Cypress FM4 Series - Page 891

CHAPTER 15: SD Card Interface
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 891
Bit
Attribute
Description
16
RW
CMD Conflict Check Disable
This bit enables or disables the CMD bus conflict check.
*: For this Family, set this bit to 1.
0: Enables the CMD bus conflict check.
1: Disables the CMD bus conflict check.
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
0 Write
15-13
Rsvd
Reserved
12-11
RW
Re-Tuning Range Select
This field sets the phase check range for setting the Re-Tuning Request bit in
Re-Tuning Mode 2 and Re-Tuning Mode 3.
Select an appropriate range according to the value of the 8 Phase Tuning/Re-Tuning
Result bits in the Tuning Status Register.
(For instance, if the value of the 8 Phase Tuning/Re-Tuning Result bits is 0b11100000,
select 0b00.)
If an inappropriate range is set, the normal operation of the SD card interface is not
guaranteed.
0b00: The SD card interface checks the range of ±1.
0b01: The SD card interface checks the range of ±2.
0b10: The SD card interface checks the range of ±3.
0b11: Reserved
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
Writing "0" to the Sampling Clock Select bit in the Host
Control 2 Register
0 Write