VLSI implementation of the metering signal generator for switching system analog terminations

Author

Boarin, Gianluigi ; Chiappano, Gianni ; Maloberti, Franco ; Napolitano, S. ; Porta, Mauro

Author_Institution

Italtel SIT, Milano, Italy

fYear

1990

fDate

29 May-1 Jun 1990

Firstpage

430

Lastpage

433

Abstract

Describes a mixed analog-digital integrated circuit to be employed in a Central Exchange Switching System. This generates a proper shaped telephone metering pulse, according to the actual international standards, and sends it to eight subscribers. It has been designed with a cell-based approach and implemented with a 3 μm double poly single metal CMOS technology. 80% of the circuit uses digital and analog cells, while 20% has been specifically designed down to a transistor level. In order to reduce the power consumption two different supplies was used

Keywords

CMOS integrated circuits; VLSI; application specific integrated circuits; electronic switching systems; signal generators; VLSI; cell-based approach; double poly single metal CMOS technology; international standards; metering signal generator; mixed analog-digital integrated circuit; power consumption; shaped telephone metering pulse; size 3 μm; switching system analog terminations; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS technology; Mixed analog digital integrated circuits; Pulse generation; Pulse shaping methods; Signal generators; Switching systems; Telephony; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Euro ASIC '90

Conference_Location

Paris

Print_ISBN

0-8186-2066-8

Type

conf

DOI

10.1109/EASIC.1990.207983

Filename

207983