Users Manual
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GPIO64_TP_RST_N 80 O Reset
VREG_L17_2P85 112 O 2.8V Power
Note: The interface definition of the capacitive touch can be adjusted by software, and the user can
change the GPIO and I2C according to the design needs.
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The module provides three analog audio inputs, MIC_IN1_P/M for the main microphone, MIC_IN2_P
for the microphone, and MIC_IN3_P for the noise reduction microphone. The module also provides
three analog audio outputs (HPH_L/R, REC_P/N, SPK_P/N). The audio pin is defined as follows:
Table 4.8: Audio Pin Foot Definitions
Name Pin Input/Output
Description
MIC_IN1_P 35 I Main MIC positive
MIC_IN2_P 36 I Headphone MIC positive
GND_MIC 34 I Headphone MIC, noise reduction MIC negative
MIC_IN3_P 37 I Noise reduction MIC positive
CDC_HPH_R 38 O Headphone right channel
CDC_HPH_L 40 O Headphone left channel
CDC_HS_DET 45 I Headphone plug detection
CDC_HPH_REF 39 I Headphone reference ground
CDC_EAR_M 42 O Earpiece output negative
CDC_EAR_P 41 O Earpiece output positive
SPKR_DRV_M 44 O Amplifier (0.85W) output negative
SPKR_DRV_P 43 O Amplifier (0.85W) output positive
Users are advised to use the following circuit according to the actual application to get better sound
effects.
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