Intel® Quartus® Prime Standard Edition User Guide: Design Optimization

ID 683230
Date 11/12/2018
Public
Document Table of Contents

3.3.2.2. Global Network Buffers

Routing paths allow you to identify global network buffers that fail timing. Buffer locations are named according to the network they drive.
  • CLK_CTRL_Gn—for Global driver
  • CLk_CTRL_Rn—for Regional driver

Buffers to access the global networks are located in the center of each side of the device. Buffering to route a core logic signal on a global signal network causes insertion delay. Tradeoffs to consider for global and non-global routing are source location, insertion delay, fan-out, distance a signal travels, and possible congestion if the signal is demoted to local routing.

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