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Bianca last won the day on March 21

Bianca had the most liked content!

About Bianca

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    PCB, hardware, electronics, FPGA, power supplies, power electronics

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  1. Bianca

    Arty Z7 + DMMShield + MTDSShield

    Hi @kwilber, I'm sorry it turned to be such a challenge to interface the MTDS with the DMM Shield and Arty Z7 Indeed the CS form the SPI is used for the communication with the DMM Chip, also, the SPI is shared between the EEPROM and the DMM Chip. Just the CS are different. As for the swap between MISO and MOSI, it looks that we made a mistake and we are looking into it. I looked in the standard and it should be as it is on the Arty A7 and Arty S7. Thank you for letting us know. Best regards, Bianca
  2. Bianca

    Nexys 4 DDR with a new DDR2 chip

    Do you see any activity on UART leds? have you set correctly the com and the baud? Eitherway, if the led is on, this means that the mig has calib. Bianca
  3. Bianca

    Nexys 4 DDR with a new DDR2 chip

    @Kopart Please try running this project on your boards. I ran the project on boards with both ISSI and MIRA. The init calib pin is tied to Led0 so the LED should turn on as soon as the bit is loaded. The SDK project writes "hello world" to UART (9600 baud). Let me know how things turn out.
  4. Bianca

    Nexys 4 DDR with a new DDR2 chip

    Ok, so just to be sure I understand. You said in your first topic that you have two Nexys4-DDR with MIRA DDR and two with ISSI. The ones with ISSI fail to calibrate. And now you are telling that you have three boards, all with ISSI and one is working and two not. Can you please provide me the .bit file? Thanks, Bianca
  5. Bianca

    Nexys 4 DDR with a new DDR2 chip

    Hi @Kopart, I'm really sorry for this issue. Can you please provide me the serial number for both boards and tell me what DDR they have. I would need also a high resolution picture of both chips, so I can be capable to take the manufacturing details from them. If you can't obtain a good picture, can you please tell me what's written on the chip? Thanks, Bianca
  6. Hi @Scoop, The DAC is supplied by IOREF on the IOVDD. On the board you have three options to provide the IOREF 1. IOREF from arduino if you put a jumper in this position. (It's a voltage supplied by the arduino and you'll have to check the arduino schematic or specs for its value) 2. the 3V3 from arduino (Arduino has a 3V3 power supply and you can use it if you put the jumper on the position below 3. a +5V supply that is equipped on the board. (this is an internal power supply from the shield and you can use it as IOVDD if you put the jumper in the position below) You don't have the option to come with a voltage from outside, like a separate power supply. These three are your only settable options. Best regards, Bianca
  7. Bianca

    unable to connect to hw_server

    Hello @mmmtgo, Please install the cable drivers. If this doesn't solve the issue, please tell me what you see in device manager under USB when you connect the Basys3. Best regards, Bianca
  8. Bianca

    HS2 cable hot. Broken?

    Hi @paulgrangeray, Can you indicate where is the PCB becoming hot? Was it hot enough to melt the protection coat? Thanks, Bianca
  9. Bianca

    PYNQ-Z1 doesn't start

    Hi @naoya, You have a private message regarding this issue. Regards, Bianca
  10. Bianca

    FT232H chip configuration on the HS2 JTAG cable

    Hi @AlexB, You have a private message. Best regards, Bianca
  11. Hi @Marwan, For ISE Webpack, Xilinx will generate a separate free licence but you'll have to and register on the Xilinx website and download ISE from there. However, for Basys3 you will need Vivado since ISE supports until Spartan-6 and Basys 3 is already Artix-7. If you still have problems licencing, I suggest you to contact Xilinx since you'll get a faster answer than through us. They have a support section here: They also have a community forum and a service portal if your questions are not solved with the documentation they provided: Best regards, Bianca
  12. Bianca

    Some layout dimensions and coordinates for Arty-7 board

    HI @mishu, A am not sure which Arty-7 are you referring to, so I attached A7 and Z7. Since you wanted just the dimensions, I didn't export a step file. You have them in the documents attached. If you want the step file, let me know and I'll announce our mechanical engineer. I might take a few days, giving the fact that is weekend Best regards, Bianca Arty_Z7.pdf ArtyA7.pdf
  13. Bianca

    jtag-smt2 not recognized

    Hi @csong Can you show me a picture from your device manager.? Tell me if anything shows up when you connect the cable. Even Unknown device. If anythings shows, please tell me the Hardware ID under device manager, properties. Let me know what you find. Also, has the device ever work? Best regards, Bianca
  14. Bianca

    jtag-smt2 not recognized

    Hi @csong, Is you SMT2 on a board or you are just checking the module? You have to give it 3.3V from outside for the JTAG enumeration. It won't see the cable without that 3V3. On a system board it is expected for that to provide the reference voltage. If Vref pin is not powered, you won't have the device recognized. It's not enough to have VDD (pin 11) powered. You also need to have Vref (pin 9) . I hope this helps, Best regards, Bianca
  15. Bianca

    JTAG-HS2 firmware erased by accident

    Hi @Matthew, You have a private message with the solution. Best regards, Bianca