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

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