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USB Low-Full-High Speed Peripherals

Anonymous
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        Hi! I'm a freshman here. I encountered a problem when I using the cy3684 development board. The problem is that: When I inserted the GAL(U2) into the board, PC could not recognize the board; while everything is OK, when I took out the GAL from cy3684 board. I tried 3 GALs on the board, but neither of them is OK. Can anyone know what I say, and can anyone help me to solve the problem? Thank you!!!   
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Anonymous
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 Hi,

   

      What about MM0 and MM1 jumper settings?. Please refer to section 2.8 of EZ-USB Development Kit User Guide (http://www.cypress.com/?docID=27825) for more information about MM0 and MM1 jumper settings.

   

Thanks

   

Prajith

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Anonymous
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 Hi,

   

      What about MM0 and MM1 jumper settings?. Please refer to section 2.8 of EZ-USB Development Kit User Guide (http://www.cypress.com/?docID=27825) for more information about MM0 and MM1 jumper settings.

   

Thanks

   

Prajith

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Anonymous
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Thank you, PRJI!!! I will have try.

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Anonymous
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Hi,

   

I tried the four states of MM0 and MM1, but neither of them is OK to solve the problem. Can anyone else know how to sovle the problem?

   

Thanks

   

regards,

   

xuzhitao

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Anonymous
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 Hi,

   
           Was it working properly on the brand new board ? Try this with a different cy3684 development board to check whether this is a board issue. What is the error and VID/PID being displayed for different MM0/MM1 settings?    
   

       

   

Thanks

   

Prajith

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Anonymous
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Hi!

   

Sorry for late.

   

While i connected the board to PC using USB, i did not program the GAL. Is the reason that I should program the GAL before i connect the board to PC?

   

Thank you!

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Anonymous
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