21.9.4 Data Direction Toggle

This register allows the user to toggle the direction of one or more I/O pins, without doing a read-modify-write operation. Changes in this register will also be reflected in the Data Direction (DIR), Data Direction Set (DIRSET) and Data Direction Clear (DIRCLR) registers.

Tip: The I/O pins are assembled in pin groups (”PORT groups”) with up to 32 pins. Group 0 consists of the PA pins, group 1 is for the PB pins, etc. Each pin group has its own PORT registers, with a 0x80 address spacing. For example, the register address offset for the Data Direction (DIR) register for group 0 (PA00 to PA31) is 0x00, and the register address offset for the DIR register for group 1 (PB00 to PB31) is 0x80.
Name: DIRTGL
Offset: 0x0C
Reset: 0x00000000
Property: PAC Write-Protection

Bit 3130292827262524 
 DIRTGL[31:24] 
Access RWRWRWRWRWRWRWRW 
Reset 00000000 
Bit 2322212019181716 
 DIRTGL[23:16] 
Access RWRWRWRWRWRWRWRW 
Reset 00000000 
Bit 15141312111098 
 DIRTGL[15:8] 
Access RWRWRWRWRWRWRWRW 
Reset 00000000 
Bit 76543210 
 DIRTGL[7:0] 
Access RWRWRWRWRWRWRWRW 
Reset 00000000 

Bits 31:0 – DIRTGL[31:0] Port Data Direction Toggle

Writing '0' to a bit has no effect.

Writing '1' to a bit will toggle the corresponding bit in the DIR register, which reverses the direction of the I/O pin.
ValueDescription
0 The corresponding I/O pin in the PORT group will keep its configuration.
1 The direction of the corresponding I/O pin is toggled.