3.4 Set-Top-Box SOC

   

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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 the on-chip interconnect. The following example covers a detailed STB SOC with Sonics SiliconBackPlane as the on-chip interconnect.

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