Subject:
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Re: NXT - ARM7's and USB
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 8 Jan 2006 22:03:53 GMT
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Viewed:
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1381 times
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Michael Zapp wrote:
> In lugnet.robotics, Chris Magno wrote:
>
> > Im not a chip guru, can someone explain why the lego speck says the USB
> > is input only? The PDF's for the ARM7 chip set(s) this could be, state
> > the on board USB controller is bidirectional.
> >
> >
> > questions, questions, questions.....
>
>
> Hopefully an answer (I don't have 3...).
>
> The actual micro doesn't have the full hardware needed to implement
> communications. You still need to include transceiver/receiver hardware that
> acts as the bridge between the cable and the micro. Lego probably skipped the
> transceiver to cut costs.
or does Lego mean:
- the USB controler can transport data bidirectional (how can it
otherwise check the transmitted data)
and
- the USB controler is a Slave (can only be connected to a USB-Master,
in general something big as a PC)
Stef
>
> Michael
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Message is in Reply To:
 | | Re: NXT - ARM7's and USB
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| (...) Hopefully an answer (I don't have 3...). The actual micro doesn't have the full hardware needed to implement communications. You still need to include transceiver/receiver hardware that acts as the bridge between the cable and the micro. Lego (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
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