Patent ID: 6522169
Filing Date: 2003-02-18
Classification: G06F

Abstract:
A system that uses a binary system of a first logic value and a second logic value to communicate data among a plurality of devices, the system comprising:a first device that communicates the first logic value at a first voltage level; at least one second device that communicates the first logic value at a second voltage level that differs from the first voltage level; and at least one threshold detector coupled to receive an input signal from the first device and the at least one second device at a first node, the threshold detector having a first output terminal for providing a first signal indicative of the input signal having a voltage less than a first threshold voltage, and a second output terminal for providing a second signal indicative of the input signal having a voltage less than a second threshold voltage; wherein assertion of the first signal and not the second signal indicates that the input signal originated within the first device; assertion of the first signal and the second signal indicates that the input signal originated within the second device; and a delay associated with asserting the second signal is greater than a delay associated with asserting the first signal.