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3.1. About this programmers model

The following information applies to the registers:

  • The base address is not fixed, and can be different for any particular system implementation. The offset of each register from the base address is fixed.

  • Do not attempt to access reserved or unused address locations. Attempting to access these locations can result in Unpredictable behavior.

  • Unless otherwise stated in the accompanying text:

    • do not modify undefined register bits

    • ignore undefined register bits on reads

    • all register bits are reset to a logic 0 by a system or power-on reset.

  • Access type in Table 3.1 is described as follows:


    Read and write.


    Read only.


    Write only.

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