Patent ID: 8222918
Filing Date: 2012-07-17
Classification: H03K

Abstract:
1. An integrated circuit for an output driver, comprising: a differential driver; wherein the differential driver is a low-voltage differential signaling driver having a pull-up portion and a pull-down portion, and either the pull-up portion or the pull-down portion is turned off for an open-drain mode; a first single-ended driver coupled to the differential driver at a first output node of the first single-ended driver and the differential driver; a second single-ended driver coupled to the differential driver at a second output node of the second single-ended driver and the differential driver; wherein the first single-ended driver is coupled to receive first resistance setting signals to provide a first source termination resistance for the open-drain mode of the differential driver; and wherein the second single-ended driver is coupled to receive second resistance setting signals to provide a second source termination resistance for the open-drain mode of the differential driver.