Jump to content
  • 0

JTAG-HS3 Vref source other than VCCO_0


Erik Zwartbol

Question

Hello All!

I am currently working on designing a carrier card for a board that uses a Zynq Ultrascale+ mpSoC (XCZU2CG) and we want to use the JTAG-HS3 to program the SoC via the carrier card. 

The HS3 datasheet states "To function correctly, the HS3’s Vref pin must be tied to the same voltage supply (VCCO_0) that drives the JTAG port on the FPGA." This 1V8 supply however is not available on our carrier board (it doesnt leave the SoC board).

We do have access to a 3V3 supply from the SoC board. Can the JTAG-HS3 function if we connect the Vref supply pin to a 1V8 LDO Regulator powered from the 3V3 of the SoC board?

 

Any help on this is much appreciated.

Link to comment
Share on other sites

2 answers to this question

Recommended Posts

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...