Part Number: TAS2770EVM
We have multiple TAS2770EVM boards. One of these boards has stopped working. We use a 12 VDC 2A PSU and connect the board to a PC using the USB cable. We use the same PSU for another TAS2770EVM board and this board works fine. The boards have identical jumper settings. The defective board shows up in “Texas Instruments USB Audio Device Control Panel” as a two channel board with a sample rate of 8000 Hz. The working board shows up as an eight channel board with a sample rate of 48000 Hz. In PPC the defective board shows up and we can “Connect” to it as well as “Power up”. After about a minute, the defective board drops out, it is no longer connected in PPC and in “Texas Instruments USB Audio Device Control Panel”, it is also no longer connected. It helps to remove power from the board and power it up again. We are not able to playback audio through the defective board. The ASIO control panel hangs and the board drops out. We want to return it to Mouser but they have requested that you help us verify that the board is defective. Is there anything we can do to reset the board? Otherwise it must be defective. Do you have any idea what could cause such a defect? Maybe electrostatic discharge? What enclosures do you recommend for the board? Best regards, Kim
Our team will take a look at this case and will provide an answer as soon as possible.
Best regards,Luis Fernando Rodríguez S.
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Can you please open your system Sound Control Panel? Then double click on the device and select the Advanced tab, what I'd like to know is if you can select the format/sample rate from the drop down list.
Does using a different USB port makes a difference?
Best regards,-Ivan SalazarApplications Engineer - Low Power Audio & Actuators
In reply to Ivan Salazar:
I have tested the board three different PCs, different USB cables and different USB ports. It does not make any difference.In Windows Sound Control Panel I can select different formats and sample rates. However, the board always stops responding after about a minute. Then it shows as disconnected in PPC.
In reply to Kim Therkelsen:
If you have multiple boards, could you please follow the steps included in the User's Guide section 6?Please place the board with the problems as the secondary board, not the one connected to USB (only 1 board will be connected to USB)
If the above test works without any problems, then we can isolate and debug the controller side of the board.
If there is any trouble during the test, I'll ask you to check the IRQ flags at Device Control panel within PPC3 to check if there is any error being triggered.
Please let me know if you have any questions.
I have connected the boards. I have not tested VI sensing, only audio playback. When connecting a speaker to the right board (the defective board) and starting playback, the board works fine. It reproduces the left audio channel.
If you agree that the board is defective, we can send it back to you, and you can perform further debugging. Or do you think the problem can be fixed by somehow resetting the controller?
Let me share a tool and a straightforward procedure to reprogram the controller onboard. I'll send the material early next week.After that the board should work correctly.
Please connect your not working EVM and execute the attached application. Then please follow the instructions below:
After the process described above, try to configure the EVM using PPC3 as usual and play audio, please let us know if this works to make your EVM work normally.
Hi Ivan,I downloaded xMOS-HID-Control.exe. When running it I get this message:
I then downloaded and installed the LabVIEW run-time engine: ni-labview-2020-runtime-engine-x86_20.0_online_repack2.exeI rebooted my PC. However, xMOS-HID-Control.exe still claims that it cannot locate the LabVIEW run-time.I also tried installing the 64 bit version:ni-labview-2020-runtime-engine_20.0_online.exeHowever, that did not help.Which LabVIEW run-time should I install?
Attached is the runtime installer associated with this tool, please let me know if it works.
LabView Runtime Engine.zip
Unfortunately, it did not work. The message is the same.
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