Xingxing.li at 01:19, 18 March 2026

2026-03-18T01:19:28Z

Xingxing.li at 08:49, 17 March 2026

2026-03-17T08:49:19Z

Xingxing.li: Created page with " === '''AOM-3841 supports three kinds of sound cards:''' === “1 rt5640-codec”(9696EG57001)
“2 hdmi”,
“3 dp0 '''Set the default audio output when playing..."

2026-03-17T07:53:04Z

Created page with " === '''AOM-3841 supports three kinds of sound cards:''' === “1 rt5640-codec”(9696EG57001) “2 hdmi”, “3 dp0 '''Set the default audio output when playing..."

New page

=== '''AOM-3841 supports three kinds of sound cards:''' ===

“1 rt5640-codec”(9696EG57001) “2 hdmi”, “3 dp0

'''Set the default audio output when playing media files.''' 1. Click “Applications” ->”Multimedia”->”PulseAudio Volume Control”. 2. Select “Build-in Audio stereo” for rt5640-codec output, or select “HDMI” for  HDMI output, or select “Build-in Audio Display Port 1 Stereo” for DP output.

[[File:AOM-3841 Audio.jpg|RTENOTITLE]]

'''Mute and Volume Control''' Mute and volume can be configured by GUI.

[[File:AOM-3841 Audio1.jpg|RTENOTITLE]]

 

=== '''AUDIO MIC1/OUT1（Compatible with ROM-EG57）''' ===

'''HW Pin Header'''

[[File:AOM-DB3500 AUDIO 1.png|700x600px|AOM-DB3500 AUDIO 1.png]][[File:AOM-DB3500 AUDIO PIn header.png|RTENOTITLE]]

{| border="1" cellpadding="1" cellspacing="1" style="width: 507px;"
|-
| colspan="4" style="width: 497px;" | '''I2S0 Connector Pin Definition'''
|-
| style="width: 55px;" | '''Pin'''
| style="width: 156px;" | '''Signal'''
| style="width: 54px;" | '''I/O'''
| style="width: 219px;" | '''Description'''
|-
| style="width: 55px;" | 1
| style="width: 156px;" | I2S0_VDDA
| style="width: 54px;" |  
| style="width: 219px;" | I2S0 3.3V source
|-
| style="width: 55px;" | 2
| style="width: 156px;" | GND
| style="width: 54px;" |  
| style="width: 219px;" | Ground
|-
| style="width: 55px;" | 3
| style="width: 156px;" | I2S0_VDDA
| style="width: 54px;" |  
| style="width: 219px;" | I2S0 3.3V source
|-
| style="width: 55px;" | 4
| style="width: 156px;" | I2S0_SDIN_3.3
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 Serial Data IN 3.3V Level
|-
| style="width: 55px;" | 5
| style="width: 156px;" | I2S0_SDOUT_3.3
| style="width: 54px;" | O
| style="width: 219px;" | I2S0 Serial Data OUT 3.3V Level
|-
| style="width: 55px;" | 6
| style="width: 156px;" | I2S0_LRCK_3.3
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 Left/Right Clock
|-
| style="width: 55px;" | 7
| style="width: 156px;" | I2S0_BCLK_3.3
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 Bit Clock
|-
| style="width: 55px;" | 8
| style="width: 156px;" | AUD0_MCK
| style="width: 54px;" | I
| style="width: 219px;" | Audio0 Master Clock
|-
| style="width: 55px;" | 9
| style="width: 156px;" | N/A
| style="width: 54px;" |  
| style="width: 219px;" | Not Applicable
|-
| style="width: 55px;" | 10
| style="width: 156px;" | GND
| style="width: 54px;" |  
| style="width: 219px;" | Ground
|-
| style="width: 55px;" | 11
| style="width: 156px;" | I2S0_I2C_CLK
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 I2C clock input from host.
|-
| style="width: 55px;" | 12
| style="width: 156px;" | MIC_BIAS1
| style="width: 54px;" | I
| style="width: 219px;" | For I2S0 Microphone Bias Voltage
|-
| style="width: 55px;" | 13
| style="width: 156px;" | I2S0_I2C_DAT
| style="width: 54px;" | I/O
| style="width: 219px;" | I2S0 I2C Data
|-
| style="width: 55px;" | 14
| style="width: 156px;" | GND
| style="width: 54px;" |  
| style="width: 219px;" | Ground
|-
| style="width: 55px;" | 15
| style="width: 156px;" | N/A
| style="width: 54px;" |  
| style="width: 219px;" | Not Applicable
|-
| style="width: 55px;" | 16
| style="width: 156px;" | I2S0_HP_R
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 Right Headphone
|-
| style="width: 55px;" | 17
| style="width: 156px;" | I2S0_MIC_IN
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 Microphone IN
|-
| style="width: 55px;" | 18
| style="width: 156px;" | GND
| style="width: 54px;" |  
| style="width: 219px;" | Ground
|-
| style="width: 55px;" | 19
| style="width: 156px;" | GND
| style="width: 54px;" |  
| style="width: 219px;" | Ground
|-
| style="width: 55px;" | 20
| style="width: 156px;" | I2S0_HP_L
| style="width: 54px;" | I
| style="width: 219px;" | I2S0 Left Headphone
|}

=== '''Audio Test''' ===

=== '''Get sound card ID''' ===
<pre># cat /proc/asound/cards
0 [rockchiprt5640c]: simple-card - rockchip,rt5640-codec
 rockchip,rt5640-codec
1 [rockchipdp0 ]: rockchip-dp0 - rockchip-dp0
 rockchip-dp0
2 [rockchiphdmi ]: rockchip-hdmi - rockchip-hdmi
 rockchip-hdmi</pre>

=== '''Record''' ===

Take Card ID 0 for example:
<pre># CARD_ID=0
# arecord -c 2 -Dplughw:$CARD_ID,0 -f S16_LE -r 16000 -d 10 -t wav 
test.wav  </pre>

 

=== '''Playback.''' ===

Take Card ID 0 for example:
<pre># CARD_ID=0
# arecord -c 2 -Dplughw:$CARD_ID,0 -f S16_LE -r 16000 -d 10 -t wav 
test.wav</pre>

See details of the usage of “aplay”: 
<pre># aplay --help
… …
-D, --device=NAME select PCM by name
-t, --file-type TYPE file type (voc, wav, raw or au)
… …</pre>

 

=== '''RKTool指令：''' ===
<pre># cat /proc/asound/cards
# /tools/test/adv/audio/audio_record_test.sh 0
# /tools/test/adv/audio/audio_play_test.sh 0</pre>

[[File:AOM-3841 Audio test.png|RTENOTITLE]] [[File:AOM-3841 Audio test1.png|RTENOTITLE]]

AOM-3841 AUDIO MIC1/OUT1 & MIC2/OUT2 - Revision history

Xingxing.li at 01:19, 18 March 2026

Xingxing.li at 08:49, 17 March 2026

Xingxing.li: Created page with " === '''AOM-3841 supports three kinds of sound cards:''' === “1 rt5640-codec”(9696EG57001) “2 hdmi”, “3 dp0 '''Set the default audio output when playing..."

Xingxing.li: Created page with " === '''AOM-3841 supports three kinds of sound cards:''' === “1 rt5640-codec”(9696EG57001)
“2 hdmi”,
“3 dp0 '''Set the default audio output when playing..."