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PS-GTR USB3.0 Clock Freq

gge7

Hello

 

Thank you all for taking the time to read this.  I am a little confused but I think this will be easy to clear up.

On the IDT Clock Generator the original UltraZed IO Carrier had a 5P49V5935B521LTGI part listed with a frequency of 52MHz listed.  Now I saw in an eariler post that the part is really the 5P49V5935B536LTGI which from the custom Datasheet the frequency is 26MHz not the 52MHz that the original part listed had.  So is it 26MHz or 52MHz?

 

Please let me know and thank you for your help.

Gary

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    The 5P49V5935B521LTGI was supposed to have a 52MHz clock for the USB3.0 in its Configuration 3. However, we foubd out Configuration 3 was not programmed by IDT prior to shipping the device to us. Going forward, we will be using the 5P49V5935B536 device which has a 52MHz clock for the USB 3.0 interface in its Configuration 0. So in shoirt, we will be using 52MHz clock for the  USB 3.0 interface (although 26MHz is also a valid USB 3.0 clock).

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  • 0

    The 5P49V5935B521LTGI was supposed to have a 52MHz clock for the USB3.0 in its Configuration 3. However, we foubd out Configuration 3 was not programmed by IDT prior to shipping the device to us. Going forward, we will be using the 5P49V5935B536 device which has a 52MHz clock for the USB 3.0 interface in its Configuration 0. So in shoirt, we will be using 52MHz clock for the  USB 3.0 interface (although 26MHz is also a valid USB 3.0 clock).

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