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Found 2 results

  1. 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.
  2. Vonmuller

    Working with Pmod DA4

    Good morning, I'm trying to program Pmod DA4, connected to Nexys 4 DDR, using VHDL. As refernce voltage I'm using the internal reference and the maximum output should be 5V, according to the AD5628 datasheet. However, my maximum output voltage doesn't exceed 2.5V. I wonder if I'm doing anything wrong or there is actually a AD5628-1 modification is used in Pmod DA4, that allows only 2.5V as the maximum output? How can I figure out what modification of AD5628 is used in Pmod DA4? Thank you in advance. Best regards, Alex dig2an.vhd