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Message
From: Uwe Bonnes<bon@e...>
Date: Tue Feb 10 13:12:23 CET 2004
Subject: [usb] USB HUB IPCore
>>>>> "Paal" == Paal Tamas <paal_to@f...> writes:
Paal> Hi, Is there anyone who ever thought about making a Full Speed USB
Paal> HUB IP core?
Paal> Why I need that?: I am developing a USB interface for a high
Paal> voltage device, and was thinking about a way, to galvanically
Paal> isolate the USB port (e.g. the PC) from the rest of the circuit.
Paal> I know, that there are this kind of gadgets on the market, but
Paal> they are a bit expensive for my application (200..300USD). I
Paal> thing the best way to do this, is to implement the USB device into
Paal> an FPGA, and isolate the signals from the FPGA to the SIE. I will
Paal> do this in the future, but now I have to keep my USB chip, and put
Paal> a (cheap) isolation outside the circuit. This isolator could be a
Paal> HUB implemented in an FPGA with isolated lines to the SIE(s).
With high voltage devices, you normally want fibre optic cables as
connections. I.m.h.o. USB is not the way to go. Perhaps use 1000 MBit fibre
Ethernet or use optical transceivers with the serial devices incorporated in
your FPGA.
Bye
--
Uwe Bonnes bon@e...
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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