mmc_csd_t Struct Reference

MMC card CSD register. More...

#include <fsl_sdmmc_spec.h>

Data Fields
uint8_t	csdStructureVersion
	CSD structure [127:126].
uint8_t	systemSpecificationVersion
	System specification version [125:122].
uint8_t	dataReadAccessTime1
	Data read access-time 1 [119:112].
uint8_t	dataReadAccessTime2
	Data read access-time 2 in CLOCK cycles (NSAC*100) [111:104].
uint8_t	transferSpeed
	Max. More...
uint16_t	cardCommandClass
	card command classes [95:84]
uint8_t	readBlockLength
	Max. More...
uint16_t	flags
	Contain flags in _mmc_csd_flag.
uint16_t	deviceSize
	Device size [73:62].
uint8_t	readCurrentVddMin
	Max. More...
uint8_t	readCurrentVddMax
	Max. More...
uint8_t	writeCurrentVddMin
	Max. More...
uint8_t	writeCurrentVddMax
	Max. More...
uint8_t	deviceSizeMultiplier
	Device size multiplier [49:47].
uint8_t	eraseGroupSize
	Erase group size [46:42].
uint8_t	eraseGroupSizeMultiplier
	Erase group size multiplier [41:37].
uint8_t	writeProtectGroupSize
	Write protect group size [36:32].
uint8_t	defaultEcc
	Manufacturer default ECC [30:29].
uint8_t	writeSpeedFactor
	Write speed factor [28:26].
uint8_t	maxWriteBlockLength
	Max. More...
uint8_t	fileFormat
	File format [11:10].
uint8_t	eccCode
	ECC code [9:8].

Detailed Description

Field Documentation

uint8_t mmc_csd_t::transferSpeed

bus clock frequency [103:96]

uint8_t mmc_csd_t::readBlockLength

read data block length [83:80]

uint8_t mmc_csd_t::readCurrentVddMin

read current @ VDD min [61:59]

uint8_t mmc_csd_t::readCurrentVddMax

read current @ VDD max [58:56]

uint8_t mmc_csd_t::writeCurrentVddMin

write current @ VDD min [55:53]

uint8_t mmc_csd_t::writeCurrentVddMax

write current @ VDD max [52:50]

uint8_t mmc_csd_t::maxWriteBlockLength

write data block length [25:22]