RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
• Cell dropped due to sequence number processing algorithm
• Valid pointer was received
• Pointer parity error detected
• SRTS resume from an underrun condition
• SRTS underrun occurred
• Resume occurred from an underrun condition
• Pointer reframe occurred
• Overrun condition detected
• Cell received while in an underrun
• Supports AAL0 mode, selectable on a per VC basis.
• Provides system side loopback support. When enabled and the
incoming VCI matches the programmable loopback VCI, the cell
received on the Receive UTOPIA interface is looped back to the
Transmit UTOPIA interface. Alternatively the UTOPIA interface can be
put into remote loopback mode where all incoming cells are looped
back out. Provides line side loopback, enabled on a per queue basis,
which can loop a single channel or any group of channels which can
be mapped to a single queue.
• Provides a patented frame based calendar queue service algorithm
with anti-clumping add-queue mechanism that produces minimal Cell
Delay Variation (CDV). In UDF mode uses non-frame based
scheduling to optimize CDV.
• Queues are added by making entries into an add-queue FIFO to
minimize queue activation overhead. An offset can be configured
when queue is added to distribute cell build times to minimize CDV
due to clumping.
• Provides single maskable, open-collector interrupt with master
interrupt register to facilitate interrupt processing. The master interrupt
register indicates the following conditions each of which can be
masked:
• Error/status condition with the AAL1 block
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
23
PMC [ PMC-SIERRA, INC ]
