User's Manual

TOBY-R2 series - Data Sheet
UBX-16005785 - R06 Interfaces
Page 15 of 41
USB drivers are available for the following Windows and Windows Embedded operating system platforms:
 Windows 7
 Windows 8
 Windows 8.1
 Windows 10
 Windows Embedded CE 6.0
 Windows Embedded Compact 7
 Windows Embedded Compact 2013
TOBY-R2 series modules are compatible with standard Linux/Android USB kernel drivers.
2.5.3 DDC (I
2
C) interface
Communication with u-blox GNSS receivers over DDC (I
2
C) is not supported by “02” product versions.
TOBY-R2 series modules include an I
2
C-bus compatible DDC interface (SDA, SCL) available to communicate with
a u-blox GNSS receiver and with external I
2
C devices as an audio codec: the TOBY-R2 module acts as an I
2
C
master which can communicate with I
2
C slaves in accordance with the I
2
C bus specifications [16].
For more details regarding the DDC (I
2
C) interface usage and the integration with a u-blox GNSS receiver see the
TOBY-R2 series System Integration Manual [2], the GNSS Implementation Application Note [5], and the I
2
C and
GNSS AT commands description in the u-blox AT Commands Manual [1].
2.5.4 SDIO interface
The SDIO interface is not supported by “02” modules product versions.
TOBY-R2 series modules include a 4-bit Secure Digital Input Output interface (SDIO_D0, SDIO_D1, SDIO_D2,
SDIO_D3, SDIO_CLK, SDIO_CMD) designed to communicate with external compatible u-blox short range radio
communication Wi-Fi modules.
2.6 Audio
TOBY-R2 series modules support Voice over LTE (VoLTE) as well as Circuit-Switched Fall-Back (CSFB) from LTE to
3G or 2G radio bearer for providing audio services.
TOBY-R2 series modules include a 4-wire I
2
S digital audio interface (I2S_TXD, I2S_RXD, I2S_CLK, I2S_WA) that
can be configured by AT command in PCM mode (short synchronization signal) or in normal I
2
S mode (long
synchronization signal) to transfer digital audio data to/from an external device as an audio codec.
For more details regarding internal audio processing system capabilities, I
2
S digital audio interface possible
configurations, usage and guideline for the integration with an external digital audio device as an audio codec
see TOBY-R2 series System Integration Manual [2] and the audio sections in u-blox AT Commands Manual [1].
2.7 Clock output
TOBY-R2 series modules provide a master digital clock output function on the GPIO6 pin, which can be
configured to provide a 13 MHz or 26 MHz square wave. This is mainly designed to feed the master clock input
of an external audio codec, as the clock output can be configured in “Audio dependent” mode (generating the
square wave only when the audio path is active), or in “Continuous” mode.
For more details see the u-blox AT Commands Manual [1], +UMCLK AT command.