Embedded Software for SoC - Grupo de Mecatrônica EESC/USP

100 Chapter 8
2.
3.
The channel is a pure transactional model of the communication. It guards
the actual invocation of the slave operation until the communication
transactions are completed. Data are not circulating through the channel,
so far they are transmitted within the parameters of the operation. So only
the relevant information for an arbitration are given, such as the amount
of bytes to transmit, and the word size. If we refer to the simple bus
transactional interface defined in [5], a vista channel interface is quite
similar, only the parameters regarding the data transmission are discarded.
The channel can also contain a runtime modifiable configuration to analyse
a system performance. For example a bus channel can have a configurable
cycle rate, a FIFO channel may have a configurable depth. It may also
contain some measures from which reveling statistics can be extracted or
computed within the channel model.
The master access is used to encapsulate the invocation of a slave