Duobinary voltage-mode transmitter

摘要

A duobinary voltage-mode transmitter comprises a first branch including a first logic circuit and a first driver, and a second branch including a second logic circuit and a second driver. When a transition occurs between NRZ signals, two ends of a first match circuit are electrically coupled between the output nodes of the first driver and the second driver, respectively, and the first driver and the second driver are turned off.

主权项

1. A duobinary voltage-mode transmitter, comprising:
a first branch including:
a first logic circuit coupled to receive non-return-to-zero (NRZ) signals, and configured to detect transition between the NRZ signals;a first driver controlled by at least one output of the first logic circuit, thereby generating a duobinary signal; a second branch including:
a second logic circuit coupled to receive complementary NRZ signals being complement to the NRZ signals received by the first logic circuit, and configured to detect transition between the complementary NRZ signals;a second driver controlled by at least one output of the second logic circuit; a first match circuit having two ends coupled between output nodes of the first driver and the second driver, respectively, the first match circuit being switchable by an output of the first or second logic circuit; when a transition occurs between the NRZ signals, the first match circuit is switched on such that the two ends of the first match circuit are electrically coupled between the output nodes of the first driver and the second driver, respectively, and the first driver and the second driver are turned off.