Storage device adjusting a timing of a data signal and a data strobe signal
AssigneeSamsung Electronics Co., Ltd.
InventorsHYUNGJIN KIM, SOONG-MAN SHIN
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Abstract
A storage device includes a nonvolatile memory device, and a controller that exchanges a data signal with the nonvolatile memory device through a data input and output line and exchanges a data strobe signal with the nonvolatile memory device through a data strobe line. In a training operation, at least one of the nonvolatile memory device and the controller performs a coarse training of adjusting a delay of the data signal with a first stride and a fine training of adjusting the delay of the data signal with a second stride smaller than the first stride.
Claims30
A storage device comprising:
- a nonvolatile memory device;
- and
- a controller configured to exchange a data signal with the nonvolatile memory device through a data input and output line and to exchange a data strobe signal with the nonvolatile memory device through a data strobe line,
- wherein the storage device aligns the data signal and the data strobe signal by:
- adjusting a delay of the data strobe signal by a first delay and transmitting the data signal along with the data strobe signal adjusted by the first delay between the nonvolatile memory device and the controller;
- and
- adjusting a delay of the data strobe signal by a second delay and transmitting the data signal along with the data strobe signal adjusted by the second delay between the nonvolatile memory device and the controller.
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A controller comprising:
- a memory interface configured to exchange a data signal with an external memory device through a data input and output line and to exchange a data strobe signal with the external memory;
- and
- an input and output trainer configured to control the memory interface to align the data signal and the data strobe signal by:
- adjusting a delay of the data strobe signal by a first delay and transmitting the data signal along with the data strobe signal adjusted by the first delay to the external memory device;
- and
- adjusting a delay of the data strobe signal by a second delay and transmitting the data signal along with the data strobe signal adjusted by the second delay to the external memory device.
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A nonvolatile memory device comprising:
- a memory cell array including a plurality of memory cells;
- a row decoder circuit connected to the memory cell array through a plurality of word lines;
- a page buffer circuit connected to the memory cell array through a plurality of bit lines;
- an input and output circuit connected to the page buffer circuit through a plurality of data lines and configured to exchange a data signal with an external device through a data input and output line and exchange a data strobe signal with the external device through a data strobe signal;
- and
- an output trainer configured to control the input and output circuit to align the data signal and the data strobe signal by:
- adjusting a delay of the data strobe signal by a first delay and transmitting the data signal along with the data strobe signal adjusted by the first delay to the external device;
- and
- adjusting a delay of the data strobe signal by a second delay and transmitting the data signal along with the data strobe signal adjusted by the second delay to the memory device.
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Dependencies are inferred from the claim text.