Shanghai SIMCom Wireless Solutions Limited 201802 User Manual
Smart Machine Smart Decision
SIM7600V-H_User Manual_V1.00
2018-02-24
33
Figure 23: Audio codec reference circuit
Note: Module can transmit PCM data by theUSB portbesidesthe PCM interface. For more
details please refer to documents [1] and [23].
details please refer to documents [1] and [23].
3.7 I2C Interface
Module provides a I2C interface compatible with I2C specification, version 2.1, with clock rate up
to 400 kbps. Its operation voltage is 1.8V.
to 400 kbps. Its operation voltage is 1.8V.
3.7.1
I2C Design Guide
The following figure shows the I2C bus reference design.
Figure 24: I2C reference circuit
Note
：
SDA and SCLhave pull-up resistors in module. So, 2 external pull up resistors are not needed in
application circuit.
“AT+CRIIC and AT+CWIIC” AT commands could be used to read/write register values of the
I2C peripheral devices.For more details about AT commands please refer to document [1].
application circuit.
“AT+CRIIC and AT+CWIIC” AT commands could be used to read/write register values of the
I2C peripheral devices.For more details about AT commands please refer to document [1].