Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
1
Shiratech LTE and Sensor
Mezzanine
User Manual V0.1
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
2
Introduction
Shiratech LTE and Sensor Mezzanine is a 96Boards compatible mezzanine board that adds
LTE modem functionality and a set of sensors to any 96Boards compatible board, both
consumer addition (CE) and enterprise edition (EE).
The mezzanine consists of the following key elements:
Quectel EC25 LTE – A high throughput LTE CAT-4 delivering 150Mbit/s downlink
50Mbit/s uplink data rates.
Bosch BNO055 – A high quality 9-axis absolute orientation sensor that includes a
triaxial gyroscope, triaxial accelerometer and magnetometer.
Analog Device ADUX1020 – Gesture and proximity sensor.
ST VL53L0CX – Range and gesture detection sensor.
Analog Device ADT7410 – High accuracy digital temperature sensor.
96Boards High Speed and Low Speed Expansion connectors - allows to plugin
additional 96Boards mezzanines as needed.
Quectel EC25
Main and GNSS
Antennas
Bosch BNO055
ST VL53L0CX
AD ADUX1020
HS Expansion Connector
LS Expansion Connector
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
3
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.
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
4
Power Supply
The board accepts 5V and 1.8V from the 96Boards connector. There are two low dropout
voltage regulators on the board providing 3.3V and 3.8V.
Low dropout voltage regulator LD1117S33TR accepts input voltage of 5V and
provide 3.3V 0.8A. The following components are powered by this regulator:
BNO055, VL53L0CX, ADT7410.
Low dropout voltage regulator LT1764AEQ-ADJ accepts input voltage of 5V and
provide 3.8V 3A to Quectel EC25 modem module.
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
5
Quectel EC25 LTE Modem
Quectel EC25 is a series of LTE category 4 module optimized specially for M2M and IoT
applications. Adopting the 3GPP Rel. 11 LTE technology, it delivers 150Mbit/s downlink and
50Mbit/s uplink data rates. Designed in the compact and unified form factor, EC25 is
compatible with Quectel MTS/HSPA+ UC20 module and multi-mode LTE EC20/EC21 module,
which allows for flexible migration among them in design and manufacturing.
EC25 contains 6 variants: EC25-V, EC25-J, EC25-A, EC25-AU, EC25-AUT and EC25-E. This
makes it backward-compatible with existing EDGE and GSM/GPRS networks, ensuring that it
can be connected even in remote areas devoid of 4G or 3G coverage.
EC25 supports Qualcomm® IZat™ location technology Gen8C Lite (GPS, GLONASS, BeiDou,
Galileo and QZSS). The integrated GNSS greatly simplifies product design, and provides
quicker, more accurate and more dependable positioning.
A rich set of Internet protocols, industry-standard interfaces and abundant functionalities
(USB drivers for Windows XP, Windows Vista, Windows 7/8/8.1/10, Linux, Android/eCall)
extend the applicability of the module to a wide range of M2M and IoT applications such as
industrial router, industrial PDA, rugged tablet PC, video surveillance, and digital signage.
The Quectel EC25 CAT-4 LTE Modem module is powered by 3.8V.
It is connected to 96Boards carrier board USB0 (HS connector), UART0, I2C0, GPIO A,B,C,K
(LS Connector) and (u)SIM connector.
RF lines connected to two RF antenna jacks: Main and GNSS.
Four LEDs are used to indicate modem status.
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
6
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
7
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
8
Bosch BNO055
The BNO055 is a System in Package (SiP) integrating a triaxial 14 bit accelerometer, a triaxial
16 bit gyroscope with a range of ±2000 degrees per second, a triaxial geomagnetic sensor
and a 32 bit cortex M0+ microcontroller running Bosch Sensortec sensor fusion software, in
a single package.
The corresponding chipsets are integrated into one simple 28 pin LGA 3.8mm x 5.2mm x
1.1mm housing. For optimum system integration the BNO055 is equipped with digital
bidirectional I2C and UART interfaces.
The Bosch BNO055 absolute orientation sensor VDD pins are powered from 3V3 power.
The sensor is connected to the CPU through I2C1 bus.
Sensor I2C address: 0x28
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
9
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
10
Analog Devices ADUX1020
The ADUX1020 is a highly efficient photometric sensor with an integrated 14-bit analog-todigital converter (ADC) and a 20-bit burst accumulator that works in concert with a flexible
light emitting diode (LED) driver. It is designed to modulate a LED and measure the
corresponding optical return signal. The digital
engine includes circuitry and control for data aggregation and proximity detection.
The data output and device configuration use a 1.8 V I2C interface.
The control circuitry includes flexible LED pulse width and period generation combined with
synchronous detection. This circuitry is complemented by a low noise, low power, and wide
dynamic range configurable analog front end (AFE), clock generation, LED driver, and digital
logic for position and smart sample mode (event driven x, y coordinates, relative z data).
This complete AFE features ambient light rejection, avoiding corruption due to external
interference.
One inexpensive standard surface mount, broad angle or narrow angle IR LED (depending
upon application) is required. This LED mounts externally to the ADUX1020.
Packaged in a small, clear mold, 2 mm × 3 mm, 8-lead LFCSP, the ADUX1020 is specified over
an operating temperature range of −40°C to +85°C.
The Analog Devices ADUX1020 gesture and proximity sensor is powered by 1.8V. It is
connected to I2C1 bus and GPIO G.
The sensor controls a high power infrared emitter, SFH4056. It receives the IR returning from
an object for gesture and proximity analysis.
Sensor I2C address: 0x64
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
11
ST VL53L0CX
The VL53L0X is a new generation Time-of-Flight (ToF) laser-ranging module housed in the
smallest package on the market today, providing accurate distance measurement whatever
the target reflectance's unlike conventional technologies. It can measure absolute distances
up to 2m, setting a new benchmark in ranging performance levels, opening the door to
various new applications.
The VL53L0X integrates a leading-edge SPAD array (Single Photon Avalanche Diodes) and
embeds ST’s second generation FlightSenseTM patented technology.
The VL53L0X’s 940nm VCSEL emitter (Vertical Cavity Surface-Emitting Laser), is totally
invisible to the human eye, coupled with internal physical infrared filters, it enables longer
ranging distance, higher immunity to ambient light and better robustness to cover-glass
optical cross-talk.
The ST VL53L0CX time of flight range and gesture detection sensor is powered by 3.3V. It is
connected to 1.8V I2C1 bus and GPIO J.
Sensor I2C address: 0x52
Shiratech Solutions LTE and Sensor Mezzanine for 96Boards – User Manual
12
Analog Devices ADT7410
The ADT7410 is a high accuracy digital temperature sensor in anarrow SOIC package. It
contains a band gap temperature reference and a 13-bit ADC to monitor and digitize the
temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to13 bits
(0.0625°C). This can be changed to 16 bits (0.0078°C) by setting Bit 7 in the configuration
register (Register Address 0x03).
The ADT7410 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at
3.3 V, the average supply current is typically 210 μA. The ADT7410 has a shutdown mode
that powers down the device and offers a shutdown current of typically 2 μA.
The ADT7410 is rated for operation over the −55°C to +150°C temperature range.
Pin A0 and Pin A1 are available for address selection, giving the ADT7410 four possible I2C
addresses. The CT pin is an opendrain output that becomes active when the temperature
exceeds a programmable critical temperature limit. The default critical temperature limit is
147°C. The INT pin is also an open-drain output that becomes active when the temperature
exceeds a programmable limit. The INT and CT pins can operate in either comparator or
interrupt mode.
The Analog Devices ADT7410 high accuracy 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.
Sensor I2C address: 0x48
Loading...