Cypress FM4 Series - Extended Pin Function Setting Register 08 (EPFR08)

CHAPTER 12: I/O Port
640 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.16 Extended Pin Function Setting Register 08 (EPFR08)
The EPFR08 register assigns functions of multi-function serial ch.4 to ch.7.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
CTS5S
RTS5E
SCK7B
SOT7B
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
SIN7S
SCK6B
SOT6B
SIN6S
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
SCK5B
SOT5B
SIN5S
SCK4B
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
SOT4B
SIN4S
CTS4S
RTS4E
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
Register Function
[bit31:30] CST5S: CTS5 Input/Output Select bits
Selects input for CTS5.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses CTS5_0 at the input pin of MFS ch.5 CTS. [Initial value]
01
Same as Writing 00.
10
Uses CTS5_1 at the input pin of MFS ch.5 CTS.
11
Uses CTS5_2 at the input pin of MFS ch.5 CTS.
[bit29:28] RTS5E: RTS5 Input/Output Select bits
Selects output for RTS5.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce output of MFS ch.5 RTS. [Initial value]
01
Uses RTS5_0 at the output pin of MFS ch.5 RTS.
10
Uses RTS5_1 at the output pin of MFS ch.5 RTS.
11
Uses RTS5_2 at the output pin of MFS ch.5 RTS.