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    Navigation: All forums > Usb > Message List > Message Post

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    From: antti@c...
    Date: Tue, 28 Oct 2003 06:48:34 +0100
    Subject: RE: [usb] USB 1.1 PHY, DPLL question
    Top

    Marc,
    
    the singled ended and differential tranceiver outputs 
    just dont switch in sync, no way to argue about that.
    you can read any specs as long as you want.
    
    sure I have no way to directly measure it at the moment
    but the difference looks rather big to me. Maybe its
    because of my cables, etc... dont know. But under
    the circumstances where the single ended signals look as 
    bad that one thinks the transmittion could not work any 
    more it still works because signal on differential line is still ok.
    
    this the point I am trying to make.
    
    RCV signal is of better quality and I wanted to know why isnt
    it used to lock the DPLL.
    
    antti
    
    
    
     
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