Introduction - If you have any usage issues, please Google them yourself
without the expense of discrete logic, programmable logic, or a full-custom silicon device of any digital design, in order to successfully operate, reliable clock is very critical. The poor design of the clock, the limits of temperature, voltage or manufacturing process of the deviation would lead to wrong behavior, and debugging difficulties, costing much. The design PLD/FPGA usually use several types clock. The clock can be divided into the following four types : global clock, clock gating, multi-level logic clock and volatility clock. Multi-clock system to include the above four types of arbitrary clock portfolio.