Cypress FM4 Series - Extended Pin Function Setting Register 35 (EPFR35)

CHAPTER 12: I/O Port
732 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.40 Extended Pin Function Setting Register 35 (EPFR35)
The EPFR35 register assigns functions of MFS-I2S ch.1.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
Reserved
SDO1E
SDI1S
Attribute
-
R/W
R/W
Initial value
-
00
00
bit
23
22
21
20
19
18
17
16
Field
WS1B
SCK1B
MCK1E
MCK1S
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
Reserved
Attribute
-
Initial value
-
bit
7
6
5
4
3
2
1
0
Field
Reserved
Attribute
-
Initial value
-
Register Function
[bit31:28] Reserved: Reserved bits
0b0000 is read from these bits.
When writing these bits, set them to 0b0000.
[bit27:26] SDO1E: MI2SDO1 Output Select bits
Selects output for MI2SDO1.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce output of MFS-I2S ch.1 SDO. [Initial value]
01
Uses MI2SDO1_0 at the output pin of MFS-I2S ch.1 SDO.
10
Uses MI2SDO1_1 at the output pin of MFS-I2S ch.1 SDO.
11
Uses MI2SDO1_2 at the output pin of MFS-I2S ch.1 SDO.
[bit25:24] SDI1S: MI2SDI1 Input Select bits
Selects input for MI2SDI1.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce input of MFS-I2S ch.1 SDI. [Initial value]
01
Uses MI2SDI1_0 at the input pin of MFS-I2S ch.1 SDI.
10
Uses MI2SDI1_1 at the input pin of MFS-I2S ch.1 SDI.
11
Uses MI2SDI1_2 at the input pin of MFS-I2S ch.1 SDI.