PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
,VVXHꢀꢁ
AAL1 SAR Processor
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number of overruns
number of pointer parity errors
number of misinserted cells
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A SUPPRESS_TRANSMISSION bit has been added (refer to section “IDLE_CONFIG
Word Format” on page 139) to temporarily disable transmission while continuing to
schedule cells.
Two new control bits have been added to allow queues on an SDF-MF line to be
configured in SDF-FR mode. One bit (refer to “T_CHAN_NO_SIG” on page 136) is for
the transmit direction, and one bit (refer to “R_CHAN_NO_SIG” on page 157) is for the
receive direction. This is the same as setting up individual queues in SDF-FR mode.
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A new E1 mode has been added to allow a 24-frame multiframe instead of a 16-frame
multiframe. In this mode, signaling is updated every 24 frames. When processing cells,
the signaling data will appear after N × 24 bytes of data, where N is the number of DS0s in
the queue.
The SRTS code from the Field Programmable Gate Array (FPGA) has been incorporated
into the chip for each line. There is also a clock multiplexer that enables the AAL1gator II
to generate the TL_CLK based on either the RL_CLK, a nominal E1 or T1 clock, or a
synthesized clock based on the received SRTS.
The R_INCORRECT_SNP counter (refer to “R_INCORRECT_SNP Word Format” on
page 158) has been changed to conform to the Circuit Emulation Service (CES) MIB. That
is, all cells with an incorrect SNP will be counted, regardless of whether or not the SN was
corrected.
The R_SEQUENCE_ERR counter (refer to “R_SEQUENCE_ERR Word Format” on
page 157) has been changed to conform to the CES MIB. That is, only transitions from the
SYNC state to the OUT_OF_SEQUENCE state are counted, as specified in ITU-T
Recommendation I.363.1.
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Both E1 and T1 lines can be supported at the same time.
The scan string for the current scan order has changed.
The following four pins have been added:
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PHY_ENABLE (refer to page 81)
TPHY_ADDR (refer to page 83)
RPHY_ADDR (refer to page 83)
TLCLK_OUTPUT_EN (refer to page 87)
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The following software fields have been added or expanded:
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In the COMP_LIN_REG (refer to section 7.4.2 “COMP_LIN_REG” starting on
page 125), added the following fields:
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PMC [ PMC-SIERRA, INC ]
