Abit AN7 Computer Hardware User Manual


 
2-18 Chapter 2
(15). System Management Bus Headers
This header is reserved for system management bus (SM bus). The SM bus is a specific implementation
of an I
2
C bus. I
2
C is a multi-master bus, which means that multiple chips can be connected to the same
bus and each one can act as a master by initiating a data transfer. If more than one master simultaneously
tries to control the bus, an arbitration procedure decides which master gets priority.
AN7