Patent ID: 7538572

Claim:
An apparatus, comprising: an off-chip driver; and an output drive coupled with the off-chip driver to provide an initial drive emphasis, the output drive including a logic circuit to set a strength of the initial drive emphasis, the output drive further including: a first transistor coupled to an output of the off-chip driver and including a gate coupled to an input of the off-chip driver; a second transistor coupled to the first transistor, the first and the second transistors are N-channel field effect transistors; a first delay circuit including an output coupled to a gate of the second transistor and an input coupled to the input of the off-chip driver a third transistor coupled to the output of the off-chip driver, wherein a gate of the third transistor is coupled to the input of the off-chip driver; a fourth transistor coupled to the third transistor; and a second delay circuit coupled to a gate of the fourth transistor and the input of the off-chip driver, wherein the first and second transistors are configure to provide additional initial drive emphasis for a first output from the off-chip driver, and wherein the third and fourth transistors are configure to provide additional initial drive emphasis for a second output from the off-chip driver.