F-tile Reference and System PLL Clocks: mising port documentation

Hello,

Q1- Can out_coreclk_i used to drive IOPLL?

<ANS> No. out_coreclk_i is not routed through dedicated clock paths required by IOPLL.

Q2- Is there workaround to indirectly use out_coreclk_i for IOPLL reference?

<ANS> a. Use Clock Control IP.

b. Use dedicated clk routing.

Q3- Fitter error and HSSI_PLDADAPT_RX

<ANS> error is due to placement constraints and routing limitation between HSSI components and core logic. In your case, HSSI_PLDADAPT_RX is constrained to a specific region, but the core logic needs to connect to is placed elsewhere, and there is no valid routing path. Please review your location constraints. Avoid using out_coreclk_i for clocking components that require dedicated routing.

Q4- Can altera_fifo be driven by out_coreclk_i ?

<ANS> yes, they are not dependent on IOPLL reference. FIFO IP is designed to work with fabric routing.

regards,

Farabi