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PM73121 Datasheet(PDF) 19 Page - PMC-Sierra, Inc |
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PM73121 Datasheet(HTML) 19 Page - PMC-Sierra, Inc |
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19 / 223 page  PMC-Sierra, Inc. PM73121 AAL1gator II PMC-980620 ,VVXH AAL1 SAR Processor Data Sheet QSPQSD@U6S`Ã6I9Ã8PIAD9@IUD6GÃUPÃQH8TD@SS6ÃDI8Ã6I9ÃAPSÃDUTÃ8VTUPH@ST¶ÃDIU@SI6GÃVT@ Receive Cell Interface Features • Provides an ATM-layer or PHY-layer 33 MHz UTOPIA interface. Both SPHY and MPHY modes are supported. • Provides per-VC queues. • Provides per-VC CDV tolerance settings. • Provides per-VC partially filled cell length settings. • Provides a supervisory receive queue for OAM cells. • Verifies and corrects sequence numbers in accordance with ITU-T Recommendation I.363.1. • Processes sequence numbers in accordance with the “Fast SN Algorithm”, as specified in the ITU-T Recommendation I.363.1. • Maintains bit integrity through individual errored cells or up to six lost cells. Takes into account pointer bytes. • During underruns, can output fixed, pseudorandom, or old data. • Provides processor interrupts for OAM cell receptions. • Provides a multiplexed interface to external receive Phase-Locked Loops (PLLs) for SRTS clock recovery for unstructured modes or adaptive clock recovery. Statistics Features • Counts invalid Cyclic Redundancy Check (CRC) values for sequence numbers. • Counts OAM cells and dropped OAM cells. • Counts data cells transmitted per VC. • Counts conditioned data cells transmitted per VC. • Counts cells not transmitted due to line resynchronization per VC. • Counts cells received, dropped, lost, or misinserted per VC. • Counts cells with incorrect Sequence Number (SN) or incorrect Sequence Number Protection (SNP). • Counts underrun occurrences per VC. • Counts overrun occurrences per VC. • Counts pointer reframes and pointer parity errors per VC. |
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