Intel® Hyperflex™ Architecture High-Performance Design Handbook

ID 683353
Date 10/04/2021
Document Table of Contents

5.2.11. Critical Chain Bits and Buses

The critical chain of a design commonly includes registers that are single bits in a wider bus or register bank. When you analyze such a critical chain, focus on the bus as a whole, instead of analyzing the structure related to the single bit. For example, a critical chain that refers to bit 10 in a 512 bit bus probably corresponds to similar structures for all the bits in the bus. A technique that can help with this approach is to mentally replace each bit index, such as [10], with [*].

If the critical chain includes a register in a bus where different slices go through different logic, then focus your analysis on the appropriate slice based on which register is reported in the critical chain.

Did you find the information on this page useful?

Characters remaining:

Feedback Message