PM4388-NI View Datasheet(PDF) - PMC-Sierra

Part Name

Description

MFG CO.

PM4388-NI

OCTAL T1 FRAMER

PMC-Sierra 

DATA SHEET

PMC-960840

ISSUE 5

PM4388 TOCTL

OCTAL T1 FRAMER

1 FEATURES

• Integrates eight T1 framers in a single device for terminating duplex DS-1

signals.

• Supports SF and ESF format DS-1 signals.

• Supports transfer of PCM data to/from 1.544 MHz system-side devices. Also

supports a fractional T1 system interface with independent ingress/egress

NxDS0 rates. Supports a 2.048 MHz system-side interface without external

clock gapping.

• Provides jitter attenuation in the receive and transmit directions.

• Provides per-DS0 line loopback and per link diagnostic and line loopbacks.

• Provides an integral pattern generator/detector that may be programmed to

generate and detect common pseudo-random or repetitive sequences. The

programmed sequence may be inserted/detected in the entire DS-1 frame, or

on an NxDS0 basis, in both the ingress and egress directions. May be

configured to transmit or detect in only the 7 most significant bits of selected

channels, in order to support fractional T1 loopback codes in an N x 56kbps

fractional T1 setup. Each framer possesses its own independent pattern

generator/detector, and each detector counts pattern errors using a 32-bit

saturating error counter.

• Provides robbed bit signaling extraction and insertion on a per-DS0 basis.

• Provides programmable idle code substitution, data and sign inversion, and

digital milliwatt code insertion on a per-DS0 basis.

• Software compatible with the PM4341A T1XC Single T1 Transceiver and the

PM4344 TQUAD Quad T1 Framer.

• Seamless interface to the PM8313 D3MX single chip M13 multiplex and to

the PM4314 QDSX Quad Line Interface.

• Provides an 8-bit microprocessor bus interface for configuration, control, and

status monitoring.

• Low power 3.3V CMOS technology with 5V tolerant inputs.

• Supports standard 5 signal P1149.1 JTAG boundary scan.

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

1

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