PWM example for the 21489 EZ-Kit board - Doesn't Exist

Document created by analog-archivist Employee on Feb 23, 2016
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I have a question about Polarity Select Registers (PWMPOLx) for ADSP-214xx.
Currently, I am checking Page A-72 of HRM.
I want to clarify the meaning of "0 = Channel AL polarity 0" and "1 = Channel
AL polarity 1 (default)" which is described in Table A-40.

My understanding is as follows.
 "0 = Channel AL polarity 0" -> Active Low
 "1 = Channel AL polarity 1 (default)" -> Active High


Actually the bits “PWM_POL1AL” and “PWM_POL0AL” are “Write 1 to set” bits. For
example, if you would like to set the AL’s polarity to active high, you need to
set the bit PWM_POL1AL. Similarly to set the AL’s polarity to active low, the
bit PWM_POL0AL should be set.