Cypress FM4 Series - Analog Input Setting Register (ADE)

CHAPTER 12: I/O Port
606 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.6 Analog Input Setting Register (ADE)
The ADE register sets an external pin as an analog signal input pin of ADC.
Register Configuration
bit
31
0
Field
ADE
Attribute
R/W
Initial value
0xFFFFFFFF
Register Function
[bit31:0] ADE: Analog Input Setting Register
Sets as an analog signal input pin.
bit
Description
Reading
Reads out the register value.
Writing
0
Uses an external pin not as analog input but digital input/output.
1
Uses an external pin as analog input.
(An I/O cell will be in a state of input direction, input cut-off, and pull-up disconnection.)
Notes:
− This register sets analog input pins from AN31 to AN00.
− Each bit in the register sets each pin individually. There is a one-to-one correspondence between
bit assignment and the order of pins. For example, bit31 of ADE sets AN31, bit14 of ADE sets
AN14, and bit0 of ADE sets AN00. The port position of ANxx differs by each product.
For correspondence, refer to the Data Sheet of the product used.
− This register is not initialized by deep standby transition reset.