Table 158. Sd Status - STMicroelectronics STM32F405 Reference Manual

Secure digital input/output interface (SDIO)
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
511: 510 DAT_BUS_WIDTH S R
509 SECURED_MODE S R
508: 496 Reserved
495: 480 SD_CARD_TYPE
SIZE_OF_PROTE
479: 448
CT ED_AREA
447: 440 SPEED_CLASS
PERFORMANCE_
439: 432
MOVE
431:428 AU_SIZE
427:424 Reserved
423:408 ERASE_SIZE
407:402 ERASE_TIMEOUT S R
401:400 ERASE_OFFSET
399:312 Reserved
311:0 Reserved for Manufacturer
1038/1731

Table 158. SD status

Type Value
'00'= 1 (default)
'01'= reserved
'10'= 4 bit width
'11'= reserved
'0'= Not in the mode
'1'= In Secured Mode
'00xxh'= SD Memory Cards as
defined in Physical Spec Ver1.01-
2.00 ('x'= don't care). The
S R following cards are currently
defined:
'0000'= Regular SD RD/WR Card.
'0001'= SD ROM Card
Size of protected area (See
S R
below)
Speed Class of the card (See
S R
below)
Performance of move indicated by
1 [MB/s] step.
S R
(See below)
Size of AU
S R
(See below)
Number of AUs to be erased at a
S R
time
Timeout value for erasing areas
specified by
UNIT_OF_ERASE_AU
Fixed offset value added to erase
S R
time.
DocID018909 Rev 11
Description
Shows the currently defined
databus width that was
defined by
SET_BUS_WIDTH
command
Card is in Secured Mode of
operation (refer to the "SD
Security Specification").
In the future, the 8 LSBs will
be used to define different
variations of an SD memory
card (each bit will define
different SD types). The 8
MSBs will be used to define
SD Cards that do not comply
with current SD physical
layer specification.
(See below)
(See below)
(See below)
(See below)
(See below)
(See below)
(See below)
RM0090
Clear
condition
A
A
A
A
A
A
A
A
A
A