Device Family: Intel® Stratix® 10

Type: Answers

Area: Component



Can the previous VREFP_ADC pin remain connecting to external 1.25V reference source although the pin name has been changed to GND in the current Intel® Stratix® 10 Device Pin-Out Files?

Description

Yes.  The VREFP_ADC pin for the external reference source of the on-chip voltage sensor in Intel® Stratix® 10 was defeatured and the pin name has been changed to GND in the current Intel Stratix 10 Device Pin-Out Files.  Even if the previous VREFP_ADC pin remains connecting to external 1.25V reference source, the Intel Stratix 10 device always uses the internal reference source and it won't cause any problems.  So If your existing board has connected the pin to external 1.25V reference source, you don’t need to modify it.  For new design, Intel recommends to connect the pin to GND.

The VREFN_ADC pin was also removed and the pin name has been changed to GND, though, since the pin was recommended to be connected to GND, you don't need to take care of it too.

Workaround/Fix

Although Intel Stratix 10 Device Family Pin Connection Guidelines version 2019.01.31 still mentions about VREFP_ADC pin and VREFN_ADC pin, you can ignore the descriptions and connect those pins to GND.  Intel Stratix 10 Device Family Pin Connection Guidelines will be fixed in future release.