STAR INSTRUMENT MJ001-01 Wi-SUN Module User Manual

Product Manual of
MJ001-01
Wi-SUN Module
Shenzhen Star Instrument Co., Ltd.
User Manual

Overview

MJ001-01 module is a radio frequency communication module of Wi-SUN protocol developed by Shenzhen Star Instrument Co., LTD. The module consists of the SOC and its peripheral circuit that integrates RF transceiver and Wi-SUN protocol processing, and adopts serial interface for data and instruction interaction with user devices, which can conveniently provide users with fast Wi-SUN protocol wireless terminal communication and other services.
The size of MJ001-01 module is 37mm18.9mm4.0mm. It has the features of minimal size, low power consumption, and long transmission distance. It is suitable for automatic meter reading system of interconnection under Wi-SUN protocol framework.

1.1 Electrical parameters

Interface

When the module is connected to the user mainboard, it mainly includes serial port interfaces, reset, event detection, debug printing, status output, and power supply interfaces, etc.
2.1 Module pin definition

effective
2, 16, 29,
30, 31| GNU| Ground pins|
3| RESET| Module reset input pin| 3.3V TTL level
4| POWER_CHK| Module power failure
detection pin| The comparator interrupt is inside
the module chip.
5| EVEN IN| Event trigger signal input
pin|
6| UARTO_RX| Input pin of serial port
UART2| Reserved UART serial port
7| UART2 TX| Output pin of serial port
UART2
8| SWO| DEBUG output pin SWO| Debugging and firmware
download ports. SWO is reserved
for advanced simulation ports to
show simulation process
information, which is also
optional.
9| SWDIO| DEBUG data input and
output
10| SWCLK| DEBUG clock input
11| Dout_BER| BER test demodulation
data outlet| Only used for receiving
sensitivity BER test
12| Flash_CS| External Flash chip
selection output| 3.3V TTL level signal
13| Flash_CLK| External Flash clock
output
14| Flash M ISO| External Flash data input
15| Flash MOSI| External Flash data
output
17| 3.3Vp| 3.3V power output| Module 3.3V power input pin
18| UART1_RX| Input pin of serial port
UART 1| Serial port for communication
with electricity meter and DCU,
3.3V TTL level
19| UART1 TX| Output pin of serial port
UART1
20| LED STATE| State indicator control
output| 3.3V TTL level
21| LED TX| TX indicator control
output
22| LED RX| RX indicator control
output
23| UARTO_RX| Input pin of serial port| Debug print output serial port,
| | UARTO| 3.3V TTL level
---|---|---|---
24| UARTO TX| Output pin of serial port
UARTO
25| PAO| Reserved data port|
26| PD15| Reserved data port|
27| PD14| Reserved data port|
28| PD13| Reserved data port|
32| ANT| Antenna interface| Pay attention to the SOO
impedance control for external wiring.

2.2 Hardware interface description
When designing the hardware of the MJ001-01 module, select and design the required interfaces and peripheral circuits according to the actual application. The application interfaces of the MJ001-01 module are as follows:

• External power supply
• Reset
• SPI
• UART
• Module status indicator
• Event detection
• Debug print

2.2.1 External power supply
Before using the module, the user must first ensure that the external power supply has sufficient power load capacity and the power supply range must be strictly controlled between 1.8V and 3.8V. If the value is higher than the power supply range of the module, the main chip of the module will be damaged. If the value is lower than the power supply range of the module, the RF circuit will be affected and the maximum output power cannot be guaranteed.
2.2.2 Reset
The reset pin is a low level reset. The module will be reset if the user provides a low pulse of at least 1ms to the NRST pin (or directly pulling down). It is suggested to add a 4.7kΩ resistance to the power supply in normal mode.
2.2.3 SPI
The SPI interface is a four-wire SPI, which can be used for modules to extend an external FLASH storage or be taken as other communication interfaces.
2.2.4 Module status indicator
The pins of the module status indicator are pin20 LED_STATE, pin21 LED_TX and pin22 LED_RX, which are respectively the module working status indicator, RF signal sending indicator and receiving indicator, and external LED indicator. They are both common-anode connections.
2.2.5 UART
The UART serial port is used for the module to communicate with and exchange data with the external working platform.
2.2.6 Event detection
The event detection interface detects the event output of the external application function circuit, such as the power failure event along with the reporting of other function events.
2.2.7 Debug print
With the Debug interface, you can simulate and burn the firmware of the SOC chip of the module, and the system running information can be output through the print interface, so that you can see the running information directly.

Antenna Design Suggestions

Antenna design is directly related to the communication performance of the product.
Different types of antennas are selected for different terminals according to the antenna size, cost, and performance. Common short-range antennas include PCB antenna, chip (ceramic) antenna, spring antenna, whip antenna, etc. When selecting an antenna, the following most important parameters should be considered: radiation variation in different directions around the antenna, antenna efficiency, bandwidth required for antenna operation, and power to be provided to the antenna, etc. The typical definition of antenna bandwidth is the frequency range where the reflected wave attenuation is less than -10dB or VSWR is less than 2, that is, the frequency range where the reflected power of the antenna is less than 10%.

Product Material Object

Module size: 37mm18.9mm4.0mm, and the actual product is as follows:
The front view: The back view:

Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01
5.1 List of applicable FCC rules FCC Part 15 Subpart C 15.247
5.2 Specific operational use conditions.
This device is intended only for OEM integrators under the following conditions:

1.  The transmitter module may not be co-located with any other transmitter or antenna. As long as the condition above is met. further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.
   IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter)
   and obtaining a separate FCC authorization. The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual.

5.3 Limited module procedures.
Additional testing and certification is necessary when specific host originally granted with this module. This module is Limited single modular , host manufacturer have to consult with module manufacturer for the module limiting conditions when integrate the module in the host. module manufacturer should reviews detailed test data or host designs prior to giving the host manufacturer approval.
5.4 Trace antenna designs .Not applicable .
The module may be operated only with the PCB antenna with which it is authorized.
5.5 RF exposure considerations Co-located issue shall be met as mentioned in “Specific operational use conditions”. Product manufacturer shall provide below text in end-product manual “Radiation Exposure Statement: The product comply with the US portable RF exposure limit set forth for an uncontrolled environment and are safe for intended operation as described in this manual. The further RF exposure reduction can be achieved if the product can be kept as far as possible from the user body or set the device to lower output power if such function is available.”
5.6 Antennas Model name: PCB on-board antenna
Antenna type:PCB antenna
Antenna gain:1.71dBi
5.7 Label and compliance information
Product manufacturers need to provide a physical or e-label stating “Contains FCC ID:
2A2X4-MJ001-01” with finished product
5.8 Information on st modes and additional testing requirements
Test tool: SSCOM V5.13.1 shall be used to set the module to transmit continuously
5.9 Additional testing , Part 15 subpart B disclaimer
The module is only FCC authorized for the specific rule parts listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.
5.10 FCC Requirement
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. this device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

Note : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•  Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
  This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

“ CAUTION : Any changes or modifications not expressly approved could void the user’s authority to operate the equipment.”

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