Smart Module Series
SC200K_Series_Hardware_Design 65 / 105
4.11. Sensor Interface
The module supports communication with sensors via I2C interface, and supports various sensors such
as accelerometer sensor, gyroscope sensor, compass, light sensor, temperature sensor, pressure sensor
etc.
Table 23: Pin Definition of Sensor Interface
4.12. Audio Interfaces
The module provides three analog input channels and three analog output channels. The following table
shows the pin definition of the audio interfaces.
Table 24: Pin Definition of Audio Interfaces
Pin Name
Pin No.
I/O
Description
Comment
SENSOR_I2C_SCL
91
OD
External sensor I2C clock
1.85 V power domain.
Integrates 1.8/20
kΩ
configurable pull-up resistors.
Only used for external
sensor.
SENSOR_I2C_SDA
92
OD
External sensor I2C data
Pin Name
Pin No.
I/O
Description
Comment
MIC1_P
4
AI
Main microphone input (+)
MIC1_M
5
AI
Main microphone input (-)
MIC2_P
6
AI
Microphone input for headset (+)
EAR_P
8
AO
Earpiece output (+)
EAR_M
9
AO
Earpiece output (-)
SPK_P
10
AO
Loudspeaker output (+)
SPK_M
11
AO
Loudspeaker output (-)
HPH_R
136
AO
Headphone right channel output
HPH_GND
137
AO
Headphone reference ground
If unused, needs to be
grounded.
