![](http://datasheet.mmic.net.cn/330000/PM73122_datasheet_16444367/PM73122_31.png)
RELEASED
PM73122 AAL1GATOR-32
DATASHEET
PMC-1981419
ISSUE 7
32 LINK CES/DBCES AAL1 SAR PROCESSOR
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
6
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. In
addition, four internal cell generation engines work in parallel to further insure
low 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 one of four AAL1 blocks
Ram parity error