Response Formats; Table 182. Lock Card; Table 183. Application-Specific Commands - ST STM32F412 Reference Manual

RM0402
CMD
Type Argument
index
CMD40 bcr [31:0] stuff bits
CMD41 Reserved
CMD
Type Argument
index
CMD42 adtc [31:0] stuff bits
CMD43
... Reserved
CMD54
CMD
Type Argument
index
[31:16] RCA
CMD55 ac
[15:0] stuff bits
[31:1] stuff bits
CMD56 adtc
[0]: RD/WR
CMD57
... Reserved.
CMD59
CMD60
... Reserved for manufacturer.
CMD63
27.5

Response formats

All responses are sent via the SDIO command line SDIO_CMD. The response transmission
always starts with the left bit of the bit string corresponding to the response code word. The
code length depends on the response type.
A response always starts with a start bit (always 0), followed by the bit indicating the
direction of transmission (card = 0). A value denoted by x in the tables below indicates a
variable entry. All responses, except for the R3 response type, are protected by a CRC.
Every command code word is terminated by the end bit (always 1).
There are five types of responses. Their formats are defined as follows:
Table 181. I/O mode commands (continued)
Response
Abbreviation
format
R5 GO_IRQ_STATE Places the system in the interrupt mode.

Table 182. Lock card

Response
Abbreviation
format
R1b
LOCK_UNLOCK

Table 183. Application-specific commands

Response
Abbreviation
format
R1
APP_CMD
-
RM0402 Rev 6
Secure digital input/output interface (SDIO)
Sets/resets the password or locks/unlocks
the card. The size of the data block is set
by the SET_BLOCK_LEN command.
Indicates to the card that the next command
bits is an application specific command rather
than a standard command
Used either to transfer a data block to the card
or to get a data block from the card for general
- purpose/application-specific commands. The
size of the data block shall be set by the
SET_BLOCK_LEN command.
Description
Description
Description
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