Sandisk Technologies Inc.

Chun Sing Jackson Chung

Steven S Cheng

Techniques are presented for dynamically optimizing the performance of the controller-memory (or 'back-end') interface of a non-volatile memory system. Memory systems are usually designed to have a certain amount of error tolerance for error that can then be corrected by ECC. In may circumstances, such as when a device is new, the ECC capabilities of the system exceed what is needed to correct data storage errors. In these circumstances the memory system internally allots a non-zero portion of this error correction capacity to the back-end interface. This allows for the interface to operate at, for example, higher speed or lower power, even though this will likely lead to transmission path error. The system can also calibrate the back-end interface to determine that amount of error that result from various operating conditions, allowing the operating parameters of the back-end interface to be set according to amount of error that is allotted to the transfer process.

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Sunnyvale, CA, United States of America

Chun Sing Jackson Chung