參數(shù)資料
型號(hào): HB288032MM1
元件分類: PROM
英文描述: FLASH 2.7V PROM CARD, XMA7
封裝: CARD-7
文件頁數(shù): 13/80頁
文件大?。?/td> 236K
代理商: HB288032MM1
HB288032MM1
20
ECC
Defines the ECC code that was used for storing data on the card. This field is used by the host (or
application) to decode the user data. The following table defines the field format.
ECC Type
ECC
ECC type
Maximum number of correctable bits
0
none (default)
none
1
BCH (542,512)
3
2–15
reserved
The content provider or customer defines which kind of error correction may be used to protect the contents
of the HB288032MM1. This value is programmable.
CRC
The CRC register contains the check sum for the CSD content. The check sum is computed by the
following formulas: Generator polynomial:
G(x) = x
7 + x3 + 1
M(x) = CSD[127]
x119 +...+ CSD[8]x0 CRC[6...0] = Remainder [(M(x)x7)/G(x)]
The user has to recalculate a new CRC after defining a new CSD.
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