TABLE LOOK UP AND INTERPOLATION ON THE TMS320C2XX

In digital motor control applications, table interpolation is an operation which is always performed, wheel round after round. The rapidity of the table interpolation conditions a correct working of the system, so the DSP should be able to do it as quickly as possible. Saving time for table interpolation will allow more possibilities for other software.

Different kinds of tables may be used: constant or non-constant steps, 2D or 3D, group of abscissa followed by the group of corresponding ordinates, and so on.

In order to help the customer to understand table interpolation, we have in this document presented different solutions for table look-up and interpolation. These solutions should be table size optimized, speed optimized, and precision optimized.

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