User's Manual
Table Of Contents
- Contents
- Table Index
- Figure Index
- 1Introduction
- 1.1Product Outline
- 1.2Hardware Interface Overview
- 1.3Hardware Block Diagram
- 1.4Functional Overview
- 2Package Information
- 2.1.Pin Assignment Overview
- 2.2.Pin Description
- 2.3.Mechanical Information
- 2.4.Footprint Recommendation
- 3Interface Application
- 3.1Power Supply
- 3.3UART Interface
- 3.4USB Interface
- 3.5SIM Interface
- 3.6PCM Interface
- 3.7I2C Interface
- 3.8SPI Interface
- 3.9Network status
- 3.10ADC interface
- 3.11LDO output
- 3.12USB_BOOT Interface
- 3.13GPIO Interface
- 3.14 RF control Interface
- 3.15Force USB Download Interface
- 4RF Specifications
- 4.1LTE RF Specifications
- 4.2LTE Antenna Design Guide
- 4.3GNSS
- 4.4RF traces note
- 5 Electrical Specifications
- 5.1Absolute maximum ratings
- 5.2Operating conditions
- 5.3Operating Mode
- 5.4Current Consumption
- 5.5ESD Notes
- 6 SMT Production Guide
- 6.1Top and Bottom View of SIM7090G
- 6.2Label Information
- 6.3Typical SMT Reflow Profile
- 6.5Baking
- 6.6Stencil Foil Design Recommendation
- 7 Packaging
- 7.1Tray packaging
- 8 Appendix
- 8.1Coding Schemes and Maximum Net Data Rates over Air
- 8.2Related Documents
- 8.3Terms and Abbreviations
- 8.4Safety Caution
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Normally RI will keep high level until certain conditions such as receiving SMS, or a URC report coming,
then it will output a low level pulse 120ms, in the end, it will become high level.
Figure 13: RI behaviour（SMS and URC report）
3.3.3. DTR Behavior
Perform the following operations in turn, and the module will enter sleep mode.
Setting the AT command “AT+CSCLK=1”.
Drive DTR to high level.
In sleep mode, the UART is unavailable. And pulling down DTR can wake up module.
After setting the AT command “AT+CSCLK=0”, SIM7090G will do nothing when the DTR pin is pulling up.
For more details of AT commands about UART, please refer to document [1] and [20].
3.4 USB Interface
SIM7090G has a USB2.0 interface. The USB interface is used for AT command communication, data
transmission, software debugging and firmware upgrade. The following table shows the pin definition of
USB interface.
Table 14: Pin Definition of USB Interface
Pin Name
Pin No.
I/O
Description
Comment
USB_VBUS
12
PI
USB connection detection
The input range is
1.3V~1.8V
USB_DP
11
IO
USB differential data bus (+)
Require differential
NOTE