Catering for Memory-Based Peripherals

Frozen Content

A design might feature one or more processors and a range of memory-based peripheral devices, all of which require access to the same physical memory. Figure 1 shows an example of using an Arbiter component to share access to a single physical memory device (SRAM) between a TSK3000A processor and a memory-based VGA TFT Controller. Notice that the VGA Controller has the highest priority and is defined to be the master with no delay. Giving it higher priority access to the memory will prevent effects such as screen flicker.

Figure 1. Sharing a single memory device between a processor and a memory-based peripheral.

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