Cypress FM4 Series - Extended Pin Function Setting Register 23 (EPFR23)

CHAPTER 12: I/O Port
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 701
4.31 Extended Pin Function Setting Register 23 (EPFR23)
The EPFR23 register assigns functions of multi-function serial ch.6 to ch.7.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
Reserved
Attribute
-
Initial value
-
bit
23
22
21
20
19
18
17
16
Field
Reserved
Attribute
-
Initial value
-
bit
15
14
13
12
11
10
9
8
Field
SCS73E
SCS72E
SCS71E
SCS70E
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
SCS63E
SCS62E
SCS61E
SCS60E
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
Register Function
[bit31:16] Reserved: Reserved bits
0x0000 is read from these bits.
When writing these bits, set them to 0x0000.
[bit15:14] SCS73E: SCS73 Input Select bits
Selects input/output for SCS73. For TYPE3-M4, TYPE5-M4 products, set this bit with SCS7B of EPFR16.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce output of MFS ch7 SCS73. [Initial value]
01
Uses SCS73_0 at the output pin of MFS ch.7 SCS73.
10
Uses SCS73_1 at the output pin of MFS ch.7 SCS73.
11
Setting is prohibited.
[bit13:12] SCS72E: SCS72 Input Select bits
Selects input/output for SCS72. For TYPE3-M4, TYPE5-M4 products, set this bit with SCS7B of EPFR16.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce output of MFS ch7 SCS72. [Initial value]
01
Uses SCS72_0 at the output pin of MFS ch.7 SCS72.
10
Uses SCS72_1 at the output pin of MFS ch.7 SCS72.
11
Setting is prohibited.