HFNUM_FRNUM_SHIFT
& HFNUM_FRNUM_MASK) >> HFNUM_FRNUM_SHIFT;
(hfnum & HFNUM_FRNUM_MASK) >> HFNUM_FRNUM_SHIFT);
return (hfnum & HFNUM_FRNUM_MASK) >> HFNUM_FRNUM_SHIFT;
frame_number = (hfnum & HFNUM_FRNUM_MASK) >> HFNUM_FRNUM_SHIFT;