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Thanks for your comment, Steve. Could you just elaborate a little on this "flip-flop" part?

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RE: USB isolation hub (Gordon, audioengr, John - input wanted) - audioengr 10:56:22 02/23/08 (0)
Flip-flop is a fundamental element of synchronous logic. It stores the state of a single bit. If the clock is recovered from the USB stream, then this clock can be used to clock the data bits through the flip-flop and then the stream can be re-encoded and re-transmitted. Not sure if this is what the device you have is doing, but possible. When you reclock this way, it can improve the edges by speeding them up, but it will not improve the timing. The jitter still gets worse as you put the stream through more stages of buffering or clocking.

Steve N.

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