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Altera_Forum
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16 years ago

FPGA -> FX2 USB2.0 bulk/isoc

Hello,

Maybe this is not the correct place to post this question, but maybe someone here has worked wiht the FX2 of cypress.

I have already implemented Bulk transfers input/output.

I can transfer one image that was processed by my FPGA.

Now I want to optimize my design, to transfer images in real time (25fps).

My question is:

Do I need to use Isochronous transfers?,

In the application note 4053, cypress people said "Bulk endpoints can provide a greater maximun throughput than isochronous endpoints with a trade off that the bandwidth is not guaranteed"..."BULK DATA TRAFFIC CAN BECOME BURSTY WHEN THERE IS ADDITIONAL DATA TRAFFIC ON THE USB",

If I do not have more USB peripherals, it will not be bursty, and can be faster?.

Thank you.

DABG
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