One big problem between frondend team and backend team is miscommunication. For example, to cut down power consumption, frondend team comes up a design with multiple clock domains as shown in below. Each clock domain can run at its own clock rate, as slow as possible. Even they run at the same clock rate, they are still asynchronous to each other to cut down the power and ease timing closure.
So far so good. Next we will see how BE timing constraint and DFT can mess up this asynchronously well partitioned design.
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