Morgan, Lewis & Bockius LLP
Impedance controlled output driver
An output driver has an output multiplexor and an output current driver. The output multiplexor receives a data signal and outputs a q-node signal. The output current driver receives the q-node signal and drives a bus based on the q-node signal. The output multiplexor processes the data signal in various ways to generate the q-node signal. The output current driver is responsive to current control bits to select a amount of output drive current. In addition, the output multiplexor is controlled such that the output impedance of the output current driver is maintained within a predetermined range.
Rambus Inc.
G H H
G11C H03K H03K
inventional inventional inventional
Kurt T. Donald C. Natsuki Jun Michael Tak-Kei
Knorpp Stark Kushiyama Kim Ching