Cypress FM4 Series - Page 900

CHAPTER 15: SD Card Interface
900 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
Bit
Attribute
Description
17
RW
Boot Auto Abort Enable for MMC
This bit controls whether the SD card interface automatically executes the boot abort of
the boot operation of the MMC.
If this bit is 1, the SD card interface automatically executes boot abort of the boot
operation and alternative boot operation.
With the Block Count Enable bit set to 1, the SD card interface aborts the boot operation
after completing the transfer of data of the block count specified. After having detected an
end attribute in an ADMA transfer, the SD card interface aborts the boot operation.
0: The SD card does not automatically abort the boot operation.
1: The SD card automatically aborts the boot operation.
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
0 Write
16
RW
Boot Ack Enable for MMC
This bit enables or disables the boot acknowledge function of the MMC.
0: Disables the boot acknowledge function.
1: Enables the boot acknowledge function.
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
0 Write
15-10
Rsvd
Reserved
09
RW
CMD / DAT Delay Select
This bit determines whether to delay CMD / DAT.
*: For this Family, set this bit to 1.
0: CMD / DAT is not delayed by SD_CLK.
1: CMD / DAT is delayed by SD_CLK.
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
0 Write