L2340

The L2340 converts Polar (Phase and Magnitude) data into Rectangular (Cartesian) coordinates.  The userselects the numeric format.  A valid ransformed result is seen at the output after 22 clock cycles and will continue upon every clock cycle hereafter.

15-bit amplitude and 32-bit phase data are input into the L2340 to produce an output of 16-bit rectangular data.  The user may select the data format to either 16-bit offset binary or 15-bit u nsigned magnitude format.  High accuracy phase increment values with  minimal accumulation error is accom- plished by use of a 32-bit phase accumulator.

The phase accumulator structure supports frequency or phase modula- 1-0 and ion and is selected by ENP accumulator controls FM and PM.