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US 7,257,035 B2Granted
Method for detecting data strobe signal
AssigneeVIA Technologies, Inc.
InventorsBo-Wei Hsieh, Ming-Shi Liou, Weber Chuang, Chi Chang
Life of this patent
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Abstract
A method for detecting the data strobe signal from a Double Data Rate (DDR) Synchronous Dynamic Random Access Memory (SDRAM). The method executes a data reading process at first and records the latency period of the data read process to be a basis for detecting the arrival timing of the preamble in the data strobe signals in the subsequent data reading process.
Claims6
A method for detecting preamble of data strobe signal, comprising:
- estimating a latency;
- counting a first counting value when a reading command signal is asserted;
- and
- asserting a detection signal for identifying said preamble of data strobe signal when said counting value reaches to said latency.
1 more element
Dependencies are inferred from the claim text.