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A.23 Hall Effect Decode (HALLD)
The HALLD function decodes the sensor signals from a brushless motor, along with a
direction input from the CPU, into a state number. The function supports two- or threesensor decoding. The decoded state number is written into a COMM channel, which
outputs the required commutation drive signals. In addition to brushless motor applications, the function can have more general applications, such as decoding “option”
switches.
Figure A-30 shows all of the host interface areas for the HALLD function.
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