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SD_CSD struct
Card Specific Data: CSD Register
Syntax
typedef struct
{
uint8_t CSDStruct:2;
uint8_t Reserved1:6;
uint8_t TAAC:8;
uint8_t NSAC:8;
uint8_t MaxBusClkFrec:8;
uint16_t CardComdClasses:12;
uint8_t RdBlockLen:4;
uint8_t PartBlockRead:1;
uint8_t WrBlockMisalign:1;
uint8_t RdBlockMisalign:1;
uint8_t DSRImpl:1;
union csd_version {
struct_v1 v1;
struct_v2 v2;
} version;
uint8_t EraseSingleBlockEnable:1;
uint8_t EraseSectorSize:7;
uint8_t WrProtectGrSize:7;
uint8_t WrProtectGrEnable:1;
uint8_t Reserved2:2;
uint8_t WrSpeedFact:3;
uint8_t MaxWrBlockLen:4;
uint8_t WriteBlockPartial:1;
uint8_t Reserved3:5;
uint8_t FileFormatGrouop:1;
uint8_t CopyFlag:1;
uint8_t PermWrProtect:1;
uint8_t TempWrProtect:1;
uint8_t FileFormat:2;
uint8_t Reserved4:2;
uint8_t crc:7;
uint8_t Reserved5:1;
} SD_CSD;
Fields
Field
Declared as
uint8_t:2
uint8_t:6
uint8_t:8
uint8_t:8
uint8_t:8
uint16_t:12
uint8_t:4
uint8_t:1
uint8_t:1
uint8_t:1
uint8_t:1
uint8_t:1
uint8_t:7
uint8_t:7
uint8_t:1
uint8_t:2
uint8_t:3
uint8_t:4
uint8_t:1
uint8_t:5
uint8_t:1
uint8_t:1
uint8_t:1
uint8_t:1
uint8_t:2
uint8_t:2
uint8_t:7
uint8_t:1