[beagleboard] Support for multiple USB CCID devices
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 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Support for multiple USB CCID devices
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 On 25 March 2014 15:22, Robert Nelson robertcnel...@gmail.com wrote: On Tue, Mar 25, 2014 at 10:18 AM, Gavin Williams fatmc...@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/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/XLexmHdQZTQ/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Support for multiple USB CCID devices
On Tue, Mar 25, 2014 at 10:18 AM, Gavin Williams fatmc...@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/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
