Integration Manual
Table Of Contents
- Document information
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.5.1 Module supply input (VCC)
- 1.5.1.1 VCC supply requirements
- 1.5.1.2 VCC current consumption in LTE connected mode
- 1.5.1.3 VCC current consumption in 2G connected mode
- 1.5.1.4 VCC current consumption in ultra low power deep sleep mode
- 1.5.1.5 VCC current consumption in low power idle mode
- 1.5.1.6 VCC current consumption in active mode (PSM / low power disabled)
- 1.5.2 Generic digital interfaces supply output (V_INT)
- 1.5.1 Module supply input (VCC)
- 1.6 System function interfaces
- 1.7 Antenna interfaces
- 1.8 SIM interface
- 1.9 Data communication interfaces
- 1.10 Audio
- 1.11 General Purpose Input/Output
- 1.12 GNSS peripheral input output
- 1.13 Reserved pins (RSVD)
- 2 Design-in
- 2.1 Overview
- 2.2 Supply interfaces
- 2.2.1 Module supply (VCC)
- 2.2.1.1 General guidelines for VCC supply circuit selection and design
- 2.2.1.2 Guidelines for VCC supply circuit design using a switching regulator
- 2.2.1.3 Guidelines for VCC supply circuit design using LDO linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary battery
- 2.2.1.6 Guidelines for external battery charging circuit
- 2.2.1.7 Guidelines for external charging and power path management circuit
- 2.2.1.8 Guidelines for particular VCC supply circuit design for SARA-R4x2
- 2.2.1.9 Guidelines for removing VCC supply
- 2.2.1.10 Additional guidelines for VCC supply circuit design
- 2.2.1.11 Guidelines for VCC supply layout design
- 2.2.1.12 Guidelines for grounding layout design
- 2.2.2 Generic digital interfaces supply output (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interfaces
- 2.5 SIM interface
- 2.6 Data communication interfaces
- 2.7 Audio
- 2.8 General Purpose Input/Output
- 2.9 GNSS peripheral input output
- 2.10 Reserved pins (RSVD)
- 2.11 Module placement
- 2.12 Module footprint and paste mask
- 2.13 Thermal guidelines
- 2.14 Schematic for SARA-R4 series module integration
- 2.15 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 4.1 Product certification approval overview
- 4.2 US Federal Communications Commission notice
- 4.3 Innovation, Science, Economic Development Canada notice
- 4.4 European Conformance CE mark
- 4.5 National Communication Commission Taiwan
- 4.6 ANATEL Brazil
- 4.7 Australian Conformance
- 4.8 GITEKI Japan
- 4.9 KC South Korea
- 5 Product testing
- Appendix
- A Migration between SARA modules
- B Glossary
- Related documentation
- Revision history
- Contact
SARA-R4 series - System integration manual
UBX-16029218 - R20 System description Page 39 of 129
C1-Public
The SARA-R4 series module itself acts as a USB device and can be connected to a USB host such as
a Personal Computer or an embedded application microprocessor equipped with compatible drivers.
The USB_D+/USB_D- lines carry USB serial bus data and signaling according to the Universal Serial
Bus revision 2.0 specification [5], while the VUSB_DET input pin senses the VBUS USB supply
presence (nominally 5 V at the source) to detect the host connection and enable the interface. Neither
the USB interface, nor the whole module is supplied by the VUSB_DET input, which senses the USB
supply voltage and absorbs few microamperes.
The USB interface of SARA-R410M and SARA-R412M modules is controlled and operated with:
• AT commands according to 3GPP TS 27.007 [7], 3GPP TS 27.005 [8]
• u-blox AT commands (see the SARA-R4 series AT commands manual [2])
SARA-R410M and SARA-R412M modules provide two USB functions:
• AT commands and data communication
• Diagnostic log
SARA-R422, SARA-R422S and SARA-R422M8S modules provide the following USB function:
• Diagnostic log
The USB profile of SARA-R4 series modules identifies itself by dedicated VID (Vendor ID) and PID
(Product ID) combination, included in the USB device descriptor following USB 2.0 specifications [5]:
• VID = 0x05C6
• PID = 0x90B2
1.9.3 SPI interface
☞ The SPI interface is not supported by current product versions: the SPI interface pins should not
be driven by any external device.
SARA-R410M and SARA-R412M modules include a Serial Peripheral Interface (I2S_WA / SPI_MOSI,
I2S_RXD / SPI_MISO, I2S_CLK / SPI_CLK, and I2S_TXD / SPI_CS) designed to communicate with
compatible external SPI devices.
1.9.4 SDIO interface
☞ The SDIO interface is not supported by current product versions: the SDIO interface pins should
not be driven by any external device.
The SARA-R410M and SARA-R412M modules include a 4-bit Secure Digital Input Output interface
(SDIO_D0, SDIO_D1, SDIO_D2, SDIO_D3, SDIO_CLK, and SDIO_CMD) designed to communicate with
compatible external SDIO devices.
1.9.5 DDC (I2C) interface
☞ The I2C interface is not supported by SARA-R410M-01B product version: the I2C interface pins
should not be driven by any external device.
SARA-R4 series modules include an I2C-bus compatible DDC interface (SDA, SCL lines) available to
communicate with an external u-blox GNSS receiver
30
and with external I2C devices as an audio codec:
30
Dedicated AT commands for external u-blox GNSS receiver communication and control are not supported by SARA-R410M-01B,
SARA-R422, and SARA-R422M8S product versions