MultiMediaCard
TM
25
Sep.22.2005
Revision 0.3
R = readable, W = writable once, E = erasable (multiple writable).
Name
Field
Width
Cell
Type
R
R
R
R
R
CSD-
slice
[127:126]
[125:122]
[121:120]
[119:112]
[111:104]
CSD Value
CSD structure
System specification version
Reserved
Data read access-time 1
Data read access-time 2
in CLK cycles (NSAC*100)
Max. bus clock frequency
Card command classes
CSD_STRUCTURE
SPEC_VERS
-
TAAC
NSAC
2
4
2
8
8
v.1.2
v.4.1
0
1.5ms
100
TRAN_SPEED
CCC
8
12
R
R
[103:96]
[95:84]
20MHz
Not support
class:1,3,8,9,10,11
512Bytes
No
No
No
No
0
---
60mA
Max. read data block length
Partial blocks for read allowed
Write block misalignment
Read block misalignment
DSR implemented
Reserved
Device size
Max. read current @ V
DD
min
Max. read current @ V
DD
max
Max. write current @ V
DD
min
Max. write current @ V
DD
max
Device size multiplier
Erase group size
Erase group size multiplier
Write protect group size
Write protect group enable
Manufacturer default ECC
Write speed factor
Max. write data block length
Partial blocks for write allowed
Reserved
Content protection application
File format group
Copy flag (OTP)
Permanent write protection
READ_BL_LEN
READ_BL_PARTIAL
WRITE_BLK_MISALIGN
READ_BLK_MISALIGN
DSR_IMP
-
C_SIZE
VDD_R_CURR_MIN
4
1
1
1
1
2
12
3
R
R
R
R
R
R
R
R
[83:80]
[79:79]
[78:78]
[77:77]
[76:76]
[75:74]
[73:62]
[61:59]
VDD_R_CURR_MAX
3
R
[58:56]
80mA
VDD_W_CURR_MIN
3
R
[55:53]
60mA
VDD_W_CURR_MAX
3
R
[52:50]
80mA
C_SIZE_MULT
ERASE_GRP_SIZE
ERASE_GRP_MULT
WP_GRP_SIZE
WP_GRP_ENABLE
DEFAULT_ECC
R2W_FACTOR
WRITE_BL_LEN
WRITE_BL_PARTIAL
-
CONTENT_PROT_APP
FILE_FORMAT_GRP
COPY
PERM_WRITE_PROTEC
T
TMP_WRITE_PROTECT
FILE_FORMAT
ECC
CRC
-
3
5
5
5
1
2
3
4
1
4
1
1
1
1
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
[49:47]
[46:42]
[41:37]
[36:32]
[31:31]
[30:29]
[28:26]
[25:22]
[21:21]
[20:17]
[16:16]
[15:15]
[14:14]
[13:13]
---
---
---
---
1
None
---
512
No
0
---
0
---
No
Temporary write protection
File format
ECC code
CRC
Not used, always ’1’
1
2
2
7
1
R/W/E
R/W
R/W/E
R/W/E
-
[12:12]
[11:10]
[9:8]
[7:1]
[0:0]
No
0
None
1