frame number register
Register FNR reader
FNR
Locked
Receive data - line status
Receive data + line status
Field FN reader - Frame number
FN
Field LCK reader - Locked
LCK
Field LSOF reader - Lost SOF
LSOF
Field RXDM reader - Receive data - line status
RXDM
Field RXDP reader - Receive data + line status
RXDP