An analog telephone subscriber chipset integrating 16 lines with fully programmable central office impedance

Author

Moons, E. ; Langhe, M. De ; Kiss, L. ; De Beeck, E. Op ; Sevenhans, J.

Author_Institution

Alcatel Telecom, Antwerp, Belgium

fYear

1996

fDate

9-11 Oct 1996

Firstpage

180

Lastpage

188

Abstract

This paper describes the chipset (3 ASIC´s) for an analog telephone subscriber line circuit: a 16 channel digital circuit performing speech band filtering, echo cancellation, A-law/μ-law coding and controlling interface, an 8 channel analog/digital circuit performing the A/D and D/A conversion with analog filtering, and an analog high voltage BICMOS circuit covering the SLIC (Subscriber Line Interface Circuit) function with special attention for the integration of software programmable synthesized AC and DC impedances

Keywords

BiCMOS analogue integrated circuits; application specific integrated circuits; electric impedance; subscriber loops; A-law/μ-law coding; A/D conversion; ASIC; D/A conversion; SLIC; analog filtering; analog telephone subscriber chipset; analog/digital circuit; digital circuit; echo cancellation; high voltage BICMOS circuit; interface control; programmable central office impedance; speech band filtering; BiCMOS integrated circuits; Digital circuits; Digital filters; Echo cancellers; Filtering; Software performance; Speech coding; Speech synthesis; Telephony; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Systems in Silicon, 1996. Proceedings., Eighth Annual IEEE International Conference on

Conference_Location

Austin, TX

ISSN

1063-2204

Print_ISBN

0-7803-3639-9

Type

conf

DOI

10.1109/ICISS.1996.552425

Filename

552425