Can we generate beep signal for Speaker output by giving PWM to Beep input of ADAU1781BCPZ CODEC
I'm not sure if I understand the question correctly. The BEEP pin is an analog input. If you feed a signal to it, and set the registers correctly to route that signal to the output, then it can be played on the speaker output. If you use a sine tone as an input, then a sine tone will be output. Likewise, if you use a PWM signal as the input, then that PWM signal will be output.
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