_MMC_CSD Struct Reference
[Multimedia Card Driver]

#include <mmcard.h>

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Detailed Description

Multimedia card identification register.

Data Fields
u_char	mmcsd_spec
	Card specification.
u_char	mmcsd_taac
	Data read access time.
u_char	mmcsd_nsac
	Data read access time 2.
u_char	mmcsd_speed
	Maximum data transfer rate.
u_char	mmcsd_ccc_bl [2]
	Card command classes and max. read block length.
u_char	mmcsd_rfld [8]
	Read-only fields.
u_char	mmcsd_pfld
	Programmable field.
u_char	mmcsd_crc
	Checksum.

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Field Documentation

u_char _MMC_CSD::mmcsd_rfld[8]

Read-only fields. [0] 0..1 Device size bits 10..11. [0] 2..3 Reserved. [0] 4 DSR implemented. [0] 5 Read block misalignment. [0] 6 Write block misalignment. [0] 7 Partial blocks for read allowed. [1] 0..7 Device size bits 2..9. [2] 0..2 Max. read current at VDD max. [2] 3..5 Max. read current at VDD min. [2] 6..7 Device size bits 0..1. [3] 0..1 Device size multiplier bits 1..2. [3] 2..4 Max. write current at VDD max. [3] 5..7 Max. write current at VDD min. [4] 0..1 Erase group size multiplier bits 3..4. [4] 2..6 Erase group size. [4] 7 Device size multiplier bit 0. [5] 0..4 Write protect group size. [5] 5..7 Erase group size multiplier bits 0..2. [6] 0..1 Max. write data block length bits 2..3. [6] 2..4 Read to write speed factor. [6] 5..6 Reserved. [6] 7 Write protect group enable. [7] 0 Content protection application. [7] 1..4 Reserved. [7] 5 Partial blocks for write allowed. [7] 6..7 Max. write data block length bits 0..1.

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