ADS5562EVM: ADS5562EVM with TSW1405EVM Issue

Hi,

I will ask the software team about the "FTDI device cannot be opened to write data' error in HSDCPro.

By the way, the popup window for additional device parameters with entries for NCO and decimation is not used for this type of ADC.  I don't think it is hurting anything, but I would uncheck the enable box and close the window.   The entries for data rate and input frequency on the HSDCPro GUI main panel are enough, as there will not be anything to enter for decimation or NCO with this EVM.   But still, I don't think it is hurting anything.  just unnecessary.

But error messages from the HSDCPro are something I have to go to the software team to deal with.  May I ask what Windows OS is being used?  Is it Windows7?

Regards,

Richard P.

Richard,

I am not sure of his operating system. I will have to check. I will respond back as soon as I know.

Thanks for your help with this!

Richard Elmquist

Richard,

He is using Windows 7 Enterprise 64-bit.

Thanks for your help with this!

Richard Elmquist

Hi,

Should be no problem with that, then.   I have asked the software team about this specific error message, but our main contact person there is on travel so I will find his backup person next.

Regards,

Richard P

Richard,

Have you heard anything yet about this issue from the software engineers?

Can you give me a time frame? If you could, then I could let the customer know when they might be able to work on this.

Thanks for your help!

Richard Elmquist

Hi,

well, not yet.   One thing to check is that the USB port the customer is using is capable of supplying the power needed for the TSW1405.   Are the LEDs lit on the TSW1405?  Could they measure the voltages present at the supply clips on the TSW1405 and see that they are getting 5V into the board?  From there the board will regulate down to the other supplies needed for the FPGA.  Some USB ports on a PC might be unpowered.     If so, try a different USB port or clip an external 5V into the TSW.

Is the USB port a newer USB3.0 port?  if so, is there a regular USB2.0 port to try?

I might suggest a webex session where I could watch what the customer is doing on his PC, and then also go through a working setup on my PC. (Although I don't think I have that exact ADC EVM on hand at the moment.  I could use a similar EVM.)

Regards,

Richard P.

Hi,

just to follow up on myself, I expect the TSW1405 must be getting power from the USB cable.  On the TSW1400 it was possible to have the power cable off or missing and still connect to the USB port and identify the board even with the FPGA powered down.  But since the TSW1405 powers everything off the USB including the USB chip, if you are seeing the TSW1405 and identifying it and even identifying the firmware loaded then it must be all powered up.   Nevermind.   It still could be that the port isn't capable of supplying enough power for a capture, but I've not seen that happen.

I do not have an AD5562 EVM on hand in the lab.  But that EVM shares a common circuit board with a number of ADCs in the family, so I dug out one of my 14bit EVMs that fit that family and pretended it was an ADS5562.  I told HSDCPro that I was connecting to the ADS556x.   I connect, and I capture.   When I look at the time domain data I see the two lsb's flat since it is really only a 14b device, but it was all functional.   Please see attached.

For the customer's ADS5562 EVM, are they using the SPI GUI for it at all?  I suspect they are using the EVM jumpered for not using the SPI for configuration but rather are setting the mode of operation with jumpers.  The SPI GUI for that EVM is older, and doesn't install easily on Windows7 machines.   But I just wanted to be sure there wasn't a port or driver conflict somehow if they were using the old TI ADC SPI Interface GUI for the EVM.

Could I see how they have the EVM jumpered, please?  And again, I would suggest maybe a webex to see what is going on.

Regards,

Richard P.

Richard,

Thanks for your help!

I will filter your comments and send them to the customer.

I will also check and see if they would be willing to have a conference call.

Please email me separately and let me know the best times for a conference call next week.

Thanks again.

Richard Elmquist