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'[EE:] USB To Go?'
2004\01\05@115043 by Harold Hallikainen

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Anyone have any ideas for chips to use for USB To Go (or whatever it's
called) where there is no distinction between a host and client? FTDI says
they currently do not have plans to support this.

THANKS!

Harold

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2004\01\05@145137 by Andrew Warren

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Harold Hallikainen <.....PICLISTKILLspamspam@spam@mitvma.mit.edu> wrote:

> Anyone have any ideas for chips to use for USB To Go (or whatever
> it's called) where there is no distinction between a host and
> client? FTDI says they currently do not have plans to support this.

Harold:

It's called USB On-The-Go (OTG), and it's not so much that there's
"no distinction" between host and device, but that a pair of devices
can negotiate to determine which one will be the host.

Cypress makes a part called EZ-OTG; you can see some info at:

   http://tinyurl.com/2fkqh

If it's not too confidential, can you describe your application for
OTG?

-Andy

P.S.  That TinyURL points to:

   http://tinyurl.com/create.php?url=http://www.cypress.com/products
   /family.cfm?objectID=A6B8BB1A-BDB2-4175-8B47D1F27AEDBD27&foid=A6B
   8BB1A-BDB2-4175-8B47D1F27AEDBD27&catName=EZ%2DOTG&usecache=true

=== Andrew Warren -- aiwspamKILLspamcypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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2004\01\05@171115 by Harold Hallikainen

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THANKS Andrew! This is an embedded system that currently uses a laptop to
configure the system thru EIA232. The customer is looking at porting the
configuration code over to PDAs and USB. Our box and the PDA have to
figure out who's in control.

Harold


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2004\01\05@173605 by Andrew Warren

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Harold Hallikainen <RemoveMEPICLISTTakeThisOuTspammitvma.mit.edu> wrote:

> THANKS Andrew! This is an embedded system that currently uses a laptop
> to configure the system thru EIA232. The customer is looking at
> porting the configuration code over to PDAs and USB. Our box and the
> PDA have to figure out who's in control.

   They only need to figure that out if they're BOTH On-The-Go
   devices; if you know that your PDA will always have a USB host
   port, your box just needs a standard USB device controller.
   Similarly, if you know that the PDA will always have a USB device port, you'll need a host-capable chip in your box (the EZ-OTG chip will work fine), but you won't have to



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=== Cypress Semiconductor Corporation

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2004\01\05@175023 by Andrew Warren

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Sorry, hit SEND too soon.

Harold Hallikainen <RemoveMEPICLISTspamTakeThisOuTmitvma.mit.edu> wrote:

> THANKS Andrew! This is an embedded system that currently uses a
> laptop to configure the system thru EIA232. The customer is looking
> at porting the configuration code over to PDAs and USB. Our box and
> the PDA have to figure out who's in control.

   They only need to figure that out if they're BOTH On-The-Go
   devices; if you know that your PDA will always have a USB host
   port, your box just needs a standard USB device controller.
   Similarly, if you know that the PDA will always have a USB device
   port, you'll need a host-capable chip in your box (the EZ-OTG
   chip will work fine), but you won't have to do any of the OTG
   negotiation.

   -Andy

=== Andrew Warren -- aiwEraseMEspam.....cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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