Accessing control registers over a data bus

摘要

An electronic apparatus that includes a controlled device with a plurality of control registers. A data bus is coupled between the controlled device and a processor, and an interface is configured to receive a plurality of portions of data read from or to be written to the plurality of control registers. The electronic apparatus also includes a correlation circuit configured to associate at least some of the plurality of portions of data with respective physical addresses of the plurality of control registers based on respective positions of the respective portions of data within the plurality.

主权项

1. An electronic apparatus, comprising:
a controlled device with a plurality of control registers; a data bus coupled between the controlled device and a processor; an interface configured to receive a plurality of portions of data read from or to be written to respective control registers in the plurality of control registers; and a correlation circuit configured to:
associate at least two portions of data in the plurality of portions of data with respective sequential virtual register addresses based on positions of the at least two portions of data within the plurality of portions of data; and associate the sequential virtual register addresses to respective non-sequential physical addresses of the respective control registers.