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USB not working on 3254A chip set

balaji
Associate II

‎2005-02-03 01:34 AM

Posted on February 03, 2005 at 10:34

USB not working on 3254A chip set

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3 REPLIES 3
balaji
Associate II

‎2011-05-17 03:03 AM

Posted on May 17, 2011 at 12:03

I have designed a board with 3254A device. When I connect the USB cable from the PC to run the DEMO APP given by ST, the total WINDOWS hangs. I have designed as per the DK3200 demo kit schematics, means for USB I have provided a 7.5K pull-up on USD_D- line and removed the additional LM339 circuitry.

Can any one help me out in debugging why Windows OS hangs immediately upon connecting the 3254A hardware to the PC.

Kindly reply fast. Thanks

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balaji
Associate II

‎2011-05-17 03:03 AM

Posted on May 17, 2011 at 12:03

one month gone, since my query got posted. Even no reply from the moderator. :|

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hsanchez
Associate II

‎2011-05-17 03:03 AM

Posted on May 17, 2011 at 12:03

Hi.

I have my own design board with a uPSD3234 and USB works fine (change the sample code to compile with SDCC because I don't have Keil neither money to buy it).

You can contact me to discuss about our designs and sample code and try to figure what's going on.

Regards,

Hernán Sánchez

Medellín, Colombia

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