1.8 Product design flow and documentation

You are required to perform several processes before using the CCI-550. To obtain the best performance, ARM recommends that you perform some of the implementation stages, including RAM integration, before integrating it into your wider SoC.

The processes are as follows:
The implementer configures and synthesizes the RTL.
The integrator connects the implemented design into a SoC. Integration includes connecting the design to a memory system, processors, and peripherals.
Final SoC implementation
The process of implementing the final, fully integrated SoC in silicon. ARM® can provide only guidance relevant to its own products for this process. If ARM provides guidance on this process for your product, then a separate document is included in the implementation bundle for that product.
Programming is the last process. The system programmer develops the software that is required to configure and initialize the CCI-550, and tests the required application software.
For information on the CCI-550 documents that provide information on these processes, see 1.8.1 Documentation.
Each process:
  • Is separate, and a different person can complete it.
  • Can include implementation and integration choices that affect the behavior and features of the CCI-550, and therefore the other tasks in the flow.
The operation of the final device depends on:
Build configuration
The implementer chooses the configuration options that affect the preprocessing of the RTL source files. These options usually include or exclude the logic that affects one or more of the features, the area, or the maximum frequency and performance of the resulting macrocell. For example, the implementer can control the number of outstanding transactions that each master and slave interface supports.
Configuration inputs
The integrator configures some features of the CCI-550 by tying inputs to specific values. These configurations affect the start-up behavior before you specify the software configuration. They can also limit the options available to the software. For example, the ACCHANNELENSx signal inputs prevent AC coherency requests from being emitted from an unconnected slave interface.
Software configuration
The programmer configures the CCI-550 by programming particular values into registers. These values affect the behavior of the CCI-550, for example, by enabling QoS features.
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