Cypress FM4 Series - MMC Response Check Bit Register

CHAPTER 15: SD Card Interface
906 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
2.45 MMC Response Check Bit Register
This register keeps the respective check bits for response R2 and response R3.
D31 D16
Rsvd
D15 D13
D12 D07
D06 D00
Rsvd
Check Bit 2
Check Bit 1
Bit
Attribute
Description
31-13
Rsvd
Reserved
12-07
RO
Check Bit 2
These bits keep the check bits for response R2 or response R3 when the MMC is used.
The check bits kept in these bits are [133:128] of response R2 or [45:40] of response R3.
In both cases of response R2 and response R3, after the issuance of a command has
been completed, check these bits through software to verify the validity of the response.
Set/Reset
Condition
Set
The response value is 1.
Reset (0)
System reset
Software Reset For All
The response value is 0.
06-00
RO
Check Bit 1
These bits keep the check bits for response R3 when the MMC is used.
The check bits kept in these bits are [7:1] of response R3.
In the case of response R3, after the issuance of a command has been completed, check
these bits through software to verify the validity of the response.
Set/Reset
Condition
Set
The response value is 1.
Reset (0)
System reset
Software Reset For All
The response value is 0.