Hi, I need to know which USB host controller chip will work with
isochronous USB data transfer

> Hi, I need to know which USB host controller chip will work with
> isochronous USB data transfer

What sort of host interface do you have in mind?  You need to give more 
information about your target system and requirements.  For example, do 
you need high-speed (480Mbps) or full-speed (12Mbps)?

	Andrew

>Hi, I need to know which USB host controller chip will work with
>isochronous USB data transfer
> This will be use with any USB webcam that works with high speed or full
speed but at the end the host needs to work at full speed, the idea is make
any high speed USB webcam to work at full speed

USB wcam wrote:
>> Hi, I need to know which USB host controller chip will work with
>> isochronous USB data transfer
>> This will be use with any USB webcam that works with high speed or full
> speed but at the end the host needs to work at full speed, the idea is make
> any high speed USB webcam to work at full speed

The other question is what software are you going to use to control the 
chip.  Writing a USB host stack is non trivial.  An NXP ISP1761 is a 
reasonable chip that supports all types of endpoint for which a Linux 
driver is available.

	Andrew

>>Hi, I need to know which USB host controller chip will work with
>>isochronous USB data transfer
>> This will be use with any USB webcam that works with high speed or
full
>speed but at the end the host needs to work at full speed, the idea is
make
>any high speed USB webcam to work at full speed
>This will be use as an embedded hardware, no Linux operating system, no
Microsoft* operating system at all

In article <1...@giganews.com>, 
w...@hotmail.com says...
> >Hi, I need to know which USB host controller chip will work with
> >isochronous USB data transfer
> This will be use with any USB webcam that works with high speed or full
> speed but at the end the host needs to work at full speed, the idea is make
> any high speed USB webcam to work at full speed

So you will use a web camera to grab single frame or much reduced
frame rate?

-- 
Paul Carpenter          | p...@pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/>;    PC Services
<http://www.pcserviceselectronics.co.uk/fonts/>; Timing Diagram Font
<http://www.gnuh8.org.uk/>;  GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
<http://www.badweb.org.uk/>; For those web sites you hate

>>Hi, I need to know which USB host controller chip will work with
>>isochronous USB data transfer
>> This will be use with any USB webcam that works with high speed or
full
>speed but at the end the host needs to work at full speed, the idea is
make
>any high speed USB webcam to work at full speed
>This will be use as an embedded hardware, no Linux operating system, no
Microsoft* operating system at all

On Aug 10, 12:47=A0pm, "USB wcam" <wjimen...@hotmail.com> wrote:

> >any high speed USB webcam to work at full speed
> >This will be use as an embedded hardware, no Linux operating system, no
>
> Microsoft* operating system at all

Practically all such embedded devices have an operating system,
embedded Linux, etc.

In message <6...@d34g2000vbm.googlegroup
s.com>, larwe <z...@gmail.com> writes
>On Aug 10, 12:47 pm, "USB wcam" <wjimen...@hotmail.com> wrote:
>
>> >any high speed USB webcam to work at full speed
>> >This will be use as an embedded hardware, no Linux operating system, no
>>
>> Microsoft* operating system at all
>
>Practically all such embedded devices have an operating system,
>embedded Linux, etc.

You mean most of the ones you know... not all of them do. In fact most
don't.

In any event you probably want something a lot smaller than Linux.
Besides the GPL license may be prohibitive.

The first question is surely what is the hardware do you have now? What
are you used to and what is the application domain?



-- 
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/

On Aug 10, 2:12=A0pm, Chris H <ch...@phaedsys.org> wrote:

> >> >any high speed USB webcam to work at full speed
> >> >This will be use as an embedded hardware, no Linux operating system, =
no
> >> Microsoft* operating system at all
>
> >Practically all such embedded devices have an operating system,
> >embedded Linux, etc.
>
> You mean most of the ones you know... not all of them do. In fact most
> don't.

If you mean what I think you mean, then my only rational reply is
"Bollocks". All of them have an operating system (or do you buy
appliances with an SDK and roll your own?). I admit I could have
listed a few more there but the point is that nobody with a quarter-
share of sanity or more would handroll a proprietary RTOS and write
his own USB host-side drivers. Life's too short, and there are just
too many good sources of the requisite IP.