Manual

803M Series Industrial Grade microSD Card Product Manual v2.0Cactus Technologies
®
12
CSD bit Width Name Field Value Note
[127:126] 2 CSD Structure CSD_STRUCTURE 01 b v.2.0
[125:120] 6 Reserved --- --- ---
[119:112] 8
Data read access
time 1
TAAC 0E h 1ms (*3)
[111:104] 8
Data read access
time 2
NSAC 00 h (*3)
[103:96] 8
Max. data trans-
fer rate
TRAN_SPEED 32 h 25MHz
[95:84] 12
Card command
classes
CCC 5B5h *1
[83:80] 4
Max. read data
block length
READ_BL_LEN 9 h 512bytes(*3)
[79] 1
Partial block read
allowed
READ_BL_PARTIAL 0 b Not Supported(*3)
[78] 1
Write block mis-
alignment
WRITE_BLK_MIS-
ALIGN
0 b Not Supported (*3)
[77] 1
Read block mis-
alignment
READ_BLK_MIS-
ALIGN
0 b Not Supported (*3)
[76] 1 DSR implemented DSR_IMP 0 b Not supported (*3)
[75:70] 6 Reserved --- 000000b ---
[69:48] 22 Device size C_SIZE *2 *2
[47] 1 Reserved --- 0 b ---
[46] 1
Erase single block
enable
ERASE_BLK_EN 1 b Allowed (*3)
[45:39] 7 Erase sector size SECTOR_SIZE 7Fh 64KB (*3)
[38:32] 7
Write protect
group size
WP_GRP_SIZE 00h (*3)
[31] 1
Write protect
group enable
WP_GRP_ENABLE 0 b Not Supported (*3)
[30:29] 2 Reserved --- --- ---
[28:26] 3
Write speed
factor
R2W_FACTOR 010 b 4X (*3)
[25:22] 4
Max. write data
block length
WRITE_BL_LEN 9 h 512bytes (*3)
[21] 1
Partial block write
allowed
WRITE_BL_PAR-
TIAL
0 b Not Supported (*3)
[20:16] 5 Reserved --- --- ---
[15] 1 File format group
FILE_FORMAT_
GRP
0 b HD FAT (*3)
[14] 1 Copy ag COPY 0 b Not copied