HB28E016/D032/D064/B128MM2
12
Name
Field
Width
CSD-slice Value
Type
Write protect group size
WP_GRP_SIZE
5
36:32]
0x01 (16 kByte)
ead only
Write protect group enable
WP_GRP_ENABLE
1
31:31]
1
’
ead only
Manufacturer default ECC
DEFAULT_ECC
2
30:29]
0
ead only
Write speed factor
R2W_FACTOR
3
28:26]
2 (4)
ead only
Max. write data block length
WRITE_BLK_LEN
4
25:22]
9 (512 Bytes)
ead only
Partial blocks for write
allowed
WRITE_BLK_PARTIAL 1
21:21]
0
’
ead only
Reserved
—
5
20:16]
0
ead only
File format group
FILE_FORMAT_GRP
1
15:15]
×
*
4
×
×
ead/write
Copy flag (OTP)
COPY
1
14:14]
ead/write
Permanent write protection
PERM_WRITE_PROTE
CT
1
13:13]
ead/write
Temporary write protection
TMP_WRITE_PROTEC
T
1
12:12]
×
ead/write/
erase
File format
FILE_FORMAT
2
11:10]
×
×
ead/write
ECC code
ECC
2
9:8]
ead/write/
erase
7-bit CRC
CRC7
7
7:1]
×
ead/write/
erase
Not used, always 1
Notes: 1. This field is depended on the model. Refer to also C_SIZE
2. This field is depended on the model.
3. This field is depended on the model. Refer to also C_SIZE_MULT
4.
×
means user programmable
—
1
0:0]
1
ead only
Some of the CSD fields are one-time or multiple programmable by the customer or provider. All other
field values are fixed. The following section describes the CSD fields and their values for these Hitachi
MultiMediaCards:
CSD_STRUCTURE
CSD Register Structure
CSD_STRUCTURE
CSD register structure
“
10
”
CSD version No. 1.2
The CSD version of these Hitachi MultiMediaCards is related to the “MultiMediaCard system
specification, Version 3.1”. The parameter CSD_STRUCTURE has permanently the value “10”.