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AOM-DB3500 AUDIO MIC2/OUT2

Contents​

  • 1AOM-3821 supports three kinds of sound cards:
  • 2AUDIO MIC2/OUT2（Compatible with ROM-EG57）
  • 3Get sound card ID
  • 4RecordTake Card ID 1 for example:
  • 5PlaybackTake Card ID 1 for example:

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

I2S1 Connector Pin Definition
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Get sound card ID​

# 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

Record Take Card ID 1 for example:​

# arecord -Dplughw:1,0 -f S16_LE -r 16000 -d 10 -t wav test.wav

Playback Take Card ID 1 for example:​

# aplay -Dplughw:1,0 -t wav test.wav