Ublox SARA-R5 Series System Integration Manual

SARA-R5 series - System integration manual
UBX-19041356 - R04 System description Page 29 of 118
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1.9 Data communication interfaces
SARA-R5 series modules provide the following serial communication interfaces:
• UART interfaces, available for communications with host application processor. See section 1.9.1.
• USB 2.0 compliant interface, available for diagnostic only. See section 1.9.2.
• SPI interfaces, available for communications with external SPI devices and for diagnostic. See
section 1.9.3.
• SDIO interface, available for communications with external SDIO devices. See section 1.9.4.
• DDC (I2C bus compatible) interface, available for communications with external I2C devices. See
section 1.9.5.
1.9.1 UART interfaces
1.9.1.1 UART features
SARA-R5 series modules include 1.8 V unbalanced asynchronous serial interfaces (UART) for
communications with external host application processor.
UART can be configured by dedicated AT command (see the SARA-R5 series AT commands
manual [2], +USIO AT command) in the following variants:
• Variant 0 (default configuration), consisting in a single UART interface on RXD, TXD, CTS, RTS,
DTR, RI pins, supporting:
o AT commands
o data communication
o multiplexer protocol functionality (see 1.9.1.4)
o FW update by means of FOAT
o FW update by means of the u-blox EasyFlash tool (see the firmware update application
note [21])
The following lines are provided:
o data lines (RXD as output, TXD as input)
o hardware flow control lines (CTS as output, RTS as input)
o modem status and control lines (DTR as input, RI as output)
• Variant 1, consisting in a single UART interface on RXD, TXD, CTS, RTS, DTR, DSR, DCD, RI pins,
supporting:
o AT commands
o data communication
o multiplexer protocol functionality (see 1.9.1.4)
o FW update by means of FOAT
o FW update by means of the u-blox EasyFlash tool (see the firmware update application
note [21])
The following lines are provided:
o data lines (RXD as output, TXD as input)
o hardware flow control lines (CTS as output, RTS as input)
o modem status and control lines (DTR as input, DSR as output, DCD as output, RI as output)

Ublox SARA-R5 Series Specifications

General

Brand	Ublox
Model	SARA-R5 Series
Category	Control Unit
Language	English