S3F49DAX Datasheet, PDF (35/44 Pages) Samsung semiconductor – MultiMediaCard Controllers

MULTIMEDIACARD CONTROLLER
S3C49DAX
Name
File Format Group
Copy Flag (OTP)
Permanent Write Protection
Temporary Write Protection
File Format
ECC Code
CRC
Not used, always “1”
Table 17. The CSD Field (Continuous)
Field
FILE_FORMAT_GRP
COPY
PERM_WRITE_PROTECT
TMP_WRITE_PROTECT
FILE_FORMAT
ECC
CRC
–
Width
1
1
1
1
2
2
7
1
Cell Type
R/W
R/W
R/W
R/W
R/W
R/W/E
R/W/E
–
CSD-Slice
[15]
[14]
[13]
[12]
[11:10]
[9:8]
[7:1]
[0]
The following sections describe the CSD fields and the relevant data types. If not explicitly defined otherwise, all bit-
strings are interpreted as binary coded numbers starting with the left bit first.
• CSD_STRUCTURE: Describes the version number of the CSD structure.
CSD_STRUCTURE
0
1
2
3
CSD Structure Version
CSD version No. 1.0
CSD version No. 1.1
CSD version No. 1.2
Reserved
Valid for System Specification Version
Version 1.0 – 1.2
Version 1.4 – 2.2
Version 3.1
Reserved
• SPEC_VER: Defines the MultiMediaCard System Specification version supported by the card.
SPEC_VER
0
1
2
3
4–15
Version 1.0 – 1.2
Version 1.4
Version 2.0 – 2.2
Version 3.1
Reserved
System Specification Version Number
• TAAC: Defines the asynchronous part of the data access time.
TAAC
2:0
6:3
7
Description
Time Unit: 000 = 1nsec 001 = 10nsec 010 = 100nsec 011 = 1usec,
100 = 10usec 101 = 100usec 110 = 1msec 111 = 10msec
Time Value: 0 = Reserved, 1 = 1.0, 2 = 1.2, 3 = 1.3, 4 = 1.5, 5 = 2.0, 6 = 2.5
7 = 3.0, 8 = 3.5, 9 = 4.0, A = 4.5, B = 5.0, C = 5.5, D = 6.0, E = 7.0, F = 8.0
Reserved
34