Device Migration Guidelines: Agilex™ 5 FPGAs and SoCs E-Series

ID 813955
Date 4/01/2024
Public
Document Table of Contents

3.6.4.2. HVIO PLL as Secondary System PLL

The HVIO PLL can be used as a secondary system PLL for devices with one GTS transceiver bank per device. The reference clock pin to this HVIO PLL (HVIO PLL Reference clock) is different to the reference clock pin used for the system PLL (HVIO SysPLL Reference clock).

In order to allow migration between devices with multiple banks to a device with a single transceiver (A5E008 and A5E013) that requires two system PLLs, where the second system PLL is routed from HVIO PLL, you need to connect the HVIO PLL reference clock pin out on the bigger device. This is to enable the physical HVIO PLL reference clock pin to be available on the board when migrating to the mentioned smaller devices. Refer to the Agilex™ 5 Device Pin-Out Files for the HVIO PLL Reference clock pin location.