Configurable coding system and method of multiple ECCS
A configurable coding system and method of multiple error correcting codes (ECCs) for a memory device or devices are disclosed. The system includes an ECC codec that selectively performs different error corrections with different parameters. The system also includes means for providing a selected parameter to the ECC codec for initializing the ECC codec. The parameter used for initializing the ECC codec is an error-free parameter.
1. A configurable coding system of multiple error correcting codes (ECCs), a parameter includes a matrix and different matrixes define different error correcting codes, comprising:
an ECC codec configured to selectively perform different error corrections with different parameters, the ECC codec being firstly initialized by an error-free pre-parameter;
an error-free storage device configured to store the error-free pre-parameter to be loaded to the ECC codec; and
an external memory device configured to store the different parameters used for configuring the ECC codec and to store a data;
wherein the ECC codec loads one of the stored error-prone parameters from the external memory device, and corrects the loaded error-prone parameter based on the error-free pre-parameter, thereby generating an error-free corrected parameter that is then used to secondly initialize the ECC codec and correcting the data read from the external memory device.
2. The system of claim 1 , wherein the storage device is a static random access memory (SRAM) or a read only memory (ROM), and the external memory device is a non-volatile memory.
3. The system of claim 1 , wherein the ECC codec comprises an ECC decoder.
4. The system of claim 3 , wherein the ECC codec further comprises an ECC encoder.
5. The system of claim 1 , wherein the ECC codec performs a LDPC code.
6. A configurable coding method of multiple error correcting codes (ECCs), a parameter includes a matrix and different matrixes define different error correcting codes, comprising:
storing a plurality of different parameters;
providing a selected error-prone parameter used for configuring a ECC codec;
correcting the selected error-prone parameter to generate an error-free parameter for accordingly initializing the ECC codec; and
selectively performing an error correction based on the selected error-prone parameter;
wherein the plurality of different parameters are stored in an external memory device, and an error-free storage device is configured to store an error-free pre-parameter to be loaded to the ECC codec to firstly initialize the ECC codec;
wherein the ECC codec loads one of the stored error-prone parameters from the external memory device, and corrects the loaded error-prone parameter based on the pre-parameter, thereby generating the error-free parameter to secondly initialize the ECC codec, and then correcting a data read from the external memory device.
7. The method of claim 6 , wherein the ECC codec performs encoding, decoding or their combination.
8. The method of claim 6 , wherein the error correction is performed for the data of at least one page of a non-volatile memory, the data of at least one block of a non-volatile memory, the data of at least one non-volatile memory or their combination.
9. The method of claim 8 , wherein the non-volatile memory is a flash memory.
10. The method of claim 6 , wherein the storage device is a static random access memory (SRAM) or a read only memory (ROM), and the external memory device is a non-volatile memory.
11. The method of claim 6 , wherein the ECC codec performs a LDPC code.