Part Number:TAS6424E-Q1
Hello, when we set to "101", we found the current consumption increase(300mA) compare to the default setting, and TAS6424E itself become very hot, what's the reason? thanks!
Kailyn Chen:
Hello, you‘d better set the register settings while in Standby mode. Have TAS6424 entered the standby mode when you changed the register setting?
And attention should be paid that Bit 5 must be set to '1' before the device exits STANDBY.
That is to say, Standby mode and bit5 =1 at 0x28
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liujian zhang:
Hello, we setting the register follow your instruction, then i measure the output by audio precision, the result as below show: do we setting successfully? it seems have some problem, the output waveform same as before we not setting the register, would you pls give advise? thanks! and the current still become high.
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Kailyn Chen:
您好,为了方便沟通,我们可以直接使用中文。
您的问题是当输出相位调节之后,功耗增加,现在功耗问题解决了是吗?
目前您的问题是,改变相位之后,发现和原来波形相位相同,并未发生改变,是这个意思吗?
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liujian zhang:
谢谢!我的意思是功耗还是增加的,并且也没有看到任何的波形相位改变和以前设置之前的相比,这样的话是没有设置成功吗?设置的时候需要注意什么?有设置的步骤说明吗?谢谢!
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Kailyn Chen:
有尝试读取这个output phase寄存器的值确认是否已经写入进去?
配置的方法如下:
1. Standby mode and bit5 =1 at 0x28
2. Setting lower 2bit xx is for 1-0bit of Miscellaneous Control 2 Register
在配置完I2C的寄存器之后可以退出standby mode。
另外,TAS6424是一款数字I2S /TDM输入,PWM输出,从您的波形来看,输入是模拟信号呢?
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liujian zhang:
Hi, 我测试的波形是输出端,经过LC滤波后的,你的意思是需要直接测试LC滤波电路前面的PWM信号吗?输入我们使用的是TDM4, controller 内部产生的1KHz的正弦波输出到TAS6424E,谢谢!
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Kailyn Chen:
抱歉回复晚了。是的我的意思是直接测量芯片输出端。
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liujian zhang:
你好,我测试了设置phase out前与设置后的输出波形,如下所示,设置前后的输出频率发生了变化,这个有可能是原因导致的?谢谢!
设置前,2.1MHz
设置后,384KHz
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Kailyn Chen:
您好,您的意思是设置phase out寄存器后,输出频率发生变化了是么?
如果不设置phase out,频率发生改变吗?