MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 488

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Secure digital input/output interface (SDIO)
Table 137. Block-oriented write commands
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CMD23 ac
CMD24 adtc
CMD25 adtc
CMD26 adtc
CMD27 adtc
index
CMD
Type
The bus transaction for a GEN_CMD is the same as the single-block read or write
commands (WRITE_BLOCK, CMD24 or READ_SINGLE_BLOCK,CMD17). In this case, the
argument denotes the direction of the data transfer rather than the address, and the data
block has vendor-specific format and meaning.
The card must be selected (in transfer state) before sending GEN_CMD (CMD56). The data
block size is defined by SET_BLOCKLEN (CMD16). The response to GEN_CMD (CMD56)
is in R1b format.
Command types
Both application-specific and general commands are divided into the four following types:
●
●
●
●
Command formats
See
Commands for the MultiMediaCard/SD module
[31:16] set to 0
[15:0] number
of blocks
[31:0] data
address
[31:0] data
address
[31:0] stuff bits R1
[31:0] stuff bits R1
Table 121 on page 464
broadcast command (BC): sent to all cards; no responses returned.
broadcast command with response (BCR): sent to all cards; responses received
from all cards simultaneously.
addressed (point-to-point) command (AC): sent to the card that is selected; does
not include a data transfer on the SDIO_D line(s).
addressed (point-to-point) data transfer command (ADTC): sent to the card that is
selected; includes a data transfer on the SDIO_D line(s).
Argument
R1
R1
R1
Response
format
for command formats.
SET_BLOCK_COUNT
WRITE_BLOCK
WRITE_MULTIPLE_BLOCK
PROGRAM_CID
PROGRAM_CSD
Doc ID 13902 Rev 9
Abbreviation
Defines the number of blocks which
are going to be transferred in the
multiple-block read or write command
that follows.
Writes a block of the size selected by
the SET_BLOCKLEN command.
Continuously writes blocks of data
until a STOP_TRANSMISSION
follows or the requested number of
blocks has been received.
Programming of the card identification
register. This command must be
issued only once per card. The card
contains hardware to prevent this
operation after the first programming.
Normally this command is reserved
for manufacturer.
Programming of the programmable
bits of the CSD.
Description
RM0008