VSC8144中文資料VITESSE數(shù)據(jù)手冊PDF規(guī)格書

General Description

The VSC8144 is a SONET/SDH compatible multi-rate transceiver with integrated clock generator 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.

Features

? Multi-Rate Transceiver for SONET OC-48, OC-24,

OC-12, OC-3, and Gigabit Ethernet Rates

? 4-Bit LVDS Low-Speed Interface

? On-Chip PLL-Based Clock Generator

? High-Speed Clock Output

? 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)