Rambus Inc.

Samsung Electronics Co., Ltd.

Woopoung Kim

Frederick Abbott Ware

Brian S Leibowitz

Huy M Nguyen

Kyung Suk Oh

Jade M Kizer

Lei Luo

Eugene C Ho

Rui Zhang

Kyoungsoo Kim

John Wilson

John Cronan Eble

Embodiments of a memory controller are described. This memory controller communicates signals to a memory device via a signal line, which can be a data signal line or a command/address signal line. Termination of the signal line is divided between an external impedance outside of the memory controller and an internal impedance within the memory controller. The memory controller does not activate the external impedance prior to communicating the signals and, therefore, does not deactivate the external impedance after communicating the signals. The internal impedance of the memory controller can be enabled or disabled in order to reduce interface power consumption. Moreover, the internal impedance may be implemented using a passive component, an active component or both. For example, the internal impedance may include either or both an on-die termination and at least one driver.

Signal lines with internal and external termination

Growing community of inventors

Dallas, TX, United States of America

Woopoung Kim