Cypress FM4 Series - Extension Function Pin Setting Register 03 (EPFR03)

CHAPTER 12: I/O Port
620 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.11 Extension Function Pin Setting Register 03 (EPFR03)
EPFR03 register sets the function assignment to the multi-function timer Unit2 pin.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
IC23S
IC22S
IC21S
Attribute
R/W
R/W
R/W
Initial value
000
000
00
bit
23
22
21
20
19
18
17
16
Field
IC21S
IC20S
FRCK2S
DTTI2S
Attribute
R/W
R/W
R/W
R/W
Initial value
0
000
00
00
bit
15
14
13
12
11
10
9
8
Field
Reserved
DTTI2C
RTO25E
RTO24E
Attribute
-
R/W
R/W
R/W
Initial value
-
0
00
00
bit
7
6
5
4
3
2
1
0
Field
RTO23E
RTO22E
RTO21E
RTO20E
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
Register Function
[bit31:29] IC23S: IC23 input select bits
Selects IC23 input.
bit
Description
Reading
Reads out the register value.
Writing
000
Use IC23_0 as the input pin of input capture IC23. [initial value]
001
Same as when writing 000
010
Use IC23_1 as the input pin of input capture IC23.
011
Setting is prohibited.
100
Use internal macro MFS ch.3 LSYN as input of input capture IC23.
101
Use internal macro MFS ch.7 LSYN as input of input capture IC23.
110
Setting is prohibited.
111
Setting is prohibited.