AC:
  _modify:
    ACSR:
      access: read-write
  ACSR:
    _modify:
      ACIS:
        description: "Analog Comparator Interrupt Mode Select"
      ACO:
        access: read-only
    ACIS:
      _replace_enum:
        ON_TOGGLE: [0, "Interrupt on Toggle"]
        # Leaving [1, 'Reserved'] out
        ON_FALLING_EDGE: [2, "Interrupt on Falling Edge"]
        ON_RISING_EDGE: [3, "Interrupt on Rising Edge"]