TP3406中文资料DASL Digital Adapter for Subscriber Loops数据手册TI规格书

描述 Description

General Description
The TP3406 is a complete monolithic transceiver for data transmission on twisted pair subscriber loops. It is built on National’s double poly microCMOS process, and requires only a single a5 Volt supply. Alternate Mark Inversion (AMI) line coding, in which binary ‘1’s are alternately transmitted as a positive pulse then a negative pulse, is used to ensure low error rates in the presence of noise with lower emi radiation than other codes such as Bi-phase (Manchester).

特性 Features

Complete ISDN PBX 2-Wire Data Transceiver including:
■ 2 B plus D channel interface for PBX UÊ Interface
■ 144 kb/s full-duplex on 1 twisted pair using Burst Mode
■ Loop range up to 800 meters (Ý24AWG)
■ Alternate Mark Inversion coding with transmit filter and scrambler for low emi radiation
■ Adaptive line equalizer
■ On-chip timing recovery, no external components
■ Standard TDM interface for B channels
■ Separate interface for D channel
■ 2.048 MHz master clock
■ Driver for line transformer
■ 4 loop-back test modes
■ Single a5V supply
■ MICROWIRETM compatible serial control interface
■ Applications in:
   PBX Line Cards
   Terminals
   Regenerators
■ Available in 28-pin PLCC Package