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???
07/12/06 13:46
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 		 #120097 - Why not ...
Responding to: ???'s previous message
But why not have separate connectors?

Users would certainly not want to have one connector dangling in the air. Worse yet, dumb users might plug both of them in. Don't give the users the chance to make dumb mistakes.

What does the USB spec say about using the USB socket for non-USB purposes...?

Probably, nothing. As long as the device behaves according to the spec when it is connected to a USB host, it should not matter what it does when connected to something else as this is entirely outside the scope of the USB spec.

The arrangement of having mice/keyboards that can be plugged into either PS/2 or USB (via an adaptor) seems to be very common.



List of 28 messages in thread
TopicAuthorDate
Auto-detecting USB and PS2            01/01/70 00:00      
   Power            01/01/70 00:00      
      Power didn't tell            01/01/70 00:00      
         So it's on the same connector ?            01/01/70 00:00      
            I will try            01/01/70 00:00      
            Too long to detect            01/01/70 00:00      
            nope            01/01/70 00:00      
         Mechanical solution            01/01/70 00:00      
            Cable is fixed            01/01/70 00:00      
               How to do it.            01/01/70 00:00      
                  USB Expert            01/01/70 00:00      
            Why not ...            01/01/70 00:00      
         why not put the 'intelligence' into the adapter            01/01/70 00:00      
            Cost/complexity issues            01/01/70 00:00      
               then go the other way            01/01/70 00:00      
                  Still need hardware            01/01/70 00:00      
                     you\'ll need that anyhow, how else?            01/01/70 00:00      
            Agree with Chris            01/01/70 00:00      
               Which is why I suggested Cypress            01/01/70 00:00      
      float to ascii            01/01/70 00:00      
         Start a New Thread and ask again            01/01/70 00:00      
         start a new thread!            01/01/70 00:00      
   Doesn't seem to hard            01/01/70 00:00      
      D+ and D- is not differential at the begining            01/01/70 00:00      
      nope, II            01/01/70 00:00      
   re: autodetect            01/01/70 00:00      
   I bought on of these at radio shack.            01/01/70 00:00      
      speed detect            01/01/70 00:00      

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