TLV320AIC3104-Q1: 反馈电话音量低，请帮忙看下是否是硬件或者寄存器的配置问题

ian wu

Intellectual 750 points

Part Number: TLV320AIC3104-Q1
Other Parts Discussed in Thread: TLV320AIC3104

hi Ti enginner

现在的TBOX项目中使用TLV320AIC3104这款音频解码器，客户反馈电话音量低。请帮忙检查寄存器设置，看是否有问题，并给予整改建议。

电路方案为：4G模组输出PCM音频信号从音频接口输入，输出通道为RIGHT_LOP/M。

下图为EP+、EP-在空闲和电话接通状态下电平变化情况，附件中是初始化和拨打电话时寄存器操作。

部分代码配置如下：

TLV320AIC3104部分代码.txt

初始化TLV320AIC3104：
ret |= register_config(0x2, 0xaa);
 /* PLL Programming Register A */
 ret |= register_config(0x3, 0x91);
 /* PLL Programming Register B */
 ret |= register_config(0x4, 0xc0);
 /* Codec Data-Path Setup Register */
 ret |= register_config(0x7, 0x1e);
 /*Audio Serial Data Interface Control Register B*/
 ret |= register_config(0x9, 0x40);
 /*Audio Serial Data Interface Control Register C*/
 ret |= register_config(0xa, 0x01);
 /*Audio Codec Overflow Flag Register*/
 ret |= register_config(0xb, 0x81);
 /*Audio Codec Digital Filter Control Register*/
 ret |= register_config(0xc, 0x5f);
 /*Page 0/Register 16: Right-ADC PGA Gain Control Register*
 ret |= register_config(0x10, 0x50);
 /* MIC1LP/LINE1LP to Left-ADC Control Register */
 ret |= register_config(0x13, 0x04);
 // ret |= register_config(0x15, 0x0);
 /* MICBIAS Control Register */
 ret |= register_config(0x19, 0x86);
 /*  Left-AGC Gain Register */
 ret |= register_config(0x20, 0x00);
 /* Right-AGC Gain Register */
 ret |= register_config(0x21, 0x00);
 /* DAC Power and Output Driver Control Register */
 ret |= register_config(0x25, 0xc0);
 
 /* Left-DAC Digital Volume Control Register */
 ret |= register_config(0x2b, 0x00);
 /* Right-DAC Digital Volume Control Register */
 ret |= register_config(0x2c, 0x00);
 /* Right-DAC Digital Volume Control Register (continued) *
 ret |= register_config(0x2f, 0x00);
 /* HPLOUT Output Level Control Register */
 //ret |= register_config(0x33, 0x00);
ret |= register_config(0x33, 0x5b);
 /* 58: HPLCOM Output Level Control Register*/
 ret |= register_config(0x3a, 0x07);
 /* 64: DAC_R1 to HPROUT Volume Control Register */
 //ret |= register_config(0x40, 0x80);
 /* 65: HPROUT Output Level Control Register*/
 ret |= register_config(0x41, 0x0f);
 /* 72: HPRCOM Output Level Control Register */
 //ret |= register_config(0x48, 0x07);
 /*92: DAC_R1 to RIGHT_LOP/M Volume Control Register */
 /* ICALL��Ϊһֱ����*/
 //ret |= register_config(0x5c, 0x80);
 ret |= register_config(0x5c, 0x00);
 /* 9

拨打电话时：
ret |= register_config(0x13, 0x04);
 /* 46: PGA_L to HPLOUT Volume Control Register */
//ret |= register_config(0x2E, 0x00);
/* HPLOUT Output Level Control Register */
//ret |= register_config(0x33, 0x00);
 /* /Register 82: DAC_L1 to LEFT_LOP/M Volume Control Register */
ret |= register_config(0x52, 0x00);
/*92: DAC_R1 to RIGHT_LOP/M Volume Control Register */
ret |= register_config(0x5c, 0x80);

2 年多前