USB Electrical Layout?


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  1. #1
    Join Date
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    Default Re: USB Electrical Layout?

    also, several articles show different Crystal frequencys, but one article stated USB requires a 48mhz crystal, I need to know what crystal I need.

  2. #2
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    Default Re: USB Electrical Layout?

    Quote Originally Posted by wdmagic View Post
    also, several articles show different Crystal frequencys, but one article stated USB requires a 48mhz crystal, I need to know what crystal I need.
    - About the Oscillator
    Datasheet Page 23, Section 2 and page 30 Section 2.3

    - Answer about the Pull Up Resistors
    Datasheet Page 169, Section 17.2.2.3 and 17.2.2.4

    - About the capacitor;
    Datasheet Page 170, Section 17.2.2.8

    You may also read this 3 Wiki articles;
    http://www.picbasic.co.uk/forum/content.php?r=377-usb

    Hope it helps!
    Thanks and Regards;
    Gadelhas

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