Embedded universal serial bus 2 repeater
Aspects of the disclosure provide for a method. In at least some examples, the method includes receiving, at a circuit, data via a differential input signal. The method further includes detecting a falling edge in the data received via the differential input signal. The method further includes holding an output of the circuit at a final logical value of the data. The method further includes disabling a transmitter of the circuit while holding the output of the circuit at the final logical value of the data. The method further includes releasing the output of the circuit from the final logical value of the data.
1. A circuit, comprising:
a first amplifier having a first input coupled to a first node, a second input coupled to a second node, a first output, and a second output;
a second amplifier having a first input coupled to the first output of the first amplifier, a second input coupled to the second output of the first amplifier, a first output coupled to a third node, and a second output coupled to a fourth node;
a third amplifier having a first input coupled to the third node, a second input coupled to the fourth node, a first output coupled to a fifth node, a second output coupled to a sixth node, and a control input;
a first resistor coupled between the first node and a seventh node;
a second resistor coupled between the seventh node and the second node; and
a first comparator having a first input coupled to the seventh node, a second input coupled to an eighth node, and an output.