SEMICONDUCTOR MEMORY DEVICE, METHOD OF CONTROLLING READ PREAMBLE SIGNAL THEREOF, AND DATA TRANSMISSION SYSTEM
First Claim
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1. A system, comprising:
- a controller comprising a plurality of first external terminals configured to supply a command, a clock signal and an address, and communicate a data, and communicate a strobe signal related to the data; and
a semiconductor memory device comprising a plurality of second external terminals corresponding to the plurality of first external terminals,one of the plurality of first external terminals and one of the plurality of second external terminals transferring an information specifying a length of a preamble of the strobe signal before the semiconductor memory device communicates the data,
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Abstract
A system, includes a controller including a plurality of first external terminals configured to supply a command, a clock signal and an address, and communicate a data, and communicate a strobe signal related to the data, and a semiconductor memory device including a plurality of second external terminals corresponding to the plurality of first external terminals, one of the plurality of first external terminals and one of the plurality of second external terminals transferring an information specifying a length of a preamble of the strobe signal before the semiconductor memory device communicates the data,
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Citations
20 Claims
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1. A system, comprising:
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a controller comprising a plurality of first external terminals configured to supply a command, a clock signal and an address, and communicate a data, and communicate a strobe signal related to the data; and a semiconductor memory device comprising a plurality of second external terminals corresponding to the plurality of first external terminals, one of the plurality of first external terminals and one of the plurality of second external terminals transferring an information specifying a length of a preamble of the strobe signal before the semiconductor memory device communicates the data, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
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a semiconductor memory device and a controller, the semiconductor memory device comprising; a first external terminal provided to receive a clock signal; a second external terminal provided to receive a read command; a third external terminal configured to output a data strobe signal in response to the read command, the data strobe signal including a read preamble and a toggle transition following to the preamble; a fourth external terminal provided to output a read data in synchronization with the toggle transition of the data strobe signal; and a control circuit configured to control a length of the read preamble of the data strobe signal based on a preamble length information, the controller comprising; a fifth external terminal provided to output the clock signal; a sixth external terminal provided to output the read command; a seventh external terminal provided to receive the read data; an eighth external terminal provided to receive the data strobe signal related to the read data; and a ninth external terminal provided to output the preamble length information. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system, comprising:
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a semiconductor memory device and a controller; the semiconductor memory device comprising; a first external terminal provided to receive a clock signal; a second external terminal provided to transfer a data with the controller in synchronization with the clock signal; a third external terminal provided to receive a command for communicating the data; a control circuit configured to produce a data strobe signal, which includes a preamble and a toggle transition following to the preamble, so that the transferring the data is conducted by the toggle transition of the data strobe signal; and a fourth external terminal provided to be supplied an information specifying a length of the preamble of the strobe signal, the controller, comprising; a fifth external terminal provided to output the clock signal; a sixth external terminal provided to communicate the data; a seventh external terminal configured to output the command; and an eighth external terminal configured to output the information. - View Dependent Claims (18, 19, 20)
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Specification