Cypress FM4 Series - Extended Pin Function Setting Register 33 (EPFR33)

CHAPTER 12: I/O Port
728 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
4.39 Extended Pin Function Setting Register 33 (EPFR33)
The EPFR33 register assigns functions of Smart Card Interface.
Register Configuration
bit
31
30
29
28
27
26
25
24
Field
Reserved
CLK1E
VCC1E
Attribute
-
R/W
R/W
Initial value
-
00
00
bit
23
22
21
20
19
18
17
16
Field
VPEN1E
RST1E
DATA1B
CIN1S
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
CLK0E
VCC0E
Attribute
-
R/W
R/W
Initial value
-
00
00
bit
7
6
5
4
3
2
1
0
Field
VPEN0E
RST0E
DATA0B
CIN0S
Attribute
R/W
R/W
R/W
R/W
Initial value
00
00
00
00
Register Function
[bit31:28] Reserved: Reserved bits
0b0000 is read from these bits.
When writing these bits, set them to 0b0000.
[bit27:26] CLK1E: IC1_CLK Output Select bits
Selects output for IC1_CLK.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce output of Smart Card Interface ch.1 CLK. [Initial value]
01
Uses IC1_CLK_0 at the output pin of Smart Card Interface ch.1 CLK.
10
Uses IC1_CLK_1 at the output pin of Smart Card Interface ch.1 CLK.
11
Uses IC1_CLK_2 at the output pin of Smart Card Interface ch.1 CLK.
[bit25:24] VCC1E: IC1_VCC Output Select bits
Selects output for IC1_VCC.
bit
Description
Reading
Reads out the register value.
Writing
00
Does not produce output of Smart Card Interface ch.1 VCC. [Initial value]
01
Uses IC1_VCC_0 at the output pin of Smart Card Interface ch.1 VCC.
10
Uses IC1_VCC_1 at the output pin of Smart Card Interface ch.1 VCC.
11
Uses IC1_VCC_2 at the output pin of Smart Card Interface ch.1 VCC.