NDLI: A 5V CMOS Programmable Acoustic Front-End for ISDN Terminals and Digital Telephone Sets

Content Provider	IEEE Xplore Digital Library
Author	Nicollini, G. Confalonieri, P. Crippa, C. Pernici, S. Dallavalle, C. Mazoyer, Y.
Copyright Year	1992
Description	Author affiliation: SGS-THOMSON Microelectronics, Grenoble, France (Mazoyer, Y.) \|\| SGS-THOMSON Microelectronics, Via Olivetti 2, 20041 Agrate Brianza, Milano, Italy - Tel. ++39 39 6035731 Fax ++39 39 6035060 (Nicollini, G.; Confalonieri, P.; Crippa, C.; Pernici, S.; Dallavalle, C.)
Abstract	A 5V programmable acoustic front-end IC for ISDN terminal and digital telephone set applications is presented. The chip performs PCM codec and filter functions fulfilling and exceeding all D3/D4 and CCITT specs. It implements the analog interfaces required for the speech (low noise microphone preamplifier, earpiece and loudspeaker drivers, sidetone, antilarsen control) and tone/ring/DTMF generation without external components. The device can be controlled by a microprocessor or a HDLC controller via a separate four wire control interface or by means of a serial control channel multiplexed with the PCM voice/data in a GCI compatible format. Chip area is 30 $mm^{2}$ in a 1.5¿ CMOS technology. Active/stand-by power consumption is 60mW/0.2mW from a single 5V supply.
Starting Page	229
Ending Page	232
File Size	1276963
Page Count	4
File Format	PDF
ISBN	8798423207
DOI	10.1109/ESSCIRC.1992.5468221
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-09-21
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	ISDN Telephone sets Phase change materials CMOS technology Acoustic applications Application specific integrated circuits Digital integrated circuits Telephony Codecs Filters
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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