| 摘要 |
A post-write read operation, using a combined verification of multiple pages of data, is presented. In a simultaneous verification of multiple pages in a block, the controller evaluates a combined function of the multiple pages, instead of evaluating each page separately. In one exemplary embodiment, the combined function is formed by XORing the pages together. Such a combined verification of multiple pages based on the read data can significantly reduce the controller involvement, lowering the required bus and ECC bandwidth for a post-write read and hence allow efficient post-write reads when the number of dies is large. |
