US 12,585,585 B2Granted

Memory device control method and associated apparatus for efficient decoding in using syndrome weight

AssigneeSilicon Motion, Inc.

InventorTsung-Chieh Yang

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Abstract

A control method of a memory device includes: reading and decoding first data of a first chunk, wherein the first chunk is located in a first data page of a super data page, and the super data page includes multiple data pages respectively located in multiple data planes; in response to the first chunk failing to be decoded, obtaining data of multiple corresponding chunks of the first chunk, wherein the multiple corresponding chunks are located in other data pages of the super data page; and in response to all of the data in the multiple corresponding chunks not being successfully decoded, determining whether to give up the decoding operation of the first chunk according to a symptom weight of the first chunk and at least one symptom weight of at least one corresponding chunk.

Claims15

Dependent claims

A control method of a memory device, wherein the memory device comprises a flash memory module, the flash memory module comprises multiple data planes, each of the multiple data planes comprises multiple blocks, each of the multiple blocks comprises multiple data pages, each of the multiple data pages comprises multiple chunks, and the control method comprises:

reading first data from a first chunk for performing a decoding operation, wherein the first chunk is located in a first data page of a super data page, and the super data page comprises the multiple data pages respectively located in the multiple data planes;
in response to the first chunk failing to be decoded, obtaining data of multiple corresponding chunks of the first chunk, wherein the multiple corresponding chunks are respectively located in other data pages of the super data page except for the first data page;
in response to all of the data of the multiple corresponding chunks being successfully decoded, generating decoded data of the first chunk according to multiple decoded data of the multiple corresponding chunks;
and
in response to the data of the multiple corresponding chunks not being all successfully decoded, determining whether to give up the decoding operation of the first chunk according to a syndrome weight of the first chunk and at least one syndrome weight of at least one corresponding chunk among the multiple corresponding chunks that is not successfully decoded.

2 more elements

A flash memory controller, wherein the flash memory controller is arranged to access a flash memory module, the flash memory module comprises multiple data planes, each of the multiple data planes comprises multiple blocks, each of the multiple blocks comprises multiple data pages, each of the multiple data pages comprises multiple chunks, and the flash memory controller comprises:

a read only memory, arranged to store a program code;
a buffer memory;
and
a microprocessor, arranged to execute the program code to control access of the flash memory module;
wherein the microprocessor is arranged to perform the following steps:
reading first data from a first chunk for performing a decoding operation, wherein the first chunk is located in a first data page of a super data page, and the super data page comprises the multiple data pages respectively located in the multiple data planes;
in response to the first chunk failing to be decoded, obtaining data of multiple corresponding chunks of the first chunk, wherein the multiple corresponding chunks are respectively located in other data pages of the super data page except for the first data page;
in response to all of the data of the multiple corresponding chunks being successfully decoded, generating decoded data of the first chunk according to multiple decoded data of the multiple corresponding chunks;
and
in response to the data of the multiple corresponding chunks not being all successfully decoded, determining whether to give up the decoding operation of the first chunk according to a syndrome weight of the first chunk and at least one syndrome weight of at least one corresponding chunk among the multiple corresponding chunks that is not successfully decoded.

7 more elements

A memory device, comprising:

a flash memory module, wherein the flash memory module comprises multiple data planes, each of the multiple data planes comprises multiple blocks, each of the multiple blocks comprises multiple data pages, and each of the multiple data pages comprises multiple chunks;
and
a flash memory controller, arranged to access the flash memory module;
wherein the flash memory controller is arranged to perform the following steps:
reading first data from a first chunk for performing a decoding operation, wherein the first chunk is located in a first data page of a super data page, and the super data page comprises the multiple data pages respectively located in the multiple data planes;
in response to the first chunk failing to be decoded, obtaining data of multiple corresponding chunks of the first chunk, wherein the multiple corresponding chunks are respectively located in other data pages of the super data page except for the first data page;
in response to all of the data of the multiple corresponding chunks being successfully decoded, generating decoded data of the first chunk according to multiple decoded data of the multiple corresponding chunks;
and
in response to the data of the multiple corresponding chunks not being all successfully decoded, determining whether to give up the decoding operation of the first chunk according to a syndrome weight of the first chunk and at least one syndrome weight of at least one corresponding chunk among the multiple corresponding chunks that is not successfully decoded.

6 more elements

Dependencies are inferred from the claim text.