PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
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Provides a digitally programmable pulse shape extending up to 5 transmitted bit periods for custom
long haul pulse shaping applications.
Provides line outputs that are current limited and may be tristated for protection or in redundant
applications.
Provides a digital phase locked loop for generation of a low jitter transmit clock complying with all jitter
attenuation, jitter transfer and residual jitter specifications of AT&T TR 62411 and ETSI TBR 12 and
TBR 13.
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Provides a FIFO buffer for jitter attenuation and rate conversion in the transmit path.
Allows bipolar violation (BPV) transparent operation for error restoring regenerator applications.
Allows bipolar violation (BPV) insertion for diagnostic testing purposes.
Supports all ones transmission for alarm indication signal (AIS) generation.
Accepts either dual rail or single rail DS-1/E1 signals or parallel data from the SBI interface.
Performs B8ZS or AMI encoding when processing a single rail or SBI-sourced DS-1 signal and HDB3
or AMI encoding when processing a single rail or SBI-sourced E1 signal.
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A pseudo-random sequence user selectable from 211 –1, 215 –1 or 220 –1, may be inserted into or
detected from the T1 or E1 stream in either the receive or transmit directions.
Detects violations of the ANSI T1.403 12.5% pulse density rule over a moving 192-bit window and
optionally stuffs ones to maintain minimum ones density.
Supports transmission of a programmable unframed inband loopback code sequence.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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PMC [ PMC-SIERRA, INC ]
