Neoway N75 EVK User manual

EVK User Guide
Issue 1.0 Date 2019-10-16

N75 EVK User Guide
Copyright
Copyright © Neoway Technology Co., Ltd
i
Copyright © Neoway Technology Co., Ltd 2019. All rights reserved.
No part of thisdocument may bereproduced or transmitted in any form orby any means withoutprior written
consent of Neoway Technology Co., Ltd.
is the trademark of Neoway Technology Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
This document provides a guide for users to use N75.
This document is intended for system engineers (SEs), development engineers, and test engineers.
THIS GUIDE PROVIDES INSTRUCTIONS FOR CUSTOMERS TO DESIGN THEIR APPLICATIONS.
PLEASE FOLLOW THE RULES AND PARAMETERS IN THIS GUIDE TO DESIGN AND COMMISSION.
NEOWAY WILL NOT TAKE ANY RESPONSIBILITY OF BODILY HURT OR ASSET LOSS CAUSED BY
IMPROPER OPERATIONS.
THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE DUE TO
PRODUCT VERSION UPDATE OR OTHER REASONS.
EVERY EFFORT HAS BEEN MADE IN PREPARATION OF THIS DOCUMENT TO ENSURE ACCURACY
OF THE CONTENTS, BUT ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS
DOCUMENT DO NOT CONSTITUTE A WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.
Neoway provides customers complete technical support. If you have any question, please contact your
account manager or email to the following email addresses:
[email protected]
[email protected]
Website: http://www.neoway.com

N75 EVK User Guide
Table of Tables
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Contents
1 Overview....................................................................................................1
2 About N75 EVB..........................................................................................2
3 Connection and Power ..............................................................................4
3.1 Micro_USB Cable......................................................................................................................... 4
3.2 Power Supply ............................................................................................................................... 4
3.2.1 5V/3A Adapter...................................................................................................................... 4
3.2.2 M5X0-PWR Board............................................................................................................... 5
4 Commissioning ..........................................................................................7
4.1 Through Serial Port ...................................................................................................................... 7
4.2 Through USB Port........................................................................................................................ 8

N75 EVK User Guide
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About This Document
Scope
This document is applicable to the N75 series.
Audience
This document is intended for system engineers (SEs), development engineers, and test engineers.
Change History
Issue
Date
Change
Changed By
1.0
2019-10
Initial draft
Bale Chang
Conventions
Symbol
Indication
This warning symbol means danger. You are in a situation that could cause fatal
device damage or even bodily damage.
This means the reader be careful. In this situation, you might perform an action
that could result in module or product damages.
Means note or tips for readers to use the module
Related Documents
Neoway_N75_Datasheet
Neoway_N75_Product_Specifications

N75 EVK User Guide
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Neoway_N75_HW_User_Guide
Neoway_N75_AT_Command_Mannual

N75 EVK User Guide
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1 Overview
N75 EVB is designed to commission and test the N75 module. It provides one power interface, two
UART interfaces, one USB interface, one SIM card interface, antenna interfaces, and one PWRKEY
button. Developers can connect it to a power supply and a computer through the USB cable or serial-
to-USB cable to commission the functions of the module.
N75 EVK provides the following items:
⚫N75 EVB (including N75 module)
⚫M5X0-PWR power cable
⚫Micro-USB cable
⚫Others (power adapter, jumper caps, LTE antenna)

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2 About N75 EVB
This chapter describes the hardware layout of the N75 EVB.
Figure 2-1 Top view of N75 EVB
In Figure 2-1, each interface and keys of N75 is marked in red rectangles. Read this user guide carefully
before using N75 EVB. If necessary, please refer to the schematic diagram and PCB file of the board.
Table 2-1 lists each interface or button and their functions.

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Table 2-1 Interfaces and button of N75 EVB
No.
Interface/Button
Description
1
N75
4G module
2
PWRKEY button
After supplying power to the module, hold this button for more
than 1 second to start the module
3
USB_BOOT button
Force the module to enter download mode
4
RESET_N button
Hold this button for more than 1 second to reset the module
5
High-level start pin
To start the module by a high level
6
USB port
To download firmware or send AT command
7
SIM connector
Micro-SIM card
8
5V DC power port
Main power supply, ranging from 3.6V to 4.5V
9
Power control switch
To control the power supply
10
3.8V LDO regulator
Level shift
11
3.3V LDO regulator
Level shift
12
Indicators
Power, ring, network
13
UART2
Used to commission the module
CANNOT be used to supply power
14
UART3
Not supported
15
Antenna interfaces
Diversity antenna connector, GPS antenna connector, 2G/3G/4G
antenna connector

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3 Connection and Power
3.1 Micro_USB Cable
A micro-USB cable is used to connect N75 to a computer for USB or UART communication. The USB
interface of N75 EVB is used for communication only. It cannot be used to supply power for the EVB.
Use a power adapter for power supply.
Figure 3-1 USB cable
3.2 Power Supply
N75 EVB supports different types of power supply:
⚫Adapter, 5V@3A
⚫M5X0-PWR board, 3.9V through UART1
3.2.1 5V/3A Adapter
Figure 3-1 shows the recommended power adapter for N75 EVB.

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Figure 3-2 Power adapter
3.2.2 M5X0-PWR Board
M5X0-PWR board is developed on PL2303 chipset by Neoway and used to convert USB to UART. You
can also choose another USB-to UART cable/board based on FT2232, CP210X, and other chipsets.
M5X0-PWR is connected to the N75 EVB through 4-pin cables, which have been soldered to the power
board in a sequence of red, black, yellow, and green at one end and should be inserted into the plug
of the EVB at the other end. Among the 4-pin cables:
⚫Green
Module TXD, outputs 3.3 V CMOS level
⚫Yellow
Module RXD, inputs maximum 3.3 V CMOS level
⚫Black
Ground
⚫Red

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3.8 V power supply. It is not applicable to N21 EVB.
To use the UART function, install the USB-to-UART driver (PL2303) first. If an MCU is used to control
the module, connect the as shown in the following figure:
RXD
TXD
TXD
RXD
GND GND
DTE DCE
3.8V

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4 Commissioning
N75 can be commissioned either through a serial port or a USB port. This chapter describes how to
connect the module and how to implement commissioning through either port.
4.1 Through Serial Port
Step 1: Use the 5V adapter to supply power, power up the N75 EVB and connect it to the computer
through the M5X0-PWR board.
Add a jumper next to the serial port connector.
Step 2: Install the PL2303 driver.
Obtain the driver package from Neoway FAE or download it from the Internet if you use the serial-to-
USB cable Neoway provided.

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Step 3: Start the Neo_ComTool and send AT commands.
4.2 Through USB Port
Perform the following steps to commission N75 through USB port:
Step 1: Use the 5V adapter to supply power, power up the N75 EVB and connect it to the computer
through USB.

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Step 2: Update the N75 USB drivers on your computer.
If the computer runs Windows 8 or 10, disable driver signature enforcement before updating the USB
drivers.
Step 3: Start the Neo_ComTool and send AT commands.