參數(shù)資料
型號: HB288016MM1
廠商: Hitachi,Ltd.
英文描述: MultiMediaCard 16 MByte
中文描述: 多媒體16字節(jié)
文件頁數(shù): 17/79頁
文件大?。?/td> 233K
代理商: HB288016MM1
HB288016MM1
17
C_SIZE_MULT
This parameter is used for coding a factor MULT for computing the total device size (refer to “C_SIZE”).
The factor MULT is defined as 2
C_SIZE_MULT+2
.
Multiply Factor for the Device Size
C_SIZE_MULT
MULT
Remark
0
2
2
= 4
1
2
3
= 8
2
2
4
= 16
3
2
5
= 32
4
2
6
= 64
5
2
7
= 128
6
2
8
= 256
7
2
9
= 512
The card capacity is 16 MBytes. The value of the parameter C_SIZE_MULT used in the formula to
calculate the card capacity (refer to parameter “C_SIZE”) for the HB288016MM1 is 2 (multiplier = 16).
SECTOR_SIZE
The size of an erasable or write protection sector. The content of this register is a binary coded value
defining the number of write blocks (refer to “WRITE_BLK_LEN”) of a sector. The sector size of the
HB288016MM1 is set to 0 (= one write block = 512 bytes).
ERASE_GROUP_SIZE
The size of an erasable group. The content of this register is a binary coded value defining the number of
sectors (refer to “SECTOR_SIZE”) of a group. This parameters value is 15 which means a group size of
(15+1)*512 bytes = 8 kByte.
WP_GRP_SIZE
The size of a write protection group. The content of this register is a binary coded value defining the
number of sectors (refer to “SECTOR_SIZE”) of a group. This parameters value is 1 which means a group
size of (1+1)*(ERASE_GROUP_SIZE) = 16 kByte.
WP_GRP_ENABLE
The value is set to ‘1’, meaning group write protection is enabled.
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