Accesses to local store memory can be predicted down to the clock cycle.
Instruction 4 can be issued in the clock cycle immediately after instruction 3 because it does not require the result of instruction 3 to execute. You can visualize it like this.
Devadas has demonstrated that small circuits connected to the cores can calculate the allotment of bandwidth and switch the direction of the connections in a single clock cycle.
In addition to processor clock speed, another important processor performance metric is clock cycles per instruction (CPI).
It is more efficient to design a simple instruction set that enable the execution of one instruction per clock cycle.
Suppose that Enable is high, the counter counts up every clock cycle, and the frequency of the PWM output is the clock frequency divided by 2 count bits.