CHAPTER 15: SD Card Interface
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 893
Tuning Phase Select Enable
This bit reselects the phase for tuning/re-tuning through software.
0: Disables reselecting the phase through software.
1: Enables reselecting the phase through software.
In the case of determining the phase through software, after tuning/re-tuning has been
completed, when there is no communication, set this bit to 1 and select the desired
phase in the Tuning Point Select bit simultaneously.
System reset
Software Reset For All
Writing 0 to the Sampling Clock Select bit in the Host
Control 2 Register
Automatic clearing to 0 after writing 1
Tuning Point Select
These bits select the phase to be used in determining the phase for tuning/re-tuning
through software (Tuning Phase Select Mode bit = 1).
0b00000001: Selects the zeroth phase.
0b00000010: Selects the first phase.
0b00000100: Selects the second phase.
0b00001000: Selects the third phase.
0b00010000: Selects the fourth phase.
0b00100000: Selects the fifth phase.
0b01000000: Selects the sixth phase.
0b10000000: Selects the seventh phase.
It is prohibited to set these bits to any value not listed above.
System reset
Software Reset For All
Writing 0 to the Sampling Clock Select bit in the Host
Control 2 Register
0 Write
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