Cypress FM4 Series - Extended Pin Function Setting Register (Epfrx)

CHAPTER 12: I/O Port
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 607
4.7 Extended Pin Function Setting Register (EPFRx)
The EPFRx register assigns functions to a pin if there is more than one function.
List of EPFRx Register Configuration
bit
31
0
Initial value
Attribute
Corresponding function
EPFR00
0x00030000
R/W
System function
EPFR01
0x00000000
R/W
Multi-function timer
EPFR02
0x00000000
R/W
EPFR03
0x00000000
R/W
EPFR04
0x00000000
R/W
Base timer
EPFR05
0x00000000
R/W
EPFR06
0x00000000
R/W
External interrupt
EPFR07
0x00000000
R/W
Multi-function serial
EPFR08
0x00000000
R/W
EPFR09
0x00000000
R/W
CAN/ADC trigger/QPRC
EPFR10
0x00000000
R/W
External bus
EPFR11
0x00000000
R/W
EPFR12
0x00000000
R/W
Base timer
EPFR13
0x00000000
R/W
EPFR14
0x00000000
R/W
QPRC/Ethernet-MAC
EPFR15
0x00000000
R/W
External interrupt
EPFR16
0x00000000
R/W
Multi-function serial
EPFR17
0x00000000
R/W
EPFR18
0x00000000
R/W
QPRC/SDCARD/HDMI-CEC
EPFR19
0x00000000
R/W
Reserved
EPFR20
0x00000000
R/W
External bus
EPFR21
0x00000000
R/W
Reserved
EPFR22
0x00000000
R/W
Reserved
EPFR23
0x00000000
R/W
Multi-function serial
EPFR24
0x00000000
R/W
I2S
EPFR25
0x00000000
R/W
CAN-FD
EPFR26
0x00000000
R/W
High-Speed SPI controller
EPFR27
0x00000000
R/W
HyperBus Interface
EPFR28
0x00000000
R/W
GDC Panel
EPFR29
0x00000000
R/W
EPFR30
0x00000000
R/W
Note:
− EPFRx register is not initialized by deep standby transition reset.