Memory device with different termination units for different signal frequencies
AssigneeSamsung Electronics Co., Ltd.
InventorJung-Joon Lee
Life of this patent
Estimating the term…
Abstract
A memory device includes a first termination unit coupled to a first pin for receiving a first signal having a first frequency component. The memory device also includes a second termination unit coupled to a second pin for receiving a second signal having a second frequency component higher than the first frequency component. The first termination unit is a different type from the second termination unit that provides less signal distortion than the first termination unit. For example, the first termination unit is of an open-drain type that has less power consumption, and the second termination unit is of a push-pull type that has less signal distortion.
Claims27
A memory device, comprising:
- a first termination unit coupled to a first pin of the memory device and for receiving a first signal having a first frequency component;
- and
- a second termination unit coupled to a second pin of the memory device and separate from the first pin and for receiving a second signal having a second frequency component higher than the first frequency component;
- wherein the first termination unit is a different type from the second termination unit that provides less signal distortion than the first termination unit,
- and wherein the first pin and the second pin are in separate signal paths such that the first pin does not receive the second frequency component of the second signal and such that the second pin does not receive the first frequency component of the first signal.
A memory system, comprising:
- a memory controller;
- and
- a memory device comprising:
- a first termination unit coupled to a first pin of the memory device for receiving a first signal having a first frequency component from the memory controller;
- and
- a second termination unit coupled to a second pin of the memory device and separate from the firs pin, with the second pin being for receiving a second signal from the memory controller, the second signal having a second frequency component higher than the first frequency component;
- wherein the first termination unit is a different type from the second termination unit that provides less signal distortion than the first termination unit,
- and wherein the first pin and the second pin are in separate signal paths such that the first pin does not receive the second frequency component of the second signal and such that the second pin does not receive the first frequency component of the first signal.
Dependencies are inferred from the claim text.