Patent ID: 6714590
Filing Date: 2004-03-30
Classification: H04L

Abstract:
An integrated modem and line-isolation circuit, comprising:a system-side line-isolation integrated circuit capable of being coupled to a capacitive isolation barrier to communicate digital information through the capacitive isolation barrier; an asynchronous serial communication interface port capable of connecting to an external system-side integrated circuit, the asynchronous serial communication interface port included within the system-side line isolation integrated circuit; and digital signal processing (DSP) circuitry included within the system-side line-isolation integrated circuit, the DSP circuitry having a modem processor for modem data and a digital processor for system-side circuitry, wherein the system-side line-isolation circuit is configurable so that modem data from the modem processor or raw voice data from the digital processor may be selectively communicated through the asynchronous serial communication interface port; and wherein the system-side circuitry is configurable to transfer data formatted with a synchronous modem transmission protocol through the asynchronous serial communication interface port.