SARA-R412M datasheet(15/43 Pages) U-BLOX

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SARA-R4 series - Data sheet

UBX-16024152 - R18

Interfaces

Page 15 of 43

2.6 Audio

☞ Audio is not supported by the “00”, “01”, “02”, “52”, “63” and “73” product versions.

SARA-R4 series modules support VoLTE (Voice over LTE Cat M1 radio bearer) for providing audio

services.

SARA-R4 series modules include an I2S digital audio interface to transfer digital audio data to/from

an external compatible audio device.

The digital audio interface can be made available as an alternative function, in a mutually exclusive

way, over the SPI interface pins (I2S_WA / SPI_MOSI, I2S_RXD / SPI_MISO, I2S_CLK / SPI_CLK,

I2S_TXD / SPI_CS).

2.7 GPIO

SARA-R4 series modules include pins that can be configured as general purpose input/output or to

provide custom functions as summarized in Table 4 (for further details, see the SARA-R4 series

system integration manual [2] and the SARA-R4 series AT commands manual [1]).

Function

Description

Default GPIO

Configurable GPIOs

Network status

indication

Network status: registered / data transmission, no

service

GPIO1

GNSS supply enable 19 Enable/disable the supply of a u-blox GNSS receiver

connected to the cellular module by the DDC (I2C)

interface

GPIO2

GNSS data ready 19

Sense when a u-blox GNSS receiver connected to the

module is ready for sending data by the DDC (I2C)

interface

GPIO3

SIM card detection

SIM card physical presence detection

GPIO5

Ring Indicator 20

Events indicator

Module status

indication

Module switched off or in PSM low power deep sleep

mode, versus active or connected mode

GPIO1, GPIO2, GPIO3,

GPIO4, GPIO5, GPIO6

Last gasp 20

Input to trigger last gasp notification

GPIO3, GPIO4, GPIO6

LwM2M pulse 21

Output to notify a settable LwM2M event with a

configurable pulse

GPIO1, GPIO2, GPIO3,

GPIO4, GPIO5, GPIO6

General purpose input Input to sense high or low digital level

GPIO1, GPIO2, GPIO3,

GPIO4, GPIO5, GPIO6

General purpose

output

Output to set the high or the low digital level

GPIO1, GPIO2, GPIO3,

GPIO4, GPIO6

Pin disabled

Tri-state with an internal active pull-down enabled

GPIO1, GPIO2, GPIO3,

GPIO4, GPIO5, GPIO6,

GPIO1, GPIO2, GPIO3,

GPIO4, GPIO5, GPIO6,

Table 4: GPIO custom functions configuration

19 Not supported by “00” and “01” product versions

20 Not supported by “00”, “01” and SARA-R410M-02B-00 product versions

21 Not supported by “00”, “01” and “x2” product versions

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