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AssigneeRambus Inc.
InventorsBilly Wayne Garrett, Jr., John B. Dillon, Michael Tak-Kei Ching, William F. Stonecypher, Andy Peng-Pui Chan, Matthew M. Griffin
Estimating the term…
A memory system and method of adjusting an output driver characteristic of a memory device that is included in the memory system. The method includes providing a command to the memory device that specifies a calibration mode and, during the calibration mode, driving a voltage level onto the first signal line using a first output driver. A first voltage level is derived from an amount of voltage swing generated by the first output driver driving the voltage level onto the first signal line. The method also includes: actively coupling a first comparator to the first signal line; when the first comparator is coupled to the first signal line, comparing the first voltage level with a reference voltage using the first comparator; and adjusting the amount of voltage swing to arrive at a calibrated voltage swing level. In addition, the method includes actively isolation the first comparator from the first signal line upon exiting the calibration mode. The memory device is operable in a normal read operation upon exiting the calibration mode. During the normal read operation, the first output driver is operable to output data onto the first signal line in accordance with the calibrated voltage swing level.
A method of adjusting an output driver characteristic of an integrated circuit memory device that is included in a memory system, wherein the memory system includes an integrated circuit controller device coupled to the memory device via at least a first signal line, the method comprising:
A memory system that includes an integrated circuit controller device coupled to an integrated circuit memory device via at least a first signal line, wherein the memory system comprises:
A method of calibrating an output driver in a memory system including a memory device operable in a calibration mode, the memory device coupled to a controller device via a signaling path, wherein the method comprises:
A memory system that includes an integrated circuit controller device coupled to an integrated circuit memory device via a signaling path, wherein the memory system comprises:
Dependencies are inferred from the claim text.