OPENCORES.ORG

-----Original Message-----

What are the specs of your high voltage problem? 50V, 500V, 5000V, ...
Why not isolate the USB chip from the high voltage instead of trying to
isolate D+/D-?

Marc Reinig
System Solutions

> -----Original Message-----
> From: usb-bounces@o...
> [mailto:usb-bounces@o...]On Behalf Of Paal Tamas
> Sent: Monday, February 09, 2004 5:15 AM
> To: usb@o...
> Subject: [usb] USB HUB IPCore
>
>
> Hi,
>
> Is there anyone who ever thought about making a Full Speed USB HUB
> IP core?
>
> Why I need that?:
> I am developing a USB interface for a high voltage device, and was
> thinking about a way, to galvanically isolate the USB port (e.g. the PC)
> from the rest of the circuit.
> I know, that there are this kind of gadgets on the market, but they are
> a bit expensive for my application (200..300USD).
> I thing the best way to do this, is to implement the USB device into an
> FPGA, and isolate the signals from the FPGA to the SIE. I will do this in
> the future, but now I have to keep my USB chip, and put a (cheap)
> isolation outside the circuit.  This isolator could be a HUB implemented
> in an FPGA with isolated lines to the SIE(s).
>
> Please notify me, if you have a USB HUB IP core implementation in mind.
>
> Tom
>
>
>
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