On Sat, 4 Nov 2006 [EMAIL PROTECTED] wrote: > Hi > > Iam using ISP 1161 usb device controller in my board > > If i give get descriptor request for 1.1 specification devices its > giving only 8 byte info instead of 18 bytes and also the request is made > 3 times..
This is more or less normal. During the start of enumeration the host doesn't know whether the maxpacket value for endpoint 0 is 8, 16, 32, or 64 bytes. So the host asks for the device descriptor, and to be safe it stops the transfer after the first packet. I don't know why the request was made three times; that depends on the host. > And some slower memory sticks get descriptor request is made twice to get the > descriptor... > > > is that ok? or any thing is wrong ... Yes, it's okay. The host is allowed to ask for any descriptor it wants as many times as it wants. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
