hb28b128mm2 Renesas Electronics Corporation., hb28b128mm2 Datasheet - Page 23

• Manufacturer Part Number: hb28b128mm2
• Description: Multimediacard 16 Mbyte/32 Mbyte/64 Mbyte/128 Mbyte
• Manufacturer: Renesas Electronics Corporation.

• 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
ECC
0
1
2–3
The content provider or customer defines which kind of error correction may be used to protect the
contents of the MultiMediaCard. This value is programmable.
• CRC7
The CRC7 contains the check sum for the CSD content. The check sum is computed according to chapter
“Cyclic Redundancy Check (CRC)”.
The user has to recalculate a new CRC7 after defining a new CSD.
ECC type
none (default)
BCH (542,512)
reserved
Maximum number of correctable bits
none
3
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HB28H016/D032/B064/B128MM2
Rev.5.0, Jan. 2003, page 21 of 88