MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 482

• 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 128. Card status (continued)
20.4.12
Table 129. SD status
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3
2
1
0
511: 510 DAT_BUS_WIDTH S R
509
508: 496 Reserved
Bits
Bits
AKE_SEQ_ERROR
Reserved for application specific commands
Reserved for manufacturer test mode
SECURED_MODE S R
SD status register
The SD status contains status bits that are related to the SD memory card proprietary
features and may be used for future application-specific usage. The size of the SD Status is
one data block of 512 bits. The contents of this register are transmitted to the SDIO card
host if ACMD13 is sent (CMD55 followed with CMD13). ACMD13 can be sent to a card in
transfer state only (card is selected).
Table 129
fields in the table are abbreviated as follows:
Type:
●
●
●
●
Clear condition:
●
●
●
Identifier
Identifier
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
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
defines the different entries of the SD status register. The type and clear condition
Type
E R
Type
’00’= 1 (default)
‘01’= reserved
‘10’= 4 bit width
‘11’= reserved
’0’= Not in the mode
’1’= In Secured Mode
’0’= no error
’1’= error
Value
Doc ID 13902 Rev 9
Value
Error in the sequence of the
authentication process
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”).
Description
Description
condition
C
condition
A
A
RM0008
Clear
Clear