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???
05/05/05 07:11
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 		 #92965 - Some reference circuits I've looked at
Responding to: ???'s previous message
Erik, Russel,

Below, you can find some links to circuits I took as a reference. As you will see, they also directly output the port pins to the 'outside world'.

http://www.pjrc.com/tech/8051...matic.html
http://www.standardics.philips.com/support/b...ematic.pdf

What would be the reasoning behind this? Why would they allow a direct connection from outside to (some of) the ports?

Since those are professional developments, I took those as an example for my situation. Did I take the wrong examples?


Best rgds,

--Geert

List of 40 messages in thread
TopicAuthorDate
Your opinion about port config pls.            01/01/70 00:00      
   Its irrelevant            01/01/70 00:00      
      Can you clearify pls?            01/01/70 00:00      
         always            01/01/70 00:00      
   More....            01/01/70 00:00      
      Elementary, my dear Watson            01/01/70 00:00      
   Some reference circuits I've looked at            01/01/70 00:00      
      fittness for purpose            01/01/70 00:00      
         I'd second that            01/01/70 00:00      
         The intention is...            01/01/70 00:00      
            on-board, I hope            01/01/70 00:00      
               I2c is forbidden to leave the board...            01/01/70 00:00      
                  I would'nt            01/01/70 00:00      
   The outside world            01/01/70 00:00      
      Sure, you did! ;-)            01/01/70 00:00      
         Multi controller approach.            01/01/70 00:00      
            Some practical restrictions...            01/01/70 00:00      
               concentrate the data            01/01/70 00:00      
               Something like this.            01/01/70 00:00      
                  maybe not needed            01/01/70 00:00      
                     RS485 Stubs.            01/01/70 00:00      
                        two of the same            01/01/70 00:00      
                           Re: Two of the same.            01/01/70 00:00      
                              you are right            01/01/70 00:00      
                  let Geert do it differently            01/01/70 00:00      
                     on data and star            01/01/70 00:00      
                        bus and star            01/01/70 00:00      
                     I prefer 75176 -> RS485 & 75179 -> RS422            01/01/70 00:00      
                        I've got a lot of 75176s in my drawer :)            01/01/70 00:00      
                           What about CAN?            01/01/70 00:00      
                              CAN            01/01/70 00:00      
                                 CAN            01/01/70 00:00      
                                    CAN CAN            01/01/70 00:00      
                                 Challenges, indeed...            01/01/70 00:00      
                                    I would            01/01/70 00:00      
                                    how about Power Line Communications?            01/01/70 00:00      
                                       X10-alike, I suppose?            01/01/70 00:00      
                                          Ya..            01/01/70 00:00      
                                             Always welcome...            01/01/70 00:00      
                                             oops !!!            01/01/70 00:00      

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