EFM32WG Datasheet, PDF (760/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

...the world's most energy friendly microcontrollers
32.5.4 GPIO_Px_DOUT - Port Data Out Register
Offset
0x00C
Bit Position
Reset
Access
Name
Bit
31:16
15:0
Name
Reserved
DOUT
Data output on port.
Reset
Access Description
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
0x0000
RW
Data Out
32.5.5 GPIO_Px_DOUTSET - Port Data Out Set Register
Offset
0x010
Bit Position
Reset
Access
Name
Bit
31:16
15:0
Name
Reset
Access Description
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
DOUTSET
0x0000
W1
Data Out Set
Write bits to 1 to set corresponding bits in GPIO_Px_DOUT. Bits written to 0 will have no effect.
32.5.6 GPIO_Px_DOUTCLR - Port Data Out Clear Register
Offset
0x014
Bit Position
Reset
Access
Name
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
760
www.energymicro.com