FieldDef

class FieldDef(name: str, lsb: int, width_bits: int = 1)

Bases: object

A contiguous bit field within a register (e.g. FieldDef("mode", lsb=3, width_bits=2) for bits [4:3]).

name: str

lsb: int

width_bits: int = 1

mask() → int

Bitmask covering this field’s bits (e.g. lsb=3, width=2 → 0b00011000).