PM4351(2001) Просмотр технического описания (PDF) - PMC-Sierra

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PM4351
(Rev.:2001)

Combined E1/T1/J1 Transceiver/Framer

PMC-Sierra 

STANDARD PRODUCT

DATA SHEET

PMC-1970624

ISSUE 10

PM4351 COMET

COMBINED E1/T1 TRANSCEIVER

• Provides an integral pattern generator that may be programmed to generate

common pseudo-random or repetitive sequences towards the backplane.

• Provides tristateable single-rail PCM and signaling data outputs for

1.544 Mbit/s, 2.048 Mbit/s, 4.096 Mbit/s or 8.192 Mbit/s backplane buses.

1.2 Transmitter section:

• Supports transfer of transmitted single rail PCM and signaling data from

1.544 Mbit/s, 2.048 Mbit/s, 4.096 Mbit/s or 8.192 Mbit/s backplane buses.

• Generates DSX-1 shorthaul and DS-1 longhaul pulses with programmable

pulse shape compatible with AT&T, ANSI and ITU requirements.

• Generates E1 pulses compliant to G.703 recommendations.

• Provides a digitally programmable pulse shape extending up to 5 transmitted

bit periods for custom long haul pulse shaping applications.

• Provides line outputs which are current limited and may be tristated for

protection or in redundant applications.

• Provides an alternative digital interface for external line interface units.

• 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.

• Provides a FIFO buffer for jitter attenuation and rate conversion in the

transmit path.

• Provides a two-frame payload slip buffer to allow independent backplane and

line timing.

• Provides an integral pattern generator that may be programmed to generate

common pseudo-random or repetitive sequences. The programmed

sequence may be inserted in the entire frame, or on an NxDS0 basis.

• Provides an integral pattern detector that may be programmed to detect

common pseudo-random or repetitive sequences from the backplane.

• Transmits G.704 basic and CRC-4 multiframe formatted E1 signals or D4, SF

or ESF formatted DSX/DS-1 signals.

PROPRIETARY AND CONFIDENTIAL

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