TLV320AIC3254EVM-U Hardware device not connected.

Nicolas DAOUT

Hello,

In my company, we have 4 USB board TLV320AIC3254EVM-U.

2 are OK, and 2 do not work.

At the beginning, the 2 board were OK, the connection with PurePath Studio was OK, but after a few minutes (maybe a manipulation error in PurePath) the connection with the PC is lost, and I didn't manage to retrieve it.

On the 2 OK board, when I plug then on the PC, the LED is ON

On the 2 NOK board, the LED is OFF.

In purePath, the log is

Generating code for base_main_Rate44 .. assembling .....Done.

Build succeeded.
Hardware device not connected."

How can I reset these board ?

Thanks for your help,

over 12 years ago

0 Nicolas DAOUT over 12 years ago

Prodigy 20 points

My problem is solved now grace these link

http://e2e.ti.com/support/data_converters/audio_converters/f/64/p/121676/437053.aspx#437053

http://e2e.ti.com/support/data_converters/audio_converters/f/64/p/287388/1006499.aspx

0 J- over 12 years ago

TI__Mastermind 46195 points

Hi Nicolas,

For the TLV320AIC3254EVM-U boards that do not work, follow these steps to 'revive' them:

Get your USBfirmware files from http://www.ti.com/lit/zip/slac563.
Remove the board from the USB socket.
Short SDA and SCL lines by:
1. shorting U3 pins 5 and 6, or
2. shorting the sides of R6 and R7 that are connected to SCL and SDA.
Connect the EVM board to the USB socket.
After 5 seconds, remove the short. A 'Found new Hardware' wizard will appear. The driver is in the USBfirmware files obtained above.
Follow the instructions in AIC3254EVM-U Control Software (http://www.ti.com/lit/zip/slac349) under Tools > 'EEPROM Writer' > 'Upgrading the EEPROM from versions below 2.01'.
1. In the software, start on STEP 4 (Page 2: DFU driver).
2. In STEP 7 (Page 3: EEPROM Programming) of the software, ignore 'insert EEPROM jumper'.

Let me know if this helps.

Thanks,

J-

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TLV320AIC3254EVM-U Hardware device not connected.