Cypress FM4 Series - Page 872

CHAPTER 15: SD Card Interface
872 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
Bit
Attribute
Description
38
HwInit
Driver Type D Support
This bit indicates whether Driver Type D is supported in UHS-I.
1: Driver Type D is supported.
0: Driver Type D is not supported.
37
HwInit
Driver Type C Support
This bit indicates whether Driver Type C is supported in UHS-I.
1: Driver Type C is supported.
0: Driver Type C is not supported.
36
HwInit
Driver Type A Support
This bit indicates whether Driver Type A is supported in UHS-I.
1: Driver Type A is supported.
0: Driver Type A is not supported.
35
Rsvd
Reserved
34
HwInit
DDR50 Support
1: DDR50 is supported.
0: DDR50 is not supported.
33
HwInit
SDR104 Support
1: SDR104 is supported.
0: SDR104 is not supported.
32
HwInit
SDR50 Support
1: SDR50 is supported.
0: SDR50 is not supported.
31-30
HwInit
Slot Type
This field indicates the type of slot used.
0b00: Removable Card Slot
0b01: Embedded Slot for One Device
0b10: Shared Bus Slot
0b11: Reserved
If the Shared Bus Slot is used (0b10), the SD card interface supports the Shared Bus
Control Register.
29
HwInit
Asynchronous Interrupt Support
The value of this bit is fixed at 1.
The asynchronous interrupt is supported.
28
HwInit
64-bit System Bus Support
The value of this bit is fixed at 0.
The 64-bit system bus support is not supported.
27
Rsvd
Reserved
26
HwInit
Voltage Support 1.8V
1: 1.8 V power supply is supported.
0: 1.8 V power supply is not supported.
25
HwInit
Voltage Support 3.0V
1: 3.0 V power supply is supported.
0: 3.0 V power supply is not supported.