2 Replies Latest reply on Oct 13, 2012 10:33 PM by content.librarian

    SMBUS

    user_14586677

      The new module is advertised as a Slave, which would imply

         

      you cannot connect a slave to a PSOC and talk to it.

         

       

         

      However, the SMBUS spec, if I am not mistaken, allows two

         

      slaves to talk and interrogate each other. I have a tech case

         

      posted at www.cypress.com, will follow-up with what I learn,

         

      as the APIs do not seem to clearly indicate this.

         

       

         

      Regards, Dana.

        • 1. Re: SMBUS
          content.librarian

          I'm not aware of a specific mechanism for SMBus slaves to communicate with each other. Perhaps you're referring to the "Host Notify Protocol" which allows a slave to send messages back to the master. The purpose of that protocol is to allow a slave to send time critical messages back to the master without having to wait to be polled. I guess that protocol could be used in a system to allow slaves to communicate with each other, but that was not the original intent of that command.



          The SMBus/PMBus component datasheet (     http://www.cypress.com/?docID=39795) describes which protocols the component supports on page 25. Host Notify Protocol is not supported at this time.

          • 2. Re: SMBUS
            user_14586677

            I concur, I misinterpreted the language "a slave can take on the role of a master" as

               

            necessry condition to characterize a slave device's functionality.

               

             

               

            Still waiting for release of a master module in Designer.

               

             

               

            Rergards, Dana.