Subject: Re: [App_rpt-users] USB Controller requirment The CM108AH data sheet says it supports the "full speed mode" of USB 2.0. The full-speed mode is 12 Mb/s ? The USB 2.0 specification requires hubs to support high-speed mode. USB 2.0 devices are not required to support high-speed mode.? ? There is some app_rpt documentation saying any HUB you use should support 480 Mb/s? - no surprise since this is required by the USB2 spec. ? Ken ? -----Original Message----- From: pjgjunk@comcast.net To: 'app_rpt mailing list' <app_rpt-users@qrvc.com> Sent: Tue, Feb 16, 2010 8:09 am Subject: [App_rpt-users] USB Controller requirment Hi all, ? I thought I had read that USB 2.0 was required for the USB FOB, but I cannot fine it anywhere in the documentation.? Both systems I have showed that the FOB is running at 12 MHz. ? Should this be running at 480 MHz? ? # ./usbtree.pl /: Bus 04.Port 1: Dev 1, Class=root_hub, Drv=uhci_hcd/2p, 12M /: Bus 03.Port 1: Dev 1, Class=root_hub, Drv=ohci_hcd/2p, 12M ??? |_ Port 2: Dev 2, If 0, Prod=C-Media USB Headphone Set, Class=audio, Drv=snd-usb-audio, 12M ??? |_ Port 2: Dev 2, If 1, Prod=, Class=audio, Drv=snd-usb-audio, 12M ??? |_ Port 2: Dev 2, If 2, Prod=, Class=audio, Drv=snd-usb-audio, 12M ??? |_ Port 2: Dev 2, If 3, Prod=, Class=HID, Drv=usbfs, 12M /: Bus 02.Port 1: Dev 1, Class=root_hub, Drv=ohci_hcd/3p, 12M /: Bus 01.Port 1: Dev 1, Class=root_hub, Drv=ehci_hcd/5p, 480M ??? |_ Port 2: Dev 2, If 0, Prod=USB DISK 2.0, Class=stor., Drv=usb-storage, 480M ? I connected a storage device just to prove that the EHCI was functioning. ? Thanks, Paul ? ? _______________________________________________ App_rpt-users mailing list App_rpt-users@qrvc.com http://qrvc.com/mailman/listinfo/app_rpt-users