Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAME51J19A/CCL/SEQCTRL[0]#0x0
SEQSEL=DISABLE
SEQ Control x
Sequential Selection
0 (DISABLE): Sequential logic is disabled
1 (DFF): D flip flop
2 (JK): JK flip flop
3 (LATCH): D latch
4 (RS): RS latch
https://github.com/cmsis-svd/cmsis-svd-data