Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
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Functional Block Diagram
The mezzanine is connected to 96Boards carrier board through Low Speed and High
Speed Connectors (left). Expansion connectors (right) allows to plugin additional
96Boards mezzanines as needed.
The board is connected to 1.8V and 5V power feeds. LDO regulators provide 3.8V
and 3.3V for distribution to the different components.
Quectel EC25 CAT-4 LTE Modem :
o
The module is powered by 3.8V.
o
Connected to 96Boards carrier board USB0 (HS connector), UART0, I2C0,
GPIO A,B,C,K (LS Connector) and (u)SIM connector.
o
Connected to two RF antenna jacks: Main and GNSS.
Bosch BNO055 9 axis absolute orientation sensor is powered by 3.3V. It is connected
to 1.8V I2C1 bus and GPIO D,E and F.
Analog Devices ADUX1020 gesture and proximity sensor is powered by 1.8V. It is
connected to I2C1 bus and GPIO G.
ST VL53L0CX range sensor is powered by 3.3V. It is connected to 1.8V I2C1 bus and
GPIO J.
Analog Devices ADT7410 temperature sensor is powered by 3.3V. It is connected to
I2C1 through 1.8V to 3.3V I2C buffer and to GPIO H and I.