Техническая Спецификация для Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO

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Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
21.8.12 Peripheral Multiplexing n
There are up to 16 Peripheral Multiplexing registers in each group, one for every set of two subsequent I/O lines. The n 
denotes the number of the set of I/O lines, while the m denotes the number of the group. 
Name:
PMUXn
Offset:
0x30+n*0x1+x*0x80 [n=0..15] (x=0..1)
Reset:
0x00
Property:
Write-Protected
z
Bits 7:4 – PMUXO[3:0]: Peripheral Multiplexing Odd
These bits select the peripheral function for odd-numbered pins (2*n + 1) of a PORT group, if the corresponding 
PINCFGy.PMUXEN bit is one.
Not all possible values for this selection may be valid. For more details, refer to 
z
Bits 3:0 – PMUXE[3:0]: Peripheral Multiplexing Even
These bits select the peripheral function for even-numbered pins (2*n) of a PORT group, if the corresponding 
PINCFGy.PMUXEN bit is one.
Not all possible values for this selection may be valid. For more details, refer to 
Bit
7
6
5
4
3
2
1
0
PMUXO[3:0]
PMUXE[3:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Value
Name
Description
0x0
A
Peripheral function A selected
0x1
B
Peripheral function B selected
0x2
C
Peripheral function C selected
0x3
D
Peripheral function D selected
0x4
E
Peripheral function E selected
0x5
F
Peripheral function F selected
0x6
G
Peripheral function G selected
0x7
H
Peripheral function H selected
0x8-0xF
Reserved