us2e_transition
us2e_transition(estar, ESTAR_MODE_DIV_2, clock_tick,
us2e_transition(estar, new_bits, clock_tick,
us2e_transition(estar, ESTAR_MODE_DIV_2, clock_tick,
us2e_transition(estar, new_bits, clock_tick,
us2e_transition(estar, new_bits, clock_tick * 1000,