Introduction - If you have any usage issues, please Google them yourself
Dual frequency many times: even several times frequency should be more familiar with all the sub-frequency, through the counter count is entirely achievable. Such as N times the frequency of even-numbered points, it can be sub-frequency by the clock counter counts the trigger, when the counter counts from 0 to N/2-1, the output clock to flip, and a reset signal to the counter, making the next a clock counting to start from scratch. This cycle continues. This method can be achieved even at arbitrary frequency.