Description
sdmmc_spi.h::sdhc
Purpose
highlight of
sdhc
Sdhc initialization and identification
Functional difference between sdhc and standard capacity sdcard
- Command argument is different:
- Sdhc uses block address format in memory access commands*, block length is fixed to 512 bytes.
- Standard capacity sdcard uses byte address format in memory access commands, block length is defined in Cmd16.
- Partial access and misalign access are disabled in sdhc as the block address is used.
- Sdhc does not support write-protected commands (Cmd28, Cmd29, Cmd30).
Notes
Memory access commands means block read commands (CMD17, CMD18), block write commands (CMD24, CMD25), and block erase commands (CMD32, CMD33).
Source
The documentation for this Page was generated from the following file:
sdmmc_spi.h