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

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производитель

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

• Available in a high density 80-pin MQFP (14 mm by 14 mm) package or an

81-ball CABGA (9 mm by 9 mm) package.

• Provides a -40°C to +85°C Industrial temperature operating range.

1.1 Receiver section:

• Guaranteed T1 signal reception for distances with up to 36 dB of cable

attenuation under production test conditions (772 kHz, VDD = 3.069V and

25°C) using PIC 22 gauge cable emulation.

• Guaranteed E1 signal reception for distances with up to 36 dB of cable

attenuation under production test conditions (1.024 MHz, VDD = 3.069V and

25°C) using PIC 22 gauge cable emulation.

• Recovers clock and data using a digital phase locked loop for high jitter

tolerance.

• Provides an alternative digital interface for applications without line interface

units.

• Frames to ITU-T G.704 basic and CRC-4 multiframe formatted E1 signals.

The framing procedures are consistent ITU-T G.706 specifications.

• Frames to DSX/DS-1 signals in D4, SF, ESF and SLC®96 formats.

• Frames to TTC JT-G704 multiframe formatted J1 signals. Supports the

alternate CRC-6 calculation for Japanese applications.

• Frames in the presence of and detects the “Japanese Yellow” alarm.

• Tolerates more than 0.3 UI peak-to-peak, high frequency jitter as required by

AT&T TR 62411 and Bellcore TR-TSY-000170.

• Detects violations of the ANSI T1.403 12.5% pulse density rule over a moving

192-bit window.

• Provides loss of signal detection as per ITU-T G.775 and ANSI T1.231. Red,

Yellow, and AIS alarm detection and integration are according to ANSI T1.231

specifications.

• Provides programmable in-band loopback activate and deactivate code

detection.

PROPRIETARY AND CONFIDENTIAL

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