Advantech ROM-DB7502 User Manual page 45

2.4.2.14 Codec Connector (I2S_CN1)
Pin Pin Name
1 AUDIO_VDDA
2 GND
3 AUDIO_VDDA
4 I2S0_SDIN
5 I2S0_SDOUT
6 I2S0_LRCK
7 I2S0_CK
8 AUDIO_MCK
9 NC
10 GND
11 AUDIO_I2C_CK
12 MIC_BIAS
13 AUDIO_I2C_DAT
14 GND_AUD
16 HP_R
17 MIC_IN
18 GND_AUD
19 GND_AUD
20 HP_L
DESCRIPTION
Power
GND
Power
I2S Serial Data Input from Codec
I2S Serial Data Output to Codec
I2S Serial Data Clock from/to Codec.
I2S Master Clock to Codec.
Master clock input
GND
I2C SCL
Microphone bias voltage output
I2C SDA
Frame GND
High-power output driver (right +)
MIC3 input
Frame GND
Frame GND
High-power output driver (left +)
37 ROM-DB7502 User Manual