Marcelo Puhl wrote:
>
>         Yes!  It was an was an hardware problem!
>         As I'm not using the EEPROM in my design, I didn't put that 10k pull-up resistor
> on the EEDATA pin. Now it is working 100%!
>         I managed to discover the pull-up problem when I 'piggy-backed' an EEPROM on
> my circuit. It started to work. W98 found the correct drivers.
>         Next, I pulled the EEPROM out from its socket and the problem didn't show.
>         If I don't use that pull-up resistor, W98 doesn't find the drivers!
>         I sent a suggestion to the support@ftdi telling them to include a comment in the
> next datasheet revision warning about that resistor!
>
>         Now I'm happy again, and my client too!
>
>         Mark
>

Try the newer "B" model. It allows open circuit EEPROM pins.

Much simpler to use too.

regards

Tony

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