Support for multiple USB CCID devices

[Gavin Williams]

Afternoon all

I'm currently looking at hardware req's for a new project, where we need to support 50 USB CCID devices on a single host.

The devices in question are OmniKey 6121 USB thumb drives, and will be connected to a 49 port Cambrionix USB hub, which contains 7 7-port hubs.

Is this something that the BeagleBoard-xM is likely to be able to support?

Thanks in advance for your time, and feel free to ask any questions.

Regards
Gavin

[Robert Nelson]

On Tue, Mar 25, 2014 at 10:18 AM, Gavin Williams <fatm...@gmail.com> wrote:
> Afternoon all
>
> I'm currently looking at hardware req's for a new project, where we need to
> support 50 USB CCID devices on a single host.
>
> The devices in question are OmniKey 6121 USB thumb drives, and will be
> connected to a 49 port Cambrionix USB hub, which contains 7 7-port hubs.
>
> Is this something that the BeagleBoard-xM is likely to be able to support?

Honestly, even on x86 with that many devices, you'll run out of usb
bandwidth on a single ehci port.

Go test it, it'll likely fail after 4-5 of those devices.

Regards,

--
Robert Nelson
http://www.rcn-ee.com/

[fatmcgav]

I feared as much...

Some testing on an old x86 desktop running CentOS 6 started showing issues after plugging in 20 OmniKey devices...

Any recommendations on what sort of hardware I should be looking for?

Cheers
Gav

--
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