TLV320ADC6140: TLV320ADC6140

Hi,

A couple of clarification questions on the schematic:

1) The IOVDD voltage in default configuration, and the IO levels for the digital lines will be 3.3V, correct?

2) Since there is a MCLK connected, is the device being used in Master Mode?

The analog input connections seem fine (the supporting circuitry is ensuring that the input to the ADC is kept within 2Vrms).

Thanks and Regards,

Lakshmi Narasimhan

Hi：

（1）IOVDD默认3.3V电平；

（2）主时钟24M是预留，6140作为从模式使用，主时钟来源于SOC；

入下图所示，在使用MIC in输入时，采集不到信号。在使用line in时，信号采集正常。请帮忙看下是不是设置问题，谢谢。

Hi,

Does no signal detected mean that the digital data is all 0 or is there just noise floor with no mic signal?

Could you share your .ppc3 file? It will be easier to compare settings.

Are you using PPC3 with an EVM or connected to your custom PCB?

Thank you,
Jeff McPherson

1、PPC3搭配TLV320ADC6140IRTWR EVM使用。

2、目前的对话框中无法上传我的ppc3文件。你们有配置好ppc3软件分享给我吗？

3、在EVM板上，示波器没有测量到MCLK信号，请问是使用了TLV320ADC6140IRTWR内部的PLL生成时钟源吗？

Hi Wu,

All file types are accepted in this forum. Click "Insert" -> "Attach Image/video/file. Save your settings and the file extension is .ppc3

PLL source is BCLK.

Please answer my question from before: Does no signal detected mean that the digital data is all 0 or is there just noise floor with no mic signal?

Best regards,
Jeff McPherson