On Thu, Jul 31, 2003 at 08:43:41PM +0200, Miroslaw KLABA wrote: > On Thu, 31 Jul 2003 09:14:14 -0700 > Greg KH <[EMAIL PROTECTED]> wrote: > > > On Thu, Jul 31, 2003 at 08:29:41AM +0200, [EMAIL PROTECTED] wrote: > > > Hello, > > > > > > I was wondering what is the maximum baud-rate we can set on a > > > ttyUSB, if it's not limited by hardware (like a modem on the > > > other side). > > > And is it possible to use it by pppd? > > > Are there any limitation in this scheme? Where? > > > > It all depends on the driver that is bound to ttyUSBX. What > > device/driver are you using? > > It's to develop a new hardware based on generic USB2.0 chip like > Philips ISP1581 or Nec Fonction controller (I don't remember the > number exactly), and have a ppp server directly on the device > without any modem. The goal is to have around 50Mbits through > the cable. I'd prefer, if possible, use a generic USB serial driver. > If not, a new serial driver can be written to suit the needs.
I doubt that the generic driver can do speeds like that due to only sending one urb per usb frame. I suggest you create your own usb-serial driver for your device to take advantage of some techniques of getting better throughput (like what the empeg and visor drivers do.) Good luck, greg k-h ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
