sdmmc_scr_t struct

Decoded values from SD Configuration Register Note: When new member is added, update reserved bits accordingly

Syntax

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Declaration

from sd_protocol_types.h:66

typedef struct { uint32_t sd_spec: 4; uint32_t erase_mem_state: 1; uint32_t bus_width: 4; uint32_t reserved: 23; uint32_t rsvd_mnf; } sdmmc_scr_t;

Fields

Field

Declared as

Description

sdmmc_scr_t::sd_spec

uint32_t: 4

SD Physical layer specification version, reported by card.

sdmmc_scr_t::erase_mem_state

uint32_t: 1

data state on card after erase whether 0 or 1 (card vendor dependent).

sdmmc_scr_t::bus_width

uint32_t: 4

bus widths supported by card: BIT(0) — 1-bit bus, BIT(2) — 4-bit bus.

sdmmc_scr_t::reserved

uint32_t: 23

reserved for future expansion.

sdmmc_scr_t::rsvd_mnf

uint32_t

reserved for manufacturer usage.

Examples

References

from examples

sdmmc_scr_t struct

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sdmmc_scr_t struct

Syntax

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Call Tree

Data Use

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Implementations

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