4.5. Master to slave multiplexor

The master to slave multiplexor is used to connect all of the system bus masters to the bus slaves, using the current HMASTER number to select the bus master outputs to use. It is also used to generate the default master outputs when no other masters are selected. Figure 4.19 shows an interface diagram of the master to slave multiplexor module.

Figure 4.19. Master to slave multiplexor module interface diagram

Master to slave multiplexor module interface diagram

The module has the address, control and data outputs of all system bus masters as its inputs, and has a single set of these signals as its outputs, which are connected to the inputs of all system slaves. When masters are added to, or removed from the system, the input connections to this module must be altered to account for the changes.

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