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A rate adaption coprocessor for terminal adapters and U-interface modems

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4 Author(s)
Busschaert, H.J. ; Alcatel Bell Telephone, Antwerp, Belgium ; Reusens, P.P. ; Rabaey, Dirk H. ; Verpooten, L.M.

A multistandard rate adapter coprocessor chip, designed for use in ISDN terminal adapters and U-interface modems, is presented. It provides a compact, low-power protocol converter to connect asynchronous (up to 19200 b/s) and synchronous (up to 64 kb/s) data terminal equipment with any digital 64-kb/s network. The multistandard rate adapter chip was developed in a 2-μm CMOS technology using a hierarchical design methodology. The rate adapter is the cornerstone of a 144-kb/s U-interface modem and a major breakthrough for the next-generation multistandard terminal adapter

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:24 ,  Issue: 6 )