Data Sheet

403
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
22.8.12 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 x denotes the number of the group.
Name: PMUXn
Offset: 0x30+n [n=0..15]+x*0x80 [x=0..2]
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 “I/O Multiplexing and Consider-
ations” on page 21.
Table 22-3. Peripheral Multiplexing Odd
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 “I/O Multiplexing and Consider-
ations” on page 21.
Bit 76543210
PMUXO[3:0] PMUXE[3:0]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset00000000
PMUXO[3:0] 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