Generation Of VCCRCORE for Agilex FPGA

[emrahener]

Hi,

Can we directly use the same supply for VCCRCORE and VCCIO_PIO when we have only 1.2V supplies but some IO banks have non DDR4 io standards. (True Differential Inputs , 1.2V TTL outputs /Inputs).

According to following page :

https://www.intel.com/content/www/us/en/docs/programmable/683393/current/package-power-nets-and-subsystems-details.html

For VCCRCORE we see the following statement. ` Share with VCCIO_PIO when I/O is 1.2V`

In Intel Agilex Review worksheet we see 

`Transceiver core power supply. For use in Intel Agilex production devices only (placed here for migration purposes). 

Connect the VCCRCORE to 1.2 V power supply.

You have the option to source VCCRCORE from the same regulator as VCCIO_PIO only when you are using the DDR4 I/O standard with proper isolation filtering.`

Do you have a specification/ example for proper isolation filtering. Can we get any other supply as a reference for filtering circuit?

[Ash_R_Intel · Accepted solution]

Hi,

Would recommend you to check various Agilex Devlopment kits available. The installers for each of them provides you with useful documents like schematics, BOM etc.

Refer to the link:

Intel® Agilex™ FPGA Development Kits and Development Board | Intel

Also check the Pin Connection Guidelines for Agilex https://www.intel.com/content/www/us/en/docs/programmable/683112/current/device-family-pin-connection-guidelines.html

Regards