Simultaneous sampling ADC - FX2LP GPIF interface

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Anonymous
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 Dear Sirs

   

We are trying to implement a GPIF interface for a 8 Channel simultaneous sampling SAR ADC (TI ADS8568)     

   

The plan is to use the ADC in parallel interface mode (allow faster sampling) and stream data to a host PC via a FX2LP CY7C68013A-128.     

   

Although this is my first approach to USB micros, after reading some documentation available on the Cypress website, I was able to start a GPIF designer.     

   

The challenge appeared when trying to implement a single read, I run out of States.      

   

As it can be seems on the attached image (or ADS8568 datasheet) after a conversion signal the host must toggle the RD line eight times to gather the data from the 8 channel, but only 6 states are available.     

   

Any Ideas?     

   

Thanks in advance     

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Anonymous
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