4.1. About the ARM920T AHB wrapper

The ARM920T AHB wrapper interfaces between the ARM920T (or ARM922T) core and the AHB bus. The wrapper itself sits alongside the ARM920T core, intercepting the ASB bus from the core. An example higher-level module is also included. This shows how the core and wrapper can be connected, and is used by the synthesis scripts provided to allow the wrapper to be synthesized alongside a timing file for the core.

The wrapper intercepts both the ASB master bus (used during normal operation of the core) and the ASB slave bus (used during testing of the ARM920T core when the Test Interface Controller (TIC) is the current AHB master). Figure 4.1 shows a top-level block diagram of the ARM920T AHB wrapper.

Figure 4.1. ARM920T AHB wrapper block diagram

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