Cristopher8

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  1. Cristopher8

    Zybo - USB3320

    Hi, I'm looking at the Zybo USB OTG Schematic and the USB3320 datasheet. I noticed that USB3320's REFCLK(USB_CLK_12M Net label is not connected another label) pin is not connected. I read in the datasheet that the refclk pin needs to be connected to the crystal. Can you explain why the REFCLK pin and the crystal are not connected?