CYUSB3014 LVDS interface

[Anonymous]

Hi,

   

        Does FX3 CYUSB3014 GPIO s support LVDS interface. Can we directly connect the LVDS outputs to GPIO pins?

   

We are exploring to interface an ADC LVDS outputs to the FX3 GPIO pins for data transfer. Kindly let us know

   

   Thanking you

   

   Sabiha

[Anonymous]

 Hi

   

Please check out the discussion in the following forum thread:

   

http://www.cypress.com/?app=forum&id=167&rID=63890

   

Thanks

   

Nikhil

[Anonymous]

Hi Sabiha,

   

Can you please add more details of your application to this thread.

   

Are you looking for serial LVDS or parallel LVDS?

   

What is the sampling frequency of ADC that you are planning to use.

   

FX3 has a flexible interface which can be configured to communicate with different types of devices.

   

It can handle both serial and parallel data streams. And the interface clock runs up to 100MHz.

   

Thanks,

   

sai krishna.

[Anonymous]

Hi,

   

         Thanks for the enquiry. 

   

The ADC output is 8-bit parallel LVDS differential data. So can we interface directly to FX3 CyUSB3014 GPIO inputs?

   

Thanking you

   

sabiha

[Anonymous]

HI,

   

     I forgot to furnish some more details to my previous mail.  The ADC  sampling frequency is 250MSPS. Can a GPIO pair be considered as diffrentail pair and be directly interfaced to the ADC without any level translator and differential to single ended conversion.

   

thanking you

   

sabiha

[Anonymous]

Hi,

   

No. FX3 cannot take any differential signals. Also, the maximum frequency that the CPU can toggle a pair of GPIOs at will be under 10 MHz.

   

But you can connect an ADC which gives normal 8/16/24/32-bit data to GPIF II of FX3. This interface runs at 100MHz clock.

   

Thanks,

   

Sai Krishna.