ABSTRACT
The microcontroller network can be looked as a single communications medium and multiple devices connected to this medium which can initiate message transfers and respond to messages directed towards them. In synchronous transfer, either a common clock signal exists between the transmitter and receiver, or the receiver is capable of deriving a clock signal from the transitions of the received data signal. A clock signal is needed to synchronize the receiver’s timing to the incoming serial data so that the receiver can latch each data bit. Asynchronous serial data is transmitted as frames. Synchronization is established on a frame-by-frame basis, and only for the duration of each frame. Data recovery depends on the transmission protocol that the transmitter and the receiver agreed to use. The baud rate can be looked on as the total number of bits per time that is transmitted in serial communication. The bit time is the reciprocal of the baud rate.
