AOM-DB3500 AUDIO MIC2/OUT2 - Revision history

Xingxing.li at 05:58, 25 November 2025

2025-11-25T05:58:21Z

Xingxing.li at 05:57, 25 November 2025

2025-11-25T05:57:40Z

Xingxing.li: /* Playback Take Card ID 1 for example: */

2025-11-25T05:51:12Z

‎Playback Take Card ID 1 for example:

Xingxing.li at 06:29, 19 November 2025

2025-11-19T06:29:35Z

Xingxing.li: Created page with " === '''AOM-3821 supports three kinds of sound cards: ''' === “1 rt5640-codec”(9696EG57001)
“2 hdmi”,
“3 dp0”. === '''AUDIO MIC2/OUT2..."

2025-11-19T06:18:53Z

Created page with " === '''AOM-3821 supports three kinds of sound cards: ''' === “1 rt5640-codec”(9696EG57001) “2 hdmi”, “3 dp0”. === '''AUDIO MIC2/OUT2..."

New page

=== '''AOM-3821 supports three kinds of sound cards: ''' ===

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

=== '''AUDIO MIC2/OUT2（Compatible with ROM-EG57）''' ===

'''HW Pin Header'''

{| border="1" cellpadding="1" cellspacing="1"
|-
| colspan="4" | '''I2S1 Connector Pin Definition'''
|-
| style="width: 26px;" | '''Pin'''
| style="width: 95px;" | '''Signal'''
| '''I/O'''
| '''Description'''
|-
| style="width: 26px;" | 1
| style="width: 95px;" | I2S1_VDDA
|  
| I2S1 3.3V source
|-
| style="width: 26px;" | 2
| style="width: 95px;" | GND
|  
| Ground
|-
| style="width: 26px;" | 3
| style="width: 95px;" | I2S1_VDDA
|  
| I2S1 3.3V source
|-
| style="width: 26px;" | 4
| style="width: 95px;" | I2S1_SDIN_3.3
| I
| I2S1 Serial Data IN 3.3V Level
|-
| style="width: 26px;" | 5
| style="width: 95px;" | I2S1_SDOUT_3.3
| O
| I2S1 Serial Data OUT 3.3V Level
|-
| style="width: 26px;" | 6
| style="width: 95px;" | I2S1_LRCK_3.3
| I
| I2S1 Left/Right Clock
|-
| style="width: 26px;" | 7
| style="width: 95px;" | I2S1_BCLK_3.3
| I
| I2S1 Bit Clock
|-
| style="width: 26px;" | 8
| style="width: 95px;" | AUD1_MCK
| I
| Audio1 Master Clock
|-
| style="width: 26px;" | 9
| style="width: 95px;" | N/A
|  
| Not Applicable
|-
| style="width: 26px;" | 10
| style="width: 95px;" | GND
|  
| Ground
|-
| style="width: 26px;" | 11
| style="width: 95px;" | I2S1_I2C_CLK
| I
| I2S1 I2C clock input from host.
|-
| style="width: 26px;" | 12
| style="width: 95px;" | MIC_BIAS2
| I
| For I2S1 Microphone Bias Voltage
|-
| style="width: 26px;" | 13
| style="width: 95px;" | I2S1_I2C_DAT
| I/O
| I2S1 I2C Data
|-
| style="width: 26px;" | 14
| style="width: 95px;" | GND
|  
| Ground
|-
| style="width: 26px;" | 15
| style="width: 95px;" | N/A
|  
| Not Applicable
|-
| style="width: 26px;" | 16
| style="width: 95px;" | I2S1_HP_R
| I
| I2S1 Right Headphone
|-
| style="width: 26px;" | 17
| style="width: 95px;" | I2S1_MIC_IN
| I
| I2S1 Microphone IN
|-
| style="width: 26px;" | 18
| style="width: 95px;" | GND
|  
| Ground
|-
| style="width: 26px;" | 19
| style="width: 95px;" | GND
|  
| Ground
|-
| style="width: 26px;" | 20
| style="width: 95px;" | I2S1_HP_L
| I
| I2S1 Left Headphone
|}

[[File:AOM-DB3500 AUDIO2 1.png]]

=== '''Get sound card ID''' ===
<pre># cat /proc/asound/cards
0 [rockchiphdmiin ]: rockchip_hdmiin - rockchip,hdmiin
 rockchip,hdmiin
 1 [rockchiprt5640c]: simple-card - rockchip,rt5640-codec
 rockchip,rt5640-codec
 2 [rockchiphdmi0 ]: rockchip-hdmi0 - rockchip-hdmi0
 rockchip-hdmi0
 3 [rockchipdp0 ]: rockchip-dp0 - rockchip-dp0
 rockchip-dp0
</pre>

=== '''Record''' Take Card ID 1 for example: ===
<pre># arecord -Dplughw:1,0 -f S16_LE -r 16000 -d 10 -t wav test.wav
</pre>

=== '''Playback''' Take Card ID 1 for example: ===
<pre># aplay -Dplughw:1,0 -t wav test.wav</pre>

@@ Line 3: / Line 3: @@
 “1 rt5640-codec”(9696EG57001)<br/> “2 hdmi”,&nbsp;<br/> “3 dp0”.
 === '''AUDIO MIC2/OUT2（Compatible with ROM-EG57）''' ===
@@ Line 9: / Line 8: @@
 '''HW Pin Header'''
-'''[[File:AOM-DB3500 AUDIO2.png]]&nbsp;'''[[File:AOM-DB3500 AUDIO PIn header.png|RTENOTITLE]]
+'''[[File:AOM-DB3500 AUDIO2.png|RTENOTITLE]]&nbsp;'''[[File:AOM-DB3500 AUDIO PIn header.png|RTENOTITLE]]
 {| border="1" cellpadding="1" cellspacing="1"
@@ Line 138: / Line 137: @@
 <pre># arecord -Dplughw:1,0 -f S16_LE -r 16000 -d 10 -t wav test.wav
 </pre>
 === '''Playback'''<br/> Take Card ID 1 for example: ===
 <pre># aplay -Dplughw:1,0 -t wav test.wav</pre>
-[[File:AOM-DB3500 AUDIO Function.png]]
+[[File:AOM-DB3500 AUDIO Function.png|RTENOTITLE]]