A.1. Signal properties and requirements

In order to ensure ease of integration of the ARM966E-S into embedded applications and to simplify synthesis flow, the following design techniques have been used:

These techniques simplify the definition of the top level ARM966E-S signals as all outputs change from the rising edge and all inputs are sampled with the rising edge of the clock. In addition, all signals are either input or output only, as bi-directional signals are not used.

Note

Asynchronous signals (for example interrupt sources) must first be synchronized by external logic before being applied to the ARM966E-S macrocell.

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