Card Status Register; Table 169. Card Status - ST STM32F412 Reference Manual

Secure digital input/output interface (SDIO)
27.4.11

Card status register

The response format R1 contains a 32-bit field named card status. This field is intended to
transmit the card status information (which may be stored in a local status register) to the
host. If not specified otherwise, the status entries are always related to the previously issued
command.
Table 169
the table are abbreviated as follows:
Type:
•
E: error bit
• S: status bit
•
R: detected and set for the actual command response
• X: detected and set during command execution. The SDIO card host must poll the card
by issuing the status command to read these bits.
Clear condition:
•
A: according to the card current state
• B: always related to the previous command. Reception of a valid command clears it
(with a delay of one command)
•
C: clear by read
Bits Identifier
ADDRESS_
31
OUT_OF_RANGE
30 ADDRESS_MISALIGN
29 BLOCK_LEN_ERROR
888/1163
defines the different entries of the status. The type and clear condition fields in

Table 169. Card status

Type Value
'0'= no error
E R X
'1'= error
'0'= no error
-
'1'= error
'0'= no error
-
'1'= error
The command address argument was out
of the allowed range for this card.
A multiple block or stream read/write
operation is (although started in a valid
address) attempting to read or write
beyond the card capacity.
The commands address argument (in
accordance with the currently set block
length) positions the first data block
misaligned to the card physical blocks.
A multiple block read/write operation
(although started with a valid
address/block-length combination) is
attempting to read or write a data block
which is not aligned with the physical
blocks of the card.
Either the argument of a
SET_BLOCKLEN command exceeds the
maximum value allowed for the card, or
the previously defined block length is
illegal for the current command (e.g. the
host issues a write command, the current
block length is smaller than the maximum
allowed value for the card and it is not
allowed to write partial blocks)
RM0402 Rev 6
Description
RM0402
Clear
condition
C
C
C