Boardcon EM3288, Hardware Manual, Page: 17 / 28

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16
15 HDMI_SCL HDMI serial clock 16 HDMI_SDA HDMI serial data
17 GND Ground 18 HDMI_VCC 5V
19 HDMI_HPD Hot Plug Detect 20 GND Ground
21 GND Ground 22 GND Ground
23 GND Ground
2.7 Audio I/O (J6, J7, MIC1)
The EM3288 adopts audio codec ES8323, provides stereo audio output (Green, 3.5mm audio jack) and
line in (Pink, 3.5mm audio jack).
Features

Low power

Integrated ADC and DAC

IIS transfer audio data

Stereo output, support recording
Line in (J6)
Pin Signal Description Pin Signal Description
1 GND Ground 2 RIN2 Right Channel input
3 RIN2 Right Channel input 4 LIN2 Left Channel input
5 LIN2 Left Channel input
Headphone (J7)
Pin Signal Description Pin Signal Description
1 GND Ground 2 HP_RO
Right Channel
Headphone Output
3 AROUT
Right Channel
Headphone Output
4 ALOUT
Left Channel
Headphone Output
5 HP_LO
Left Channel
Headphone Output
The MIC1 model is WM_64BC MIC/F6/DIP. It is used for recording.