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Subject: RE: usb2 on the archos
From: Gvillo, Mike (MXG_at_dolby.com)
Date: 2003-09-10


Good post. I said Firewire was faster then USB 2.0 without knowing what
I was talking about.

        -----Original Message-----
        From: John Stevenson [mailto:steveo1967_at_yahoo.com]
        Sent: Wednesday, September 10, 2003 1:06 AM
        To: rockbox_at_cool.haxx.se
        Subject: RE: usb2 on the archos
        
        

        "Gvillo, Mike" <MXG_at_dolby.com> wrote:

                
                I wouldn't worry about it too much. To take the example
to the extreme
                the iPod has firewire which is much faster then USB 2.0
but you only
                really ever do huge upload/downloads once or twice,
making that feature
                fairly minor. When you do have to do a large transfer,
just set it up
                to go overnight. A usable interface is much more
important.
                
                I disagree with the point that firewire is quicker than
USB2.0.

                I am afraid it is not quicker, see table below for
differences in speed between different protocols

                 

Protocol MB/s
 IrDA-Control 0.009
 Serial 0.02
 Parallel 1.0
 Bluetooth 1.1 0.125
 Bluetooth 2 2 to 12
 USB 1.1 1.5
 USB 2.0 60
 SCSI 1 5
 Fast SCSI 2 10
 Fast Wide SCSI 2 20
 Ultra SCSI 20
 Ultra Wide SCSI 40
 Ultra2 SCSI 80
 Ultra 160 SCSI 160
 FireWire (IEEE 1394) 50
 FireWire (IEEE 1394b) 100

                Note 1394b is not that common yet!

                regards

                 

                John

                
                 

                
                
                
                
                
                

        
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