User's Manual
Table Of Contents
- Introduction
- Modules RF band support
- Features
- Module Connection Interface
- Environmental Specifications and Certifications
- Environmental Specifications
- Certifications
- Green Product Compliance
- Pin Definitions
- LGA Module Pin Diagram
- LGA Module Pin Definitions
- Electrical Specifications
- Power supply
- Power consumption
- I/O Interface
- USB interface
- UIM interface
- Control interface
- Power-on/ WAKEUP_IN Signal
- WAKEUP_OUT interface
- Reset Signal
- SPI Master Interface
- PCM Interface
- I2S Interface
- I2C Interface
- UART Interface
- ADC Interface
- RF Specifications
- Band support
- Bandwidth support
- RF Transmit Specification
- RF Receiver Specification
- GNSS Receiver Specification
- Software Interface
- Support tools
- USB interface
- Mechanical
- PCBA Form Factor
- Design Guide
- Power supply
- Thermal design
- USB design
- RF connection
- Interference and sensitivity
- GNSS external circuit design
- Reflow
- PCB pad design
- Stencil
- Antenna design requirement
- Labeling and Packaging
- Labeling
- Packing
- MSL level
- Safety Recommendation
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Product Technical Specifications
□ Normal □ Internal Use Confidential □ Restricted Confidential
3.4. USB interface
The IMQ3 series modules comply with USB 2.0 high-speed protocol. The USB input/output
lines follow USB 2.0 specifications.
Table 7. Signals of the USB interface
Name
Description
Input/Output (Direction
to module)
Voltage Level (V)
Min.
Typ.
Max.
D+
USB data positive
(low-/full-speed)
Input High
2
3.3
3.6
Input Low
0
0.8
Output High
2.8
3.3
3.6
Output Low
0.3
USB data positive
(high-speed)
Input High
0.3
0.44
Input Low
0
0.01
Output High
0.36
0.38
0.44
Output Low
0
0.01
D–
USB data negative
(low-/full-speed)
Input High
2
3.3
3.6
Input Low
0
0.8
Output High
2.8
3.3
3.6
Output Low
0.3
USB data negative
(high-speed)
Input High
0.3
0.44
Input Low
0
0.01
Output High
0.36
0.38
0.44
Output Low
0
0.01