PM4332 データシートの表示（PDF） - PMC-Sierra

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PM4332

HIGH DENSITY 32 CHANNEL T1/E1/J1 FRAMER

PMC-Sierra 

PRELIMINARY

DATA SHEET

PMC-2011402

ISSUE 1

PM4332 TE-32

HIGH DENSITY 32 CHANNEL T1/E1/J1 FRAMER

• Provides minimum ones density through Bell (bit 7), GTE or “jammed bit 8”

zero code suppression on a per-DS0 basis. Provides a 128 byte buffer to

allow insertion of the facility data link using the host interface.

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

signal in SF, SLC96 and ESF formats.

• Provides transparency for the F-bit to support SLC96 data link insertion.

• Autonomously transmits an ESF Performance Report Message each second.

• Provides a digital phase locked loop for generation of a low jitter transmit

clock.

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

transmitter.

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

• A pseudo-random sequence user selectable from 27 –1, 211 –1, 215 –1 or 220 –

1, may be inserted into the T1 stream in either the ingress or egress

directions. The pseudo-random sequence can be inserted into the entire T1 or

any combination of DS0s within the framed T1.

Each one of 32 E1 transmitter sections:

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

transmit path.

• Transmits G.704 basic and CRC-4 multiframe formatted E1.

• 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 a digital phase locked loop for generation of a low jitter transmit

clock.

• A pseudo-random sequence user selectable from 27 –1, 211 –1, 215 –1 or 220 –

1, may be inserted into the E1 stream in either the ingress or egress

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

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