Datasheet

Table Of Contents
14.8.1 Control A
Name:  CTRLA
Offset:  0x00
Reset:  0x00
Property:  PAC Write-Protection, Write-Synchronized
Bit 7 6 5 4 3 2 1 0
SWRST
Access
R/W
Reset 0
Bit 0 – SWRST Software Reset
Writing a zero to this bit has no effect.
Setting this bit to 1 will reset all registers in the GCLK to their initial state after a Power Reset, except for
generic clocks and associated Generators that have their WRTLOCK bit in PCHCTRLm set to 1.
Refer to GENCTRL Reset Value for details on GENCTRL register reset.
Refer to PCHCTRL Reset Value for details on PCHCTRL register reset.
Due to synchronization, there is a waiting period between setting CTRLA.SWRST and a completed
Reset. CTRLA.SWRST and SYNCBUSY.SWRST will both be cleared when the reset is complete.
Value Description
0
There is no Reset operation ongoing.
1
A Reset operation is ongoing.
SAM D5x/E5x Family Data Sheet
GCLK - Generic Clock Controller
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 162