Cypress FM4 Series - Page 639

CHAPTER 12: I/O Port
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 639
[bit9:8] SCK0B: SCK0 Input/Output Select bits
Selects input/output for SCK0.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses SCK0_0 at the input pin of MFS ch.0 SCK.
Does not produce output. [Initial value]
01
Uses SCK0_0 at the input pin of MFS ch.0 SCK.
Uses SCK0_0 at the output pin.
10
Uses SCK0_1 at the input pin of MFS ch.0 SCK.
Uses SCK0_1 at the output pin.
11
Uses SCK0_2 at the input pin of MFS ch.0 SCK.
Uses SCK0_2 at the output pin.
[bit7:6] SOT0B: SOT0 Input/Output Select bits
Selects input/output for SOT0.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses SOT0_0 at the input pin of MFS ch.0 SOT.
Does not produce output. [Initial value]
01
Uses SOT0_0 at the input pin of MFS ch.0 SOT.
Uses SOT0_0 at the output pin.
10
Uses SOT0_1 at the input pin of MFS ch.0 SOT.
Uses SOT0_1 at the output pin.
11
Uses SOT0_2 at the input pin of MFS ch.0 SOT.
Uses SOT0_2 at the output pin.
[bit5:4] SIN0S: SIN0 Input Select bits
Selects input for SIN0.
bit
Description
Reading
Reads out the register value.
Writing
00
Uses SIN0_0 at the input pin of MFS ch.0 SIN. [Initial value]
01
Same as Writing 00.
10
Uses SIN0_1 at the input pin of MFS ch.0 SIN.
11
Uses SIN0_2 at the input pin of MFS ch.0 SIN.
[bit3:0] Reserved: Reserved bits
0b0000 is read from these bits.
When writing these bits, set them to 0b0000.
Note:
− This register is not initialized by deep standby transition reset.