Cypress FM4 Series - Power Switching Register

CHAPTER 15: SD Card Interface
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 889
2.36 Power Switching Register
This register controls power switching of the SD card interface.
D31 D16
Rsvd
D15 D02
D01
D00
Rsvd
I/O Register Selecting
Auto Power Switching
Enable
Bit
Attribute
Description
31-02
Rsvd
Reserved
01
RW
I/O Register Selecting
In the case of controlling power switching by software, this bit selects the register used in
controlling power switching by software.
*: This Family does not use this bit.
"0": Selects I/O Control 2.
"1": Selects I/O Control 1.
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
0 Write
00
RW
Auto Power Switching Enable
This bit selects whether voltage switching is controlled by hardware or software.
0: Voltage switching is controlled by software.
1: Voltage switching is controlled by hardware.
*: This Family does not use this bit.
Set/Reset
Condition
Set
1 Write
Reset (0)
System reset
Software Reset For All
0 Write