Patent ID: 6356582
Filing Date: 2002-03-12
Classification: G06F,H04L

Abstract:
A method performed by a universal serial bus transceiver, formed in a single integrated circuit package, for communicating data via a universal serial bus, the method comprising:(a) receiving an externally generated reference voltage; (b) receiving first and second data input signals from an external circuit, a logical HIGH level of said first and second data input signals corresponding to said reference voltage; (c) generating first and second bus data output signals at a universal serial bus data signal level, in response to said first and second data input signals, for being applied to said universal serial bus, a logical HIGH universal serial bus data signal level being different from said logical HIGH level of said first and second data input signals; (d) receiving first and second bus data input signals at said universal serial bus data signal level from said universal serial bus; (e) generating at least one data output signal in response to said first and second bus data input signals for being applied to said external circuit, a logical HIGH level of said at least one data output signal corresponding to said reference voltage; (f) receiving by a differential receiving amplifier said first and second bus data input signals from said universal serial bus; (g) generating a differential receive output signal in response to said first and second bus data input signals, a logical HIGH level of said differential receive output signal corresponding to said reference voltage; and (h) applying said differential receive output signal to an output terminal of said integrated circuit package.