pcm 1862的寄存器配置问题 求助

需求背景：PCM1862 作为slave模式 ；

                  ADC 模拟MIC采集信号，IIS 输出

                  IIC控制1862

问题描述：

                 设置寄存器之后没有声音输出（  IIC功能测试Ok）

代码：

 ADC_WriteReg(0x00, 0xff);//reset registers
 sys_mdelay(1);

		
/*Set I2S Slave mode, ADCclk_sourse SCK_MCLK  */
ADC_WriteReg(PGA_SWITCH_REG,PGA0);
ADC_WriteReg(CLK_SET,0x41);

/*set analog mic input mode*/
 Input_Sourse = 0x20;
ADC_WriteReg(ADC1L_INPUT_SEL,Input_Sourse);

 ADC_WriteReg(ADC1R_INPUT_SEL,Input_Sourse);

 ADC_WriteReg(ADC2L_INPUT_SEL,Input_Sourse);
 
ADC_WriteReg(ADC2R_INPUT_SEL,Input_Sourse);

/*BCK set to 64;    Current Sampling Frenquency set to 48khz*/
// ADC_WriteReg(0x72,0x04);                
ADC_WriteReg(0x73,0x03);        
ADC_WriteReg(0x74,0x32);       
/*set channel gain to max +40db*/      
ADC_WriteReg(PGA_CONTROL_MANUAL,0xFF); 
ADC_WriteReg(PGA_VAL_CH1_L,0x50); 
ADC_WriteReg(PGA_VAL_CH1_R,0x50); 
ADC_WriteReg(PGA_VAL_CH2_L,0x50); 
ADC_WriteReg(PGA_VAL_CH2_R,0x50);  

代码写得挺规范, 看不到问题, 能否先读写验证一下

IIC已经验证过，通信OK