13189402

Paragraph Number

158

In one embodiment, the ECC encoder 304 creates independent ECC checkbits for each channel, storage element, die, chip, PEB, or other grouping of storage cells. The ECC checkbits are stored with the data on a particular grouping of storage cells rather than being distributed across multiple groupings. If ECC checkbits are created and stored independently for each grouping of storage cells, the configuration module 352, in response to a data error, may use the ECC checkbits and the known architecture for how an ECC checkbits are written to the groupings of storage cells to determine in which grouping of storage cells the data error occurred, and adjust the read voltage thresholds of those groupings. If ECC checkbits for the data packet are stored across multiple groupings of storage cells, the configuration module 352 may separately check the read biases of data sets from each grouping of storage cells and adjust one or more of the corresponding read voltage thresholds. An array of storage elements with multiple channels is described in greater detail with regard to FIGS. 6A and 6B.

Added by DJM 3 2021