MEMORY DECISION FEEDBACK EQUALIZER TESTING
First Claim
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1. A memory device, comprising:
- one or more memory banks configured to store data;
a data receiver configured to;
receive distorted input data as part of a data stream;
apply a correction factor to the distorted input data to offset inter-symbol interference from the data stream on the distorted input data; and
generate the data by applying the correction factor to the distorted data; and
a test circuit internal to the memory device, wherein the test circuit is configured to generate the data stream.
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Abstract
A device includes one or more memory banks configured to store data. The device also includes a data receiver configured to receive distorted input data as part of a data stream, apply a correction factor to the distorted input data to offset inter-symbol interference from the data stream on the distorted input data, and generate the data by applying the correction factor to the distorted data. The device further includes a test circuit internal to the device, wherein the test circuit is configured to generate the data stream.
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Citations
34 Claims
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1. A memory device, comprising:
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one or more memory banks configured to store data; a data receiver configured to; receive distorted input data as part of a data stream; apply a correction factor to the distorted input data to offset inter-symbol interference from the data stream on the distorted input data; and generate the data by applying the correction factor to the distorted data; and a test circuit internal to the memory device, wherein the test circuit is configured to generate the data stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor device, comprising:
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a test circuit internal to the device, wherein the test circuit is configured to; generate a data stream comprising a data value; and generate a control signal; a data transmitter configured to alter a characteristic of the data value of the data stream based upon the control signal; and a data receiver configured to receive the data value having an altered characteristic and apply an inverse value of the altered characteristic to the data value to regenerate the data value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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placing a semiconductor device into a testing mode of operation; internally generating a data stream comprising a data value in the semiconductor device; internally generating a control signal configured to activate transmission legs of a transmitter at a particular strength in the semiconductor device; transmitting the data value from at least one activated transmission leg as an input data signal; and applying decision feedback equalization to the input data signal to correct for inter-symbol interference distortion of the input data signal to generate an equalized data value. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A memory testing device, comprising:
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a processor configured to; receive an indication of tap values to be applied by decision feedback circuitry of a memory device; and generate a modified data stream to mimic inter-symbol interference of a data stream correctable by the tap values; and an output configured to transmit the modified data stream as an input data stream to the memory device. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A tangible non-transitory computer-readable medium having computer executable code stored thereon, the code comprising instructions to cause a processor to:
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generate a data stream; transmit the data stream to a semiconductor device; receive a first output data stream from the semiconductor device, wherein the first output data stream comprises a decision feedback equalized data stream of the input data stream; generate a modified data stream to mimic inter-symbol interference of the data stream correctable by decision feedback equalization circuitry of the memory device; and receive a second output data stream from the semiconductor device, wherein the second output data stream comprises a decision feedback equalized data stream of the modified data stream. - View Dependent Claims (32, 33, 34)
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Specification