ECC algorithm of DDR SDRAM

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ECC algorithm of DDR SDRAM

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yansongzhu
Contributor III

What is the ECC algorithm of DDR SDRAM on P2020 platform? It seems not the normal Hamming code.

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ufedor
NXP Employee
NXP Employee

The ECC is a (72,64) Hsiao odd-weight-column code which is modified(shortened) (127,120) Hamming code - refer to the following document (Figure 3, (c)):

https://pdfs.semanticscholar.org/dd97/ac9c9d9267793054aa38782f03342e4ccb32.pdf 

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2,558 次查看
ufedor
NXP Employee
NXP Employee

The ECC is a (72,64) Hsiao odd-weight-column code which is modified(shortened) (127,120) Hamming code - refer to the following document (Figure 3, (c)):

https://pdfs.semanticscholar.org/dd97/ac9c9d9267793054aa38782f03342e4ccb32.pdf