USB 2.0 High Speed PHY and transfer rate

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Hi,

I'm designing a USB thumb drive. I have selected 2 MCU - ST72681from ST
and CY768034 from Cypress for this application.

Both of them includes USB 2.0 PHY.

I'm using Samsung K9W8G08U1M 1G x 8bit NAND flash memory.

How to calculate the transfer rate in this case? R/W speed specified in
ST72681 is only 11MBps / 7MBps.