Title :
A viable multi-standard rate adapter chip for ISDN communications
Author :
Busschaert, Hans J. ; Reusens, Peter P. ; Van Camp, Ronny M. ; Gouwy, Christiaan M.
Author_Institution :
Alcatel Bell Telephone, Antwerp, Belgium
Abstract :
A multistandard rate adapter coprocessor chip designed using 2 μm CMOS technology for use in integrated services digital network (ISDN) terminal adapters and U-interface modems is presented. It provides a compact, low-power protocol converter to connect asynchronous (up to 19200-bit/s) and synchronous (up to 64-kbit/s) data terminal equipment with any digital 64-kbit/s network. The connection to the ISDN is established through an S-interface or a U-interface circuit. This rate adapter is the cornerstone of a 144-kbit/s U-interface modem and a major breakthrough for the next-generation multistandard terminal adapter
Keywords :
CMOS integrated circuits; ISDN; data communication equipment; protocols; standards; 144 kbit/s; 19200 bit/s; 2.0 micron; 64 kbit/s; CMOS technology; ISDN terminal adapters; S-interface; U-interface modems; asynchronous data terminal equipment; integrated services digital network; low-power protocol converter; multistandard rate adapter coprocessor chip; multistandard terminal adapter; synchronous data terminal equipment; Circuits; Communication standards; Converters; Coprocessors; ISDN; Modems; Protocols; Telephony; Very large scale integration;
Conference_Titel :
Digital Communications, 1990. Electronic Circuits and Systems for Communications. Proceedings, 1990 International Zurich Seminar on
Conference_Location :
Zurich
DOI :
10.1109/DIGCOM.1990.129374
