Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
348
SAM9G25 [DATASHEET]
11032D–ATARM–10-Mar-2014
27.
Programmable Multibit ECC Controller (PMECC)
27.1
Description
The Programmable Multibit ECC Controller (PMECC) is a programmable binary BCH (Bose, Chaudhuri and
Hocquenghem) encoder/decoder. This controller can be used to generate redundancy information for both Single-Level
Cell (SLC) and Multi-level Cell (MLC) NAND Flash devices. It supports redundancy for correction of 2, 4, 8, 12 or 24 bits
of error per sector of data.
Hocquenghem) encoder/decoder. This controller can be used to generate redundancy information for both Single-Level
Cell (SLC) and Multi-level Cell (MLC) NAND Flash devices. It supports redundancy for correction of 2, 4, 8, 12 or 24 bits
of error per sector of data.
27.2
Embedded Characteristics
8-bit Nand Flash Data Bus Support
Multibit Error Correcting Code.
Algorithm based on binary shortened Bose, Chaudhuri and Hocquenghem (BCH) codes.
Programmable Error Correcting Capability: 2, 4, 8, 12 and 24 bit of errors per sector.
Programmable Sector Size: 512 bytes or 1024 bytes.
Programmable Number of Sectors per page: 1, 2, 4 or 8 sectors of data per page.
Programmable Spare Area Size.
Supports Spare Area ECC Protection.
Supports 8 Kbytes page size using 1024 bytes per sector and 4 kbytes page size using 512 bytes per sector.
Configurable through APB interface
Multibit Error Detection is Interrupt Driven.