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TP3406

Part Number	TP3406
Manufacturer	National Semiconductor
Description	DASL Digital Adapter for Subscriber Loops
Published	Apr 16, 2005
Detailed Description	TP3406 DASL Digital Adapter for Subscriber Loops November 1992 TP3406 DASL Digital Adapter for Subscriber Loops Genera...
Datasheet	TP3406 PDF File

Overview

TP3406 DASL Digital Adapter for Subscriber Loops November 1992 TP3406 DASL Digital Adapter for Subscriber Loops 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 a 5 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) Full-duplex transmission at 144 kb s is achieved on a single twisted wire pair using a burst-mode technique (Time Compression Multiplexed) Thus the device operates as an ISDN ‘U’ Interface for short loop applications typically in a PBX environment providing transmission for 2 B channels and 1 D channel On 24 cable the range is up to 800 meters System timing is based on a Master Slave configuration with the line card end being the Master which controls loop timing and synchronisation All timing sequences necessary for loop activation and de-activation are generated on-chip Selection of Master and Slave mode operation is programmed via the Microwire Control Interface A 2 048 MHz clock which may be synchronized to the system clock controls all transmission-related timing functions Features Complete ISDN PBX 2-Wire Data Transceiver including Y 2 B plus D channel interface for PBX U Interface Y 144 kb s full-duplex on 1 twisted pair using Burst Mode Y Loop range up to 800 meters ( 24AWG) Y Alternate Mark Inversion coding with transmit filter and scrambler for low emi radiation Y Adaptive line equalizer Y On-chip timing recovery no external components Y Standard TDM interface for B channels Y Separate interface for D channel Y 2 048 MHz master clock Y Driver for line transformer Y 4 loop-back test modes Y Single a 5V supply Y MICROWIRE TM compatible serial control interface Y Appli...

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