Are there any guidelines for driving VREFB pins when Intel® Arria®10 devices are powered off or during power sequencing?

Description

Yes, refer to the Guideline: Maximum Current Driving I/O Pins While Turned Off and During Power Sequencing in the Intel® Arria® 10 Core Fabric and General Purpose I/Os Handbook.

The guidelines in the section are also applicable to VREFB pins in Intel® Arria® 10 devices, even though VREFB pins are categorized as power pins in the Intel® Arria® 10 GX, GT, and SX Device Family Pin Connection Guidelines. 

Resolution

Follow the guidelines described in the Guideline: Maximum Current Driving I/O Pins While Turned Off and During Power Sequencing in the Intel® Arria® 10 Core Fabric and General Purpose I/Os Handbook for VREFB pins in Intel® Arria® 10 devices.