Hi,
I have connected the ICS43434 breakout board to the 40-pin header.
While trying to capture the audio, the I2S2_SCLK is 2.1V 48.8MHz wave.
I am getting the I2S2_FS with a 3.3V square wave with a 12KHz wave.
jetson-nano:~/projects/audio_classification$ amixer -c 1 cset name=‘I2S2 Sample Rate’ 48000
amixer -c 1 cset name=‘I2S2 BCLK Ratio’ 64
amixer -c 1 cset name=‘I2S2 Capture Audio Bit Format’ 2
amixer -c 1 cset name=‘I2S2 Client Bit Format’ 2
amixer -c 1 cset name=‘I2S2 Capture Audio Channels’ 2
amixer -c 1 cset name=‘I2S2 Client Channels’ 2
amixer -c 1 cset name=‘I2S2 codec frame mode’ ‘i2s’
amixer -c 1 cset name=‘I2S2 codec master mode’ ‘cbs-cfs’
amixer -c 1 cset name=‘I2S2 Mux’ ‘ADMAIF1’
amixer -c 1 cset name=‘ADMAIF1 Mux’ ‘I2S2’
amixer -c 1 cset name=‘ADMAIF1 Capture Audio Channels’ 2
amixer -c 1 cset name=‘ADMAIF1 Capture Client Channels’ 2
arecord -D hw:1,0 -f S32_LE -r 48000 -c 2 -d 5 test.wav
sox test.wav -n stat 2>&1 | grep -i “RMS|Maximum”
numid=162,iface=MIXER,name=‘I2S2 Sample Rate’
; type=INTEGER,access=rw------,values=1,min=0,max=192000,step=0
: values=48000
numid=176,iface=MIXER,name=‘I2S2 BCLK Ratio’
; type=INTEGER,access=rw------,values=1,min=0,max=2147483647,step=0
: values=64
numid=164,iface=MIXER,name=‘I2S2 Capture Audio Bit Format’
; type=ENUMERATED,access=rw------,values=1,items=3
; Item #0 ‘None’
; Item #1 ‘16’
; Item #2 ‘32’
: values=2
numid=165,iface=MIXER,name=‘I2S2 Client Bit Format’
; type=ENUMERATED,access=rw------,values=1,items=3
; Item #0 ‘None’
; Item #1 ‘16’
; Item #2 ‘32’
: values=2
numid=167,iface=MIXER,name=‘I2S2 Capture Audio Channels’
; type=INTEGER,access=rw------,values=1,min=0,max=16,step=0
: values=2
numid=168,iface=MIXER,name=‘I2S2 Client Channels’
; type=INTEGER,access=rw------,values=1,min=0,max=16,step=0
: values=2
numid=1223,iface=MIXER,name=‘I2S2 codec frame mode’
; type=ENUMERATED,access=rw------,values=1,items=6
; Item #0 ‘None’
; Item #1 ‘i2s’
; Item #2 ‘right-j’
; Item #3 ‘left-j’
; Item #4 ‘dsp-a’
; Item #5 ‘dsp-b’
: values=1
numid=1224,iface=MIXER,name=‘I2S2 codec master mode’
; type=ENUMERATED,access=rw------,values=1,items=3
; Item #0 ‘None’
; Item #1 ‘cbm-cfm’
; Item #2 ‘cbs-cfs’
: values=2
numid=1105,iface=MIXER,name=‘I2S2 Mux’
; type=ENUMERATED,access=rw------,values=1,items=81
; Item #0 ‘None’
; Item #1 ‘ADMAIF1’
; Item #2 ‘ADMAIF2’
; Item #3 ‘ADMAIF3’
; Item #4 ‘ADMAIF4’
; Item #5 ‘ADMAIF5’
; Item #6 ‘ADMAIF6’
; Item #7 ‘ADMAIF7’
; Item #8 ‘ADMAIF8’
; Item #9 ‘ADMAIF9’
; Item #10 ‘ADMAIF10’
; Item #11 ‘ADMAIF11’
; Item #12 ‘ADMAIF12’
; Item #13 ‘ADMAIF13’
; Item #14 ‘ADMAIF14’
; Item #15 ‘ADMAIF15’
; Item #16 ‘ADMAIF16’
; Item #17 ‘I2S1’
; Item #18 ‘I2S2’
; Item #19 ‘I2S3’
; Item #20 ‘I2S4’
; Item #21 ‘I2S5’
; Item #22 ‘I2S6’
; Item #23 ‘SFC1’
; Item #24 ‘SFC2’
; Item #25 ‘SFC3’
; Item #26 ‘SFC4’
; Item #27 ‘MIXER1 TX1’
; Item #28 ‘MIXER1 TX2’
; Item #29 ‘MIXER1 TX3’
; Item #30 ‘MIXER1 TX4’
; Item #31 ‘MIXER1 TX5’
; Item #32 ‘AMX1’
; Item #33 ‘AMX2’
; Item #34 ‘AMX3’
; Item #35 ‘AMX4’
; Item #36 ‘ARAD1’
; Item #37 ‘AFC1’
; Item #38 ‘AFC2’
; Item #39 ‘AFC3’
; Item #40 ‘AFC4’
; Item #41 ‘AFC5’
; Item #42 ‘AFC6’
; Item #43 ‘OPE1’
; Item #44 ‘SPKPROT1’
; Item #45 ‘MVC1’
; Item #46 ‘MVC2’
; Item #47 ‘IQC1-1’
; Item #48 ‘IQC1-2’
; Item #49 ‘IQC2-1’
; Item #50 ‘IQC2-2’
; Item #51 ‘DMIC1’
; Item #52 ‘DMIC2’
; Item #53 ‘DMIC3’
; Item #54 ‘DMIC4’
; Item #55 ‘ADX1 TX1’
; Item #56 ‘ADX1 TX2’
; Item #57 ‘ADX1 TX3’
; Item #58 ‘ADX1 TX4’
; Item #59 ‘ADX2 TX1’
; Item #60 ‘ADX2 TX2’
; Item #61 ‘ADX2 TX3’
; Item #62 ‘ADX2 TX4’
; Item #63 ‘ADX3 TX1’
; Item #64 ‘ADX3 TX2’
; Item #65 ‘ADX3 TX3’
; Item #66 ‘ADX3 TX4’
; Item #67 ‘ADX4 TX1’
; Item #68 ‘ADX4 TX2’
; Item #69 ‘ADX4 TX3’
; Item #70 ‘ADX4 TX4’
; Item #71 ‘ADMAIF17’
; Item #72 ‘ADMAIF18’
; Item #73 ‘ADMAIF19’
; Item #74 ‘ADMAIF20’
; Item #75 ‘ASRC1 TX1’
; Item #76 ‘ASRC1 TX2’
; Item #77 ‘ASRC1 TX3’
; Item #78 ‘ASRC1 TX4’
; Item #79 ‘ASRC1 TX5’
; Item #80 ‘ASRC1 TX6’
: values=1
numid=1094,iface=MIXER,name=‘ADMAIF1 Mux’
; type=ENUMERATED,access=rw------,values=1,items=81
; Item #0 ‘None’
; Item #1 ‘ADMAIF1’
; Item #2 ‘ADMAIF2’
; Item #3 ‘ADMAIF3’
; Item #4 ‘ADMAIF4’
; Item #5 ‘ADMAIF5’
; Item #6 ‘ADMAIF6’
; Item #7 ‘ADMAIF7’
; Item #8 ‘ADMAIF8’
; Item #9 ‘ADMAIF9’
; Item #10 ‘ADMAIF10’
; Item #11 ‘ADMAIF11’
; Item #12 ‘ADMAIF12’
; Item #13 ‘ADMAIF13’
; Item #14 ‘ADMAIF14’
; Item #15 ‘ADMAIF15’
; Item #16 ‘ADMAIF16’
; Item #17 ‘I2S1’
; Item #18 ‘I2S2’
; Item #19 ‘I2S3’
; Item #20 ‘I2S4’
; Item #21 ‘I2S5’
; Item #22 ‘I2S6’
; Item #23 ‘SFC1’
; Item #24 ‘SFC2’
; Item #25 ‘SFC3’
; Item #26 ‘SFC4’
; Item #27 ‘MIXER1 TX1’
; Item #28 ‘MIXER1 TX2’
; Item #29 ‘MIXER1 TX3’
; Item #30 ‘MIXER1 TX4’
; Item #31 ‘MIXER1 TX5’
; Item #32 ‘AMX1’
; Item #33 ‘AMX2’
; Item #34 ‘AMX3’
; Item #35 ‘AMX4’
; Item #36 ‘ARAD1’
; Item #37 ‘AFC1’
; Item #38 ‘AFC2’
; Item #39 ‘AFC3’
; Item #40 ‘AFC4’
; Item #41 ‘AFC5’
; Item #42 ‘AFC6’
; Item #43 ‘OPE1’
; Item #44 ‘SPKPROT1’
; Item #45 ‘MVC1’
; Item #46 ‘MVC2’
; Item #47 ‘IQC1-1’
; Item #48 ‘IQC1-2’
; Item #49 ‘IQC2-1’
; Item #50 ‘IQC2-2’
; Item #51 ‘DMIC1’
; Item #52 ‘DMIC2’
; Item #53 ‘DMIC3’
; Item #54 ‘DMIC4’
; Item #55 ‘ADX1 TX1’
; Item #56 ‘ADX1 TX2’
; Item #57 ‘ADX1 TX3’
; Item #58 ‘ADX1 TX4’
; Item #59 ‘ADX2 TX1’
; Item #60 ‘ADX2 TX2’
; Item #61 ‘ADX2 TX3’
; Item #62 ‘ADX2 TX4’
; Item #63 ‘ADX3 TX1’
; Item #64 ‘ADX3 TX2’
; Item #65 ‘ADX3 TX3’
; Item #66 ‘ADX3 TX4’
; Item #67 ‘ADX4 TX1’
; Item #68 ‘ADX4 TX2’
; Item #69 ‘ADX4 TX3’
; Item #70 ‘ADX4 TX4’
; Item #71 ‘ADMAIF17’
; Item #72 ‘ADMAIF18’
; Item #73 ‘ADMAIF19’
; Item #74 ‘ADMAIF20’
; Item #75 ‘ASRC1 TX1’
; Item #76 ‘ASRC1 TX2’
; Item #77 ‘ASRC1 TX3’
; Item #78 ‘ASRC1 TX4’
; Item #79 ‘ASRC1 TX5’
; Item #80 ‘ASRC1 TX6’
: values=18
numid=2,iface=MIXER,name=‘ADMAIF1 Capture Audio Channels’
; type=INTEGER,access=rw------,values=1,min=0,max=16,step=0
: values=2
numid=4,iface=MIXER,name=‘ADMAIF1 Capture Client Channels’
; type=INTEGER,access=rw------,values=1,min=0,max=16,step=0
: values=2
Recording WAVE ‘test.wav’ : Signed 32 bit Little Endian, Rate 48000 Hz, Stereo
Maximum amplitude: 1.000000
RMS amplitude: 0.537631
Maximum delta: 1.384766
RMS delta: 0.760327
The sound file ‘test.wav’ is just noise only.
What may be the reason?