pub type W = W<CrSpec>;
Register CR writer
CR
struct W { /* private fields */ }
Bit 0 - RTCEN
Bit 1 - RTCSRC
Bit 2 - LSIEN
Bit 3 - LSEEN
Bit 4 - CMPCLR
Bit 5 - LSESM
Bits 8:11 - RPRE
Bit 16 - ROEN
Bit 17 - ROES
Bit 18 - ROWM
Bit 19 - ROAP
Bit 20 - ROLF