US Patent 7783954 System for controlling high-speed bidirectional communication

A system for controlling high-speed bidirectional communication includes a slave device such as a memory device, for example, coupled to a master device such as a memory controller, for example. The master device may be configured to control data transfer between the master device and the slave device. The master device may be configured to provide one or more clock signals to the slave device and during an initialization mode, the master device may modify a phase alignment of the one or more clock signals. Further the master device may subsequently modify a phase alignment of data transmitted from the master device based upon information received from the slave device.