SARA-R5 datasheet(17/43 Pages) U-BLOX

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SARA-R5 series - Data sheet

UBX-19016638 - R06

Interfaces

Page 17 of 43

C1-Public

2.5.4 SDIO interface

☞ The SDIO interface is not supported by the “00” products version of SARA-R5 series modules.

SARA-R5 series modules include a 1.8V 4-bit Secure Digital Input Output interface over the SDIO_D0,

SDIO_D1, SDIO_D2, SDIO_D3, SDIO_CLK and SDIO_CMD pins, with the module acting a an SDIO host,

available for communications with compatible external SDIO devices, and for diagnostic purpose.

☞ Accessible test points directly connected to the SDIO_D0, SDIO_D1, SDIO_D2 and SDIO_D3 pins

may be provided for diagnostic purpose, alternatively to the highly recommended accessible test

points provided on the USB interface pins.

2.5.5 DDC (I2C) interface

☞ Communication with an external GNSS receiver is not supported by SARA-R510M8S modules.

SARA-R5 series modules include a 1.8V I2C-bus compatible DDC interface over the SDA and SCL pins,

available to communicate with an external u-blox GNSS receiver and with external I2C devices as for

example an audio codec: the SARA-R5 series module acts as an I2C master that can communicate

with I2C slaves in accordance with the I2C bus specifications [10].

☞ It is recommended to provide accessible test points directly connected to the SDA and SCL pins

for diagnostic purpose.

2.6 Audio

☞ Audio is not supported by the “00” products version of SARA-R5 series modules.

SARA-R5 series modules include a 1.8V I2S digital audio interface over the I2S_TXD, I2S_RXD,

I2S_CLK and I2S_WA pins, available to transfer digital audio data with an external digital audio device.

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