Patent ID: 8836381

Claim:
A driver circuit comprising: a voltage mode main driver including: a first voltage adjusting circuit that provides an adjustable first pseudo-supply voltage to a first node in response to a first supply voltage; a second voltage adjusting circuit that provides an adjustable second pseudo-supply voltage to a second node in response to a second supply voltage; switching circuitry that selectively couples a first one of the first and second nodes to a first differential output terminal, and a second one of the first and second nodes, different than the first one of the first and second nodes, to a second differential output terminal, in response to a data signal; and means for controlling the first and second voltage adjusting circuits to adjust the first and second pseudo-supply voltages to select an output voltage swing across the first and second differential output terminals; and a current mode emphasis driver that selectively couples a first one of the first and second differential output terminals to a first current supply, and a second one of the first and second differential output terminals, different than the first one of the first and second differential output terminals, to a second current supply, in response to an emphasis signal.