2.1.4 Timing Considerations

It is important to be able to generate the waveforms as precisely as possible. To do this, precise delays are needed. The number of clock cycles needed to delay for a certain number of microseconds is computed at compile time. When generating waveforms, some clock cycles are lost when pulling the bus low and when releasing the bus. These clock cycles are subtracted from the number of clock cycles needed to generate the delay. If the clock frequency is too low, this could generate a negative delay. A clock frequency higher than 2.17 MHz is needed to be able to generate the shortest delays.