Part Number: TAS5720A-Q1
Can you look into an issue of TAS5720A-Q1?
An abnormal waveform is observed on SLEEP pin when turning power off. It can be observed simarly at both TAS5720A-Q1 EVM and customer's platform. Could you please explain why it happens?
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In reply to Dylan Yao:
In reply to Lee, Sam:
The SPK_SLEEP is a input pin, so the voltage level depends on customer DSP/Uc. i think customer followed datasheet guidance, put SPK_SLEEP to high before set SPK_SD to low. so the detailed steps would be:
1. DSP/Uc detected PVDD lower than a threshold
2. set SPK_SLEEP to high.
3. set SPK_SD to low, then PWM stop.
4. PVDD continue drop, and VDD also drop.
5. SPK_SLEEP high level drops with VDD.
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