VITESSE VSC8144QQ Datasheet

Product Summary

VSC8144

2.488Gb/s 4:1 SONET/SDH Transceiver with Integrated Clock Generator

Features

• Multi-Rate Transceiver for SONET OC-48, OC-24,
OC-12, OC-3, and Gigabit Ethernet Rates

• 4-Bit LV DS Low-Speed Interfa ce

• On-Chip PLL-Based Clock Generator

• High-Speed Clock Output

General Description

The VSC8144 is a S ONET/SDH co mpatible m ulti-ra te transcei ver with integrate d clock gene rator for use in
SONET/SDH systems operating at OC-48, OC-24, OC-12, OC-3, or Gigabit Ethernet data rates. The internal clock
generator uses a Phase Locked Loop (PLL) to multiply either a 77.76MHz, 155.52MHz, or 622.08MHz reference clock
for internal logic and output retiming. The 4-bit parallel LVDS interface incorporates an on-board FIFO to address loop
timing design issues. Facility and Equipment Loopbacks can be configured separately or simultaneously. The device
operates with 2.5 W maximum power and is packaged in a thermally enhanced 100-pin PQFP package.

Block Diagram

• Equipment, Facility and Split Loopback Modes

• Exceeds Bellcore Jitter Performance

• Single 3.3V Power Supply

• 2.5 W Maximum Power Dissipation

• 100-Pin PQFP (14x14x2mm)

High-Speed Data

High-Speed Clock

High-Speed Loopback

OC-48/12/3 GbE Control

High-Speed Data

High-Speed Clock

Order Informatio n

Product Package

DEMUX

Test

MUX

VSC8144

CMU

FIFO

4

Low-Speed Data

Low-Speed Clock

Low-Speed Loopback

Reference Clock

4

Low-Speed Data

Low-Speed Clock

Low-Speed Clock

VSC8144QQ 100-Pin PQFP

Notice

Vitesse Semiconductor Corporation (“Vitesse”) provides this document for informational purposes only. This document contains pre-production information about Vit­esse products in their concept, development and/or testing phase. All information in this document, including descriptions of features, functions, performance, technical
specifications and availability, is subject to change without notice at any time. Nothing contained in this document shall be construed as extending any warr ant y or
promise, express or implied, that any Vitesse product will be available as described or will be suitable for or will accomplish any particular task.

Vitesse products are not intended for use in life support appliances, devices or systems. Use of a Vitesse product in such applications without written consent is prohib­ited.

PS031601.3.1

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