> > thanks.... but why 6MIPS and 48MIPS???? how are those number derived? > > i assumed for 12Mbps full speed??? that is about 1.5MByteps???? how > does it need 48Mips??? > > thanks if you can elaborate how you come up with those number??? thanks > >
http://www.sxlist.com/techref/ubicom/lib/io/dev/keys/usbdemo-mh.htm This code shows low-speed USB bit bang on an MCU running at 50 MIPS. In general this method could be implemented on any microcontroller clocking at 48 MIPS and above. To bit bang full speed USB you can use the same code, just find MCU running at 48 MIPS x 8. To do the byte-bang reduce the speed of MCU by 8. Probably for SL with internal buffers you do not need speed this high. I have no idea what you are trying to interface to USB. But anything below 40 MIPS is good only for keyboards and mice. Printers, cameras and flash disks need more speed. Regards. Michael ------------------------------------------------------- This SF.NET email is sponsored by: Take your first step towards giving your online business a competitive advantage. Test-drive a Thawte SSL certificate - our easy online guide will show you how. Click here to get started: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0027en _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
