Datenblatt-Suchmaschine für elektronische Bauteile |
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TP3406V Datenblatt(PDF) 1 Page - National Semiconductor (TI) |
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TP3406V Datenblatt(HTML) 1 Page - National Semiconductor (TI) |
1 / 16 page TLH11725 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 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 radia- tion than other codes such as Bi-phase (Manchester) Full-duplex transmission at 144 kbs is achieved on a single twisted wire pair using a burst-mode technique (Time Com- pression 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 MasterSlave 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 pro- grammed via the Microwire Control Interface A 2048 MHz clock which may be synchronized to the sys- tem 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 kbs 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 2048 MHz master clock Y Driver for line transformer Y 4 loop-back test modes Y Single a5V supply Y MICROWIRETM compatible serial control interface Y Applications in PBX Line Cards Terminals Regenerators Y Available in 28-pin PLCC Package Block Diagram TLH11725 – 1 TRI-STATE is a registered trademark of National Semiconductor Corporation MICROWIRETM is a trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
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