Forum Discussion

Rainwang's avatar
Rainwang
Icon for Contributor rankContributor
2 years ago
Solved

How to do with unconstrained paths which is introduced by the JTAG and GSFI IP?

hi, My platform: 10AS016E4F29E3SG with Quartus prime pro V22.4 I realized a HPS system in my design and I use a GSFI IP to control the QSPI flash. both the logic and the HPS work well but there a...
Timing
Rainwang's avatar
Rainwang
Icon for Contributor rankContributor
2 years ago

hi,

GSFI means "Generic serial flash interface", which is a control interface IP to the QSPI flash,provided by Intel.

I instantiated it in my design to access my QSPI flash, and i found the 2 paths which were reported unconstrained are related to this IP.

For clocks in the customized logic, i added the constraints by myself; for most IP such as DDR controller, the constraints are added automaticlly; but i don't know why this IP report this warning, shall the user add the constraints by themselves?

below attached is my HPS system and the GSFI is red highlighted.

thanks.