MIDI clock in running
  MIDI stop -> No clock running
  stop button -> No clock running
  
Analog clock in
  Reset
    When no more incoming pulse for ref ppqn ticks -> No clock running
  RUN
    Run signal low -> No clock running
    
Internal clock running*
  MIDI start -> MIDI clock in running
  stop button  -> No clock running
  RUN signal high -> RUN

No clock running
  press play -> Internal clock running
  MIDI start -> MIDI clock in running
  RUN signal high -> RUN
  analog pulse and reset type -> Reset