[参考译文] TLV320AIC3105：右侧 DAC 路由到左侧通道

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https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1454671/tlv320aic3105-right-dac-routing-into-left-channel

器件型号：TLV320AIC3105

工具与软件：

考虑以下初始化代码：

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TLV320_Codec_WriteRegister(0x03, 0x10); //register 3   - Make sure PLL is disabled.
TLV320_Codec_WriteRegister(0x07, 0x0C); //register 7   - 48kHZ, Left-DAC data path plays left-channel input data, right DAC plays left-channel data.
TLV320_Codec_WriteRegister(0x0F, 0x28); //register 15  - Unmute left ADC PGA and set to 20dB.
TLV320_Codec_WriteRegister(0x10, 0x80); //register 16  - Mute right ADC PGA
TLV320_Codec_WriteRegister(0x13, 0x7C); //register 19  - Power up left ADC ONLY. do not connect LINE1L
TLV320_Codec_WriteRegister(0x25, 0xE0); //register 37  - Power up left and right DAC. HPLCOM is single ended output.
TLV320_Codec_WriteRegister(0x28, 0x80); //register 40  - Output common mode voltage = 1.65V
TLV320_Codec_WriteRegister(0x2B, 0x00); //register 43  - Unmute left DAC channel, gain=0dB
TLV320_Codec_WriteRegister(0x2C, 0x00); //register 44  - Unmute right DAC channel, gain=0dB
TLV320_Codec_WriteRegister(0x65, 0x01); //register 101 - CODEC_CLKIN uses CLKDIV_OUT
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

TLV320_Codec_WriteRegister(0x03, 0x10); //register 3   - Make sure PLL is disabled.
TLV320_Codec_WriteRegister(0x07, 0x0C); //register 7   - 48kHZ, Left-DAC data path plays left-channel input data, right DAC plays left-channel data.
TLV320_Codec_WriteRegister(0x0F, 0x28); //register 15  - Unmute left ADC PGA and set to 20dB.
TLV320_Codec_WriteRegister(0x10, 0x80); //register 16  - Mute right ADC PGA
TLV320_Codec_WriteRegister(0x13, 0x7C); //register 19  - Power up left ADC ONLY. do not connect LINE1L
TLV320_Codec_WriteRegister(0x25, 0xE0); //register 37  - Power up left and right DAC. HPLCOM is single ended output.
TLV320_Codec_WriteRegister(0x28, 0x80); //register 40  - Output common mode voltage = 1.65V
TLV320_Codec_WriteRegister(0x2B, 0x00); //register 43  - Unmute left DAC channel, gain=0dB
TLV320_Codec_WriteRegister(0x2C, 0x00); //register 44  - Unmute right DAC channel, gain=0dB
TLV320_Codec_WriteRegister(0x65, 0x01); //register 101 - CODEC_CLKIN uses CLKDIV_OUT

然后、

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TLV320_Codec_WriteRegister(0x39, 0x80); //register 57  - DAC_R1 to HPLCOM Volume Control @ 0dB
TLV320_Codec_WriteRegister(0x3A, 0x09); //register 58  - HPLCOM output level control, powered up, unmuted, 0dB.
TLV320_Codec_WriteRegister(0x2C, 0x80); //register 44  - Right DAC Volume Control - 0dB
TLV320_Codec_WriteRegister(0x3D, 0x90); //register 61  - DAC_L1 to HPROUT Volume Control @ -5dB
TLV320_Codec_WriteRegister(0x41, 0x1D); //register 65  - HPROUT Output, power up, not muted, high impedance on power-down.
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

TLV320_Codec_WriteRegister(0x39, 0x80); //register 57  - DAC_R1 to HPLCOM Volume Control @ 0dB
TLV320_Codec_WriteRegister(0x3A, 0x09); //register 58  - HPLCOM output level control, powered up, unmuted, 0dB.
TLV320_Codec_WriteRegister(0x2C, 0x80); //register 44  - Right DAC Volume Control - 0dB
TLV320_Codec_WriteRegister(0x3D, 0x90); //register 61  - DAC_L1 to HPROUT Volume Control @ -5dB
TLV320_Codec_WriteRegister(0x41, 0x1D); //register 65  - HPROUT Output, power up, not muted, high impedance on power-down.

在我看来、这似乎应该起作用。尝试将 HPLCOM 连接到左侧 DAC 时没有问题。我在 HPLCOM 上没有得到输出。

我的目标是在 HPLCOM 有一个固定的水平,在 HPROUT 有一个可变的水平。

我是让它做一些无法做的事情、或者我是否漏掉了某个地方的寄存器设置？

谢谢大家。

3 个月前