Optimizing EDRAM refresh rates in a high performance cache architecture
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United States of America Patent
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Aug 14, 2012
Grant Date -
Dec 29, 2011
app pub date -
Jun 24, 2010
filing date -
Jun 24, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Controlling refresh request transmission rates in a cache comprising: a refresh requestor configured to transmit a refresh request to a cache memory at a first refresh rate, the first refresh rate comprising an interval, the interval comprising receiving a plurality of first signals, the first refresh rate corresponding to a maximum refresh rate, and a refresh counter operatively coupled to the refresh requestor and configured to reset in response to receiving a second signal, increment in response to receiving each of a plurality of refresh requests from the refresh requestor, and reset and transmit a current count to the refresh requestor in response to receiving a third signal, wherein the refresh requestor is configured to transmit a refresh request at a second refresh rate, in response to receiving the current count from the refresh counter and determining that the current count is greater than a refresh threshold.
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