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[参考译文] Linux/TLV320AIC3206:DAC 启动杂音

Guru**** 2392905 points
Other Parts Discussed in Thread: AM3352

请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/668165/linux-tlv320aic3206-dac-startup-pop-noise

器件型号:TLV320AIC3206
主题中讨论的其他器件:AM3352

工具/软件:Linux

您好,

我们将 AM3352与 AIC3206编解码器配合使用。 主要应用是采用以地为中心配置的耳机输出。

但我们在 DAC 打开/关闭时会弹出。 这是正常的吗?

以下是编解码器配置步骤:

驱动程序初始化:
[0.680755] aic32x6_write:reg:01 val:01 -->软件复位
[0.682281] aic32x6_change_page:new_page:01
[0.689422] aic32x6_write:reg:01 val:08 -> Setup A from Application Guide SLAA463B page 86
[0.699401] aic32x6_write:reg:02 val:00
[0.699768] aic32x6_write:reg:7B val:01
[0.700134] aic32x6_write:reg:7C val:06
[0.700500] aic32x6_write:reg:0A val:00
[0.700866] aic32x6_write:reg:03 val:00
[0.701202] aic32x6_write:reg:04 val:00
[0.701568] aic32x6_change_page:new_page:00
[0.701934] aic32x6_write:reg:3F val:14 -->设置 L/R DAC 数据路径和软步进

设备打开和回放:
[12.733154] aic32x6_change_page:new_page:01
[12.752410] aic32x6_write:reg:0C val:08
[12.858337] aic32x6_change_page:new_page:01
[12.876190] aic32x6_write:reg:0D val:08[
[12.987609] aic32x6_change_page:new_page:01
[13.006347] aic32x6_write:reg:10 val:00
[13.009155] aic32x6_write:reg:11 val:00
[13.114257] aic32x6_change_page:new_page:01
[13.228363]<6>:aic32x6_set_da_fmt Enter
[13.228393] aic32x6_change_page:new_page:00
[13.230346] aic32x6_write:reg:1B val:4C
[13.230712] aic32x6_write:reg:1C val:00
[13.231903] aic32x6_write:reg:1D val:08
[13.232391] aic32x6_hw_params:输入 rate:44100 i:14
[ 13.232421] aic32x6_write:reg:04 val:03 ->时钟和数据/接口设置
[13.232818] aic32x6_write:reg:1D val:01 -->
[13.233642] aic32x6_write:reg:05 val:21 -->
[13.234008] aic32x6_write:reg:06 val:07 -->
[13.234375] aic32x6_write:reg:07 val:14
[13.234771] aic32x6_write:reg:08 val:90
[13.235595] aic32x6_write:reg:0B val:08
[13.236419] aic32x6_write:reg:0C val:02
[13.236785] aic32x6_write:reg:0D val:00
[13.237152] aic32x6_write:reg:0E val:80
[13.238006] aic32x6_write:reg:12 val:08
[13.238830] aic32x6_write:reg:13 val:04
[13.239196] aic32x6_write:reg:14 val:40
[13.240051] aic32x6_write:reg:1E val:04
[13.240875] aic32x6_write:reg:1B val:4C[13.244873] aic32x6_write:reg:3C val:01
[13.245758] aic32x6_write:reg:3D val:01
[13.246124] aic32x6_change_page:new_page:01
[13.246490] aic32x6_write:reg:14 val:F2 ->头戴式电话启动设置
[13.246856] aic32x6_write:reg:01 val:0A -> AVDD 弱连接的 DVDD
[13.247222] aic32x6_change_page:new_page:00
[13.248077] aic32x6_write:reg:3F val:15--> L DAC -音频接口,R DAC -音频接口,软步进2 DAC 字
[13.248443] aic32x6_change_page:new_page:01
[13.248809] aic32x6_write:reg:7D val:13 -->以地为中心的模式,针对 HPL 和 HPR 的所有可能信号布线的直流偏移校正
[13.249877] aic32x6_change_page:new_page:00
[13.250793] aic32x6_write:reg:3F val:D5 -->为 L/R DAC 加电
[13.253601] aic32x6_change_page:new_page:01
[13.254455] aic32x6_write:reg:09 val:30 -->打开 HPL/HPR
[13.254943] aic32x6_change_page:new_page:00
[13.255828] aic32x6_write:reg:05 val:A1 -> Power On PLL
[13.256652] aic32x6_write:reg:0B val:88 ->打开 NDAC 电源
[13.257476] aic32x6_write:reg:0C val:82 ->通电 MDAC
[13.258300] aic32x6_write:reg:12 val:88 ->打开 NADC 电源
[13.259155] aic32x6_write:reg:13 val:84 -> Power on mAdc
[13.259979] aic32x6_write:reg:1E val:84 ->为 BCLK N 分频器加电
[13.260406] aic32x6_MUTE:输入 MUTE:0
[13.260955] aic32x6_write:reg:40 val:00 ->取消静音

  • 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

    您好、Claud、

    在 DAC 的上电/断电序列期间、器件的耳机输出可能会发出噼啪噪声。  

    对于此用例、我将再次检查此行为是否可以视为正常、并将尽快返回给您。

    此致、

     Diego Melendez López í a
      音频应用工程师