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芯片TDA4VM没有下载程序，在测试芯片电压上电时序中，发现由TDA4VM管脚PMIC_POWER_EN1输出的到PMIC芯片TPS65941213的信号存在上电完成后又下拉然后上拉的过程。波形如下：
VCC5V是单板供电电源，PMIC_POWER_EN1是测试的波形
请您等待英文论坛的回复，将由资深的英文论坛工程师为您提供帮助：
e2e.ti.com/.../tda4vm-ball-number-g23-ball-name-pmic_power_en1-question-about-waveform-of-pmic_power_en1at-power-up-duration
