State of Unused I/O pins and design of isolation filter for Cyclone IV FPGA

Dear sir,

Q1. I used PDN for VCCINT power supply. PDN tool suggested 22nF(1No.) & 1uF(1No.) capacitors.

Please clarify, the suggested capacitors by PDN tool are for a single VCCINT power pin or for all VCCINT power pins of FPGA. In my FPGA there are 28 VCCINT pins.

Q2. I am not going to use any PLLs inside FPGA.

Do I still need to use Ferrite bead between VCCINT & VCCD_PLL or if I put the suggested decoupling capacitors by PDN tool for each VCCINT & VCCD_PLL is enough.

Q3. Similarly, for VCCA pins, as I am not using any PLLs inside FPGA, do I still need to use Ferrite bead between Linear regulator output & VCCA or the suggested decoupling capacitors by PDN tool is enough for each VCCA pin

Please clarify.

Regards,

Thulasi