PM4354 Просмотр технического описания (PDF) - PMC-Sierra

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PM4354

FOUR CHANNEL COMBINED E1/T1/J1 TRANSCEIVER/FRAMER

PMC-Sierra 

RELEASED

PM4354 COMET-QUAD

DATASHEET

PMC-1990315

ISSUE 6

FOUR CHANNEL COMBINED E1/T1/J1

TRANSCEIVER / FRAMER

• 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.

• 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.

• A pseudo-random sequence user selectable from 211 –1, 215 –1 or220 –1, may be inserted into or

detected from the T1 or E1 stream in either the backplane receive or backplane transmit directions.

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

DSX/DS-1 signals.

• Transmits the “Japanese Yellow” alarm. Transmits TTC JT-G704 multiframe formatted J1 signals.

Supports the alternate ESF CRC-6 calculation for Japanese applications.

• Supports unframed mode and framing bit, CRC, or data link by-pass.

• Provides signaling insertion, programmable idle code substitution, digital milliwatt code substitution,

and data inversion on a per channel basis.

• Provides trunk conditioning which forces programmable trouble code substitution and signaling

conditioning on all channels or on selected channels.

• Provides minimum ones density through Bell (bit 7), GTE or DDS zero code suppression on a per

channel basis.

• 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.

• Allows insertion of framed or unframed in-band loopback code sequences.

• Allows insertion of a data link in ESF mode. Optionally inserts a datalink in the E1 national use bits.

• Supports 4-bit codeword insertion in the E1 national use bits as specified in ETS 300 233

• Inserts, from an H-MVIP bus, up to three HDLC links to support the D-channel for ISDN Primary Rate

Interfaces and the C-channels for V5.1/V5.2 interfaces.

• Supports transmission of the alarm indication signal (AIS) and the Yellow alarm signal. Supports

“Japanese Yellow” alarm generation.

• Provides ESF bit-oriented code generation.

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC. AND FOR ITS CUSTOMERS’ INTERNAL USE

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