Patent ID: 6963218

Claim:
A bidirectional transceiver comprising: a reference voltage; a comparator having first and second input terminals and an output terminal; a plurality of pullup devices; a plurality of pulldown devices; and a control circuit for controlling the plurality of pullup devices and the plurality of pulldown devices; wherein the first input terminal of the comparator is coupled to an output terminal of the transceiver; wherein the plurality of pullup devices is coupled to the output terminal of the transceiver; wherein the plurality of pulldown devices is coupled to the output terminal of the transceiver; wherein the reference voltage is coupled to the second input terminal of the comparator; wherein the output terminal of the comparator is coupled to the control circuit; wherein the control circuit selectively enables a subset of the plurality of pullup devices based on output of the comparator for transmitting a logic high; wherein the control circuit comprises at least one configuration memory cell for selectively designating the transceiver as a reference transceiver; and wherein the output terminal of the comparator is coupled to an input terminal of the transceiver.