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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
8
SBI Add bus depth check error
SBI Drop bus FIFO overflow or underrun
SBI Drop bus parity error
SBI Drop bus depth check error
SBI Drop bus C1FP resync
SBI Alarm detected
Provides a 16-bit microprocessor interface to internal registers, and two
external 256K x 16(18) (10 ns) Pipelined Single-Cycle Deselect Synchronous
SRAMs, or Synchronous ZBT SRAMs.
Provides a transmit buffer which can be used for Operations, Administration
and Maintenance (OAM) cells as well as any other user-generated cells such
as AAL5 cells for ATM signaling. A corresponding receive buffer exists for the
reception of OAM cells or non-AAL1 data cells.
Includes an internal E1/T1 clock synthesizer for each line which can generate
a nominal E1/T1 clock or be controlled via Synchronous Residual Time
Stamp (SRTS) clock recovery method in Unstructured Data Format (UDF)
mode or a programmable weighted moving average adaptive clocking
algorithm. DS3 and E3 SRTS or adaptive clocking is supported using an
external clock synthesizer and the clock control port.
The clock synthesizers can also be controlled externally to provide
customization of SRTS or adaptive algorithms. SRTS can also be disabled
via a hardware input. Adaptive and SRTS information is output to a port for
external processing for both low speed and high speed mode, if needed.
Buffer depth is provided in units of bytes. The synthesizer can be set to 256
discrete frequencies between either +/-100 ppm for E1 or +/-200 ppm for T1.
Low-power 2.5 Volt CMOS technology with 3.3 Volt, 5 Volt tolerant I/O.
352-pin super ball grid array (SBGA) package.