Cypress FM4 Series - Extended Pin Function Setting Register 15 (EPFR15)

CHAPTER 12: I/O Port
674 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.23 Extended Pin Function Setting Register 15 (EPFR15)
EPFR15 register sets the function assignment to external interrupt pins.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
EINT31S
EINT30S
EINT29S
EINT28S
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
bit
23
22
21
20
19
18
17
16
Field
EINT27S
EINT26S
EINT25S
EINT24S
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
bit
15
14
13
12
11
10
9
8
Field
EINT23S
EINT22S
EINT21S
EINT20S
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
bit
7
6
5
4
3
2
1
0
Field
EINT19S
EINT18S
EINT17S
EINT16S
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
Register Function
[bit31:30] EINT31S: External Interrupt Input Select bits
Selects input for EINT31.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses INT31_0 at the input pin of EINT ch.31. [Initial value]
01
Same as Writing 00.
10
Uses INT31_1 at the input pin of EINT ch.31.
11
Uses INT31_2 at the input pin of EINT ch.31.
[bit29:28] EINT30S: External Interrupt Input Select bits
Selects input for EINT30.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses INT30_0 at the input pin of EINT ch.30. [Initial value]
01
Same as Writing 00.
10
Uses INT30_1 at the input pin of EINT ch.30.
11
Uses INT30_2 at the input pin of EINT ch.30.