HFNUM_MAX_FRNUM
hsotg->last_frame_num = HFNUM_MAX_FRNUM;
return ((frame2 - frame1) & HFNUM_MAX_FRNUM) <= (HFNUM_MAX_FRNUM >> 1);
((frame1 - frame2) & HFNUM_MAX_FRNUM) < (HFNUM_MAX_FRNUM >> 1);
return (frame + inc) & HFNUM_MAX_FRNUM;
return (frame + HFNUM_MAX_FRNUM + 1 - dec) & HFNUM_MAX_FRNUM;
return (frame & HFNUM_MAX_FRNUM) >> 3;