At present, it can be seen that the two pa registers written in the left and right channels can be played, but the actual sound played out is only the sound of I2S.
The sound source here is a song on the left channel and a song on the right channel. When the sound source is placed on the computer, two songs are played at the same time. The PA register is set to 0x4c to play the left channel and 0x4d to play the right channel. But only one song played.Why does this problem occur？
The following is the dump of the register.
LEFT_AMP : 00_Device_Page <#00>= 0x00
LEFT_AMP : 01_SW_Reset <#01>= 0x00
LEFT_AMP : 02_Power_Control <#02>= 0x02
LEFT_AMP : 03_Playback_Config <#03>= 0x02
LEFT_AMP : 04_MISC_Config_1 <#04>= 0xC6
LEFT_AMP : 05_MISC_Config_2 <#06>= 0x09
LEFT_AMP : 06_TDM_Config_1 <#06>= 0x09
LEFT_AMP : 07_TDM2 <#07>= 0x02
LEFT_AMP : 08_TDM3 <#08>= 0x52
LEFT_AMP : 09_TDM4 <#09>= 0x10
LEFT_AMP : 0a_TDM5 <#10>= 0x13
LEFT_AMP : 0b_TDM6 <#11>= 0x02
LEFT_AMP : 0c_TDM7 <#12>= 0x40
LEFT_AMP : 0d_TDM8 <#13>= 0x04
LEFT_AMP : 0e_TDM9 <#14>= 0x05
LEFT_AMP : 0f_TDM10 <#15>= 0x06
LEFT_AMP : 10_TDM_Colok_Detection_Monitor <#16>= 0x07
LEFT_AMP : 3e_NoiseGate_Control <#62>= 0x10
LEFT_AMP : 5c__page2_NoiseGate_CH_Threshold_1 <#348>= 0x00
LEFT_AMP : 5d_page2_NoiseGate_CH_Threshold_2 <#349>= 0x00
LEFT_AMP : 5e_page2_NoiseGate_CH_Threshold_3 <#350>= 0x2F
LEFT_AMP : 5f_page2_NoiseGate_CH_Threshold_4 <#351>= 0x2C
LEFT_AMP : 64_page2_NoiseGate_Timer_1 <#356>= 0x00
LEFT_AMP : 65_page2_NoiseGate_Timer_2 <#357>= 0x00
LEFT_AMP : 66_page2_NoiseGate_Timer_3 <#358>= 0x70
LEFT_AMP : 67_page2_NoiseGate_Timer_4 <#359>= 0x80
LEFT_AMP : 0c_page2_DVC_PCM_1 <#268>= 0x40
LEFT_AMP : 0d_page2_DVC_PCM_2 <#269>= 0x00
LEFT_AMP : 0e_page2_DVC_PCM_3 <#270>= 0x00
LEFT_AMP : 0f_page2_DVC_PCM_4 <#271>= 0x00
Right_AMP : 00_Device_Page <#00>= 0x00
Right_AMP : 01_SW_Reset <#01>= 0x00
Right_AMP : 02_Power_Control <#02>= 0x02
Right_AMP : 03_Playback_Config <#03>= 0x02
Right_AMP : 04_MISC_Config_1 <#04>= 0xC6
Right_AMP : 05_MISC_Config_2 <#06>= 0x09
Right_AMP : 06_TDM_Config_1 <#06>= 0x09
Right_AMP : 07_TDM2 <#07>= 0x02
Right_AMP : 08_TDM3 <#08>= 0x62
Right_AMP : 09_TDM4 <#09>= 0x01
Right_AMP : 0a_TDM5 <#10>= 0x13
Right_AMP : 0b_TDM6 <#11>= 0x02
Right_AMP : 0c_TDM7 <#12>= 0x44
Right_AMP : 0d_TDM8 <#13>= 0x04
Right_AMP : 0e_TDM9 <#14>= 0x05
Right_AMP : 0f_TDM10 <#15>= 0x06
Right_AMP : 10_TDM_Colok_Detection_Monitor <#16>= 0x07
Right_AMP : 3e_No
The software is as follows
The schematic diagram is as follows:
This is WS and data of I2S waveform. From the waveform, both left and right channels have data. The data PA of the left channel can be played normally, and the waveform has burrs. It may be that there is something unclean on the hardware. From the waveform, the left and right channels are similar.
