of cells transmitted for each queue
• In Cell Receive direction, provides per-VC configuration of time slots
allocated, CAS signaling support, partial cell size, sequence number
processing options, cell delay variation tolerance buffer depth,
maximum buffer depth. Processes AAL1 headers in accordance with
ITU-T I.363.1.
• In Cell Receive direction, supports the Fast Sequence Number
processing algorithm on all types of connections and Robust
Sequence Number processing on Unstructured Data Format (UDF)
connections. Cells are inserted/dropped to maintain bit integrity on
lost or misinserted cells. Bit integrity is maintained through any single
errored cell or up to six lost cells. Bit integrity can also optionally be
maintained even if an underrun occurs. Pointer bytes, signaling bytes,
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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PMC [ PMC-SIERRA, INC ]
