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tlv320aic3109 录音没有声音

user5342824
Prodigy 125 points


首先我用tlv320aic3109 播放音乐 是没问题的。

录音是没有声音的，但是录制的文件大小都正常

但是我用audacity 点一下录音再点一下播放之后。

再单独录音 ，录音就有声音了 ，怀疑是寄存器没有配置？

通过audacity控制时 把寄存器打开了？

谁有配置这个tlv320aic3109 录制打开的 寄存器正确配置么？

  • 0
    TI__Guru**** 185470 points
    您好，
    查看下
    page0， register37，bit 7 是0吗 --> powering down the DAC
    page0，register107,bit 3 是1吗--->enable the digital filter path way for the ADC
  • 0 回复 Amy Luo
    Prodigy 125 points
    额。linux 下 这个寄存器如何查看呢？
    这种可以么？
    nvidia@tegra-ubuntu:~$ sudo i2cdump -f -y 6 0x18
    [sudo] password for nvidia:
    No size specified (using byte-data access)
    0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
    00: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 ...??......?...?
    10: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 ?..xxxxxx?.?..?.
    20: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??...
    30: 00 00 00 04 00 00 00 00 00 00 04 00 00 00 00 00 ...?......?.....
    40: 00 04 00 00 00 00 00 00 04 00 00 00 00 00 00 00 .?......?.......
    50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    60: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?.........
    70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    80: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 ...??......?...?
    90: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 ?..xxxxxx?.?..?.
    a0: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??...
    b0: 00 00 00 04 00 00 00 00 00 00 04 00 00 00 00 00 ...?......?.....
    c0: 00 04 00 00 00 00 00 00 04 00 00 00 00 00 00 00 .?......?.......
    d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    e0: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?.........
    f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
  • 0 回复 user5342824
    TI__Guru**** 185470 points
    37换成16进制数是25，应该看20: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??...这一行的5列，即第6列
    107换成16进制数是6B，应该看60: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?.........这一行的第B列。
    把对应的寄存器配置一下，再试试看是否可以。
  • 0 回复 Amy Luo
    Prodigy 125 points
    还是没有声音
    37本来就是00
    107 我改成了04 ， 0000 0100 如下

    nvidia@tegra-ubuntu:~$ sudo i2cset -f -y 6 0x18 0x6B 0x04
    [sudo] password for nvidia:
    Sorry, try again.
    [sudo] password for nvidia:
    nvidia@tegra-ubuntu:~$ sudo i2cdump -f -y 6 0x18
    No size specified (using byte-data access)
    0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
    00: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 ...??......?...?
    10: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 ?..xxxxxx?.?..?.
    20: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??...
    30: 00 00 00 04 00 00 00 00 00 00 04 00 00 00 00 00 ...?......?.....
    40: 00 04 00 00 00 00 00 00 04 00 00 00 00 00 00 00 .?......?.......
    50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    60: 00 00 00 00 00 00 02 00 00 00 00 04 00 00 00 00 ......?....?....
    70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    80: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 ...??......?...?
    90: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 ?..xxxxxx?.?..?.
    a0: 00 00 00 00 00 00 00 00 00 00 00 80 80 00 00 00 ...........??...
    b0: 00 00 00 04 00 00 00 00 00 00 04 00 00 00 00 00 ...?......?.....
    c0: 00 04 00 00 00 00 00 00 04 00 00 00 00 00 00 00 .?......?.......
    d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
    e0: 00 00 00 00 00 00 02 00 00 00 00 04 00 00 00 00 ......?....?....
    f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

    配置完后 录音还是没声音
  • 0 回复 user5342824
    TI__Guru**** 295050 points
    您好，寄存器Register 15 是PGA Gain，增大PGA gain试试能否听到声音？
    另外，Register 25， MICbias 设置为2.5V。
  • 0 回复 Kailyn Chen
    Prodigy 125 points

    Register 15 是0F 00: 00 00 00 10 04 00 00 00 00 00 00 01 00 00 00 80 这个目前是0x80 
    Register 25 是19 10: 80 ff ff 78 78 78 78 78 78 06 00 fe 00 00 fe 00 这个目前是0x06 
    上面两个参数 会随我开启录制时发生变化，变成15变成00，增益为0db，25的06变成86
    我觉得可能不是增益问题，听起来像录制静音了一样，不是声音小。
    我只要打开 audacity，再关掉audacity ，录音就正常有声音了，所以怀疑是不是有初始化的参数我没有配置，通过打开audacity 将配置重新配置了一遍，然后就可以录音了。

    那么初始化都需要配置哪些寄存器？

  • 0 回复 user5342824
    TI__Guru**** 295050 points
    您好，不知您的问题解决了没，AIC3109的初始化顺序在下面这个帖子中有给出详细步骤：
    e2e.ti.com/.../710652

    1. Configure register coefficients for Clocks/PLL, Enable PLL if used, program digital audio format etc... power up DAC/ADC but keep muted.

    2. same as 1. but tag on AGC configuration, then enable AGC,


    3. Same as 2 but don't enable AGC, you can program AGC coefficients or not.


    4. same as 2 but don't enable the MIC input.

    ---------------------------

    general guidance for input/output setup
    after clocks/PLL/digital audio format are all configured, configure input/outputs。
    另外，这个帖子中给出了AIC3104的配置， 不同的是AIC3104 有两个ADC和DAC的相关配置， 可以去除，其他配置和AIC3109 差不多相同，可以参考下。希望您的问题能得以解决。