From ASICs to SOCs: A Practical Approach

3.4. Set-Top-Box SOC

In Chapter 1, we showed an example of a set-top-box SOC. The block diagram for this SOC is repeated here in Figure 3.5.

Figure 3.5. A Set-Top-Box SOC

In this SOC, typical traffic flow for cable applications is as follows:

• From video-processing unit to memory controller

• From memory controller to video-processing unit

• From I/O controller to memory controller

• From memory controller to display controller

For satellite applications, the traffic flow changes to:

• From Utopia interface to video-processing unit

• From video-processing unit to memory controller

• From memory controller to display controller

All of the above traffic goes through ...