Sunsea AIoT SIMCom SIM7075G User Manual page 35

SIM7075G User Manual V1.00
The following figure shows the external codec reference design.
Figure 22: Audio codec reference circuit
3.8 I2C Interface
SIM7075G provides an I2C interface with clock rate up to 400 kbps. Its operation voltage is 1.8V.
The following figure shows the I2C bus reference design.
Figure 23: I2C reference circuit
NOTE
The I2C signal has no pull-up resistors in module. So the pulling up resistors 1KΩ to VDD_EXT is
necessary in application circuit.
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