Modular Gateway Hardware User's Guide · 2016-11-17 · Chapter 1 Introduction Volansys presents you a smart modular customizable multi-service reference design of Gateway for Internet

Modular Gateway Hardware User's Guide

NXP Semiconductors Document Number: MGHWUG

User's Guide Rev 0, 10/2016

Contents

Chapter 1 Introduction....................................................................................3

Chapter 2 Specification.................................................................................. 5

Chapter 3 Contents of the Modular Gateway Kit........................................17

Chapter 4 Acronyms and Abbreviations.....................................................18

Chapter 5 References....................................................................................19

Chapter 6 Revision History.......................................................................... 20

Contents

Modular Gateway Hardware User's Guide, Revision 0, October 20162 NXP Semiconductors

Chapter 1Introduction

Volansys presents you a smart modular customizable multi-service reference design of Gateway for Internet of Things namedas – “Modular Gateway”, targeted for multiple use cases in various segments of IoT such as Smart Home, Buildings andIndustries. Core features are its Modular Hardware Design and Multi-Radio Connectivity (i.e. Wi-Fi, BLE, NFC, Thread andZigBee) .

This document is the hardware user guide for Modular Gateway. This manual provides detail information about major designperipherals and its usage criteria. It also includes systems setup & debugging information from hardware systems perspective.

1.1 Board overview

Figure 1. Modular gateway

The Modular Gateway development kit, based on i.MX6UltraLite introduces developers to the i.MX6UL based SOM board.This gateway will help users to develop and run their IoT based concept using wireless interfaces like Wi-Fi, BLE, NFC,ZigBee and Thread. It supports Wi-Fi and Ethernet for connection with cloud.

Modular Gateway supports various hardware module through MikroBUS Header such as Volansys’ KW2xD and KW41ZThread and other Mikrobus standard supported modules. Also PN7120 base NFC module and NXP JN5169 ZigBee Module.

Figure 2. Modular Gateway With Inbuilt Peripheral

The following features are available with the Modular Gateway development board:

• CPU

Introduction

Board overview

Modular Gateway Hardware User's Guide, Revision 0, October 2016NXP Semiconductors 3

• i.MX 6UltraLite applications processor with a 528 MHz ARM® Cortex®-A7 core

• Memory

• 256MB DDR3L SDRAM

• 1GB NAND Flash

• Micro SD connector

• Communication and Connectivity

• 1x 10/100Mbps Ethernet connector

• 1x USB 2.0 Host connector

• 1x USB 2.0 Host connector (Device mode support)

• MikroBus compatible header to support mikroBUS compatible Volansys’ RF modules (like; KW41Z, KW2xD) & otherMikroBUS’ click modules

• Wi-Fi + BT module from Murata

• NFC module using PN7120 controller for commissioning

• Other I/O

• 1x Debug port via USB micro-B connector

• 1x Power LED, 2x Status LED

• 1x User Switch (for commissioning), 1x reset Switch

• JTAG connector

• Power Supply

• DC Input - 5V/3A

Introduction

Board overview


Chapter 2Specification

Modular Gateway implements a variety of peripheral interfaces through the SODIMM-200 connector to connect with i.MX6ULbased SOM. This section provides detailed information about electrical design & practical consideration of differentperipherals of Modular Gateway.

The architecture block diagram of Modular Gateway board is shown as below:

Figure 3. Architecture Block Diagram

The overview of Modular Gateway Base and SOM board is shown in following figures.

Figure 4. SOM Board

Specification


Figure 5. Base Board

2.1 i.MX6ULThe i.MX 6UltraLite is an ultra-efficient processor family with featuring Freescale’s advanced implementation of the singleARM Cortex®-A7 core, which operates at speeds of up to 528 MHz.

The device is composed of the following major subsystems:

Single-core ARM Cortex-A7 MPCore™ Platform

• 32 Kbytes L1 Instruction Cache

• 32 Kbytes L1 Data Cache

• Private Timer and Watchdog

• Trust Zone support

• Cortex-A7 NEON MPE (Media Processing Engine) Co-processor

2.2 BOOT Mode ConfigurationModular Gateway supports three different boot modes as shown below,

• Boot From Fuses

• Serial Downloader

• Internal Boot

Switch configuration for different boot mode selection is shown in below table:

Specification

i.MX6UL


Table 1. i.MX6 Ultra Lite SOM DIP SW01 Configuration

BMODE [1:0] BOOT Mode

0 0 Boot from fuses

0 1 Serial Downloader

1 0 Internal Boot

1 1 Reserved

Figure 6. SW01 Settings for Boot Mode Selection

2.2.1 Serial DownloaderModular Gateway supports serial download option for initial boot process.

It is also required to change USB mode to device for serial download. USB-2 (J17) connector supports both modes. Detailsfor USB mode change is provided in sec. 3.5.

Follow below steps to enter into serial download boot option:

• Make SW01 setting as per Table-3

• Modify jumpers setting for USB-2 to enable device mode operation as shown in Table- 5

• Connect Standard USB type-A to type-A cable with USB-2 (J17) connector.

• Power up the device

2.2.2 Internal BootTypically internal boot is selected for normal boot.

Module supports NAND flash and micro SD card as Boot Device. To select the boot device it is required to configure externalBOOT configuration resistors as shown in below table.

Specification

BOOT Mode Configuration


Table 2. i.MX6 Ultra Lite SOM BOOT Device Configuration

BOOT Device Configuration

Micro SD Populated Resistors:

R50, R57, R68, R56, R54, R64, R70, R69, R72, R58, R73,R60, R74, R61, R118, R133

DNP Resistors:

R59, R71, R127, R120, R136, R121, R123, R140, R134,R135, R132, R119, R131, R117, R130, R116

NAND Populated Resistors:

R50, R57, R68, R56, R64, R70, R69, R59, R58, R71, R73,R60, R74, R61, R123, R132

DNP Resistors:

R54, R72, R127, R120, R136, R121, R140, R134, R135,R118, R119, R133, R131, R117, R130, R116

Configuration resistors position on SOM Board is show in below images:

Figure 7. Resistor Settings for Boot Device Selection (Top Side)

Specification

BOOT Mode Configuration


Figure 8. Resistor Settings for Boot Device Selection (Bottom Side)

If user require to change boot mode or boot device selection then it is recommended to follow below steps: (shown for internalboot mode and NAND as boot device)

• Change DIP SW01 to ON, OFF [From 1-2 Bit] to enter internal BOOT Mode.

• Make resistors setting as shown in Table-2 below to BOOT from NAND flash.

• After the board images are programmed, and the BOOT switches is correctly configured, system is ready to Run.

• Power ON Modular Gateway Board.

2.3 Memory

2.3.1 DDR3• Modular Gateway is equipped with 256 MB DDR3L Memory which is upgradable up to 1 GB

2.3.2 NAND Flash• Gateway is available with on-board NAND (1GB) flash.

2.3.3 Micro SD Card Slot (J18)• Micro SD slot (J18) is provided on Modular gateway.

• It is connected to USDHC1 interface of i.MX 6UltraLite on SOM Module.

2.4 Ethernet Connector (J15)Modular Gateway incorporates a single full-featured 10/100 Ethernet interface, implemented with the i.MX6UL MAC-NETcore in conjunction with a 10/100-Mbit/s MAC coupled with an on-board 10/100 PHY.

Specification

Memory


The modular Gateway comes with following features:

• Integrated PHY on SOM for 10/100 Mbps

• Auto-negotiation support

• Programmable MAC address

2.5 USB ConnectorsThe USB interface block provides two High speed USB port, which supports USB ver. 2.0. Initially both the connectors willact as host. User can configure USB-2(J17) port as device also by modifying jumpers setting. USB-1 (J16) will work as hostonly.

Jumper setting for USB-2 port host and device mode are shown in below table:

Table 3. Gateway USB Configuration

USB-2 HOST USB-2 DEVICE

JUMPER 1 (J30) CLOSE OPEN

JUMPER 2 (J29) OPEN CLOSE

When using serial download option for Boot, USB-2(J17) will be used in Device mode. It is required to change Jumper settingto enable device mode.

2.6 Wi-Fi and BluetoothModular Gateway provides support of Single Band (2.4GHz) Wi-Fi and Bluetooth using Murata’s LBEE5KLDX RF moduleon board.

The Modular Gateway supports following features:

• Support of single band IEEE 802.11b/g/n Wi-Fi

• Bluetooth ver. 4.1 + EDR compliant

• Provides SDIO interface for Wi-Fi and UART interface for Bluetooth operation

• External u.fl connectors is connected with antenna line of module to provide external Whip antenna support

2.7 USB Debug Connector (J20)Modular Gateway comes with one microUSB debug port support to simplify debugging mechanism.

A CP2102, USB to serial UART IC is used to convert the UART signals to USB. A micro-B to standard A USB cable can beused. UART1 port is used as the debug port.

The required terminal settings are shown in the following table:

Table 4. Terminal Settings

Baud Rate 115200

Table continues on the next page...

Specification

USB Connectors


Table 4. Terminal Settings (continued)

Data Bits 8

Parity None

Stop Bits 1

Flow Control None

2.8 JTAG Connector (J21)J21 has been used as JTAG connector, it’s a 10 pin header. User will require to have 10 to 20-pin convertor to use standardJTAG debugger.

Pin out of JTAG header are shown in below figure.

Figure 9. JTAG Pin Definition

2.9 User Interface Switch

2.9.1 Commissioning Switch (SW1)SW1 is used to start/stop NFC commissioning mode. It is also used to power off the gateway board by long pressing it formore than 15 sec.

Figure 10. Modular Gateway Back Side

Specification

JTAG Connector (J21)


Different control mechanism for switch is provided as below:

Table 5. User Interface Switch

Switch Control Last State Next State

SW1 Short Press

( >5sec &

< 15sec)

NFC Commission WindowOff

Start NFC commissionwindow

NFC Commission WindowON

Stop NFC commissionwindow

Long press

(> 15sec)

Any Power off gateway board

2.9.2 Reset SwitchOne reset switch is provided for user, to reboot the system without removing power supply. Pressing the switch will drive logiczero on RESETn signal, which will affects every modules on gateway.

2.10 User LED IndicationsTwo dual color LEDs are used to provide indication about different Gateway functionalities. Below table indicates color markto represent specific events.

Table 6. User LED Indications

LED Behavior Represents

LED1 Green Connected to cloud

Red Not Connected to cloud

Orange Connecting to cloud

LED2 Green Commission window is On

Orange Commission window is Off

Blink fast for 10 times ED Commission successful

Blink slow for 5 times ED Commission failed

User can change LEDs behavior based on their use case scenario.

NOTE

2.11 NFC ControllerModular gateway have NFC Module Header for NFC Connectivity. It’s have PN7120 NFC Controller from NXP Semiconductor.

Specification

User LED Indications


Figure 11. NFC Controller

2.12 MikroBus Compatible HeadersModular gateway contains two standard MikroBUS header which provides SPI, I2C & UART interface and other Mikrobusstandard support signals. MikroBUS standard click board can be used with Modular Gateway board. Below figure displaysStandard Mikrobus socket position on Modular Gateway board:

Figure 12. MikroBUS Header

2.13 Volansys’ THREAD ModulesVolansys has developed two very tiny Thread modules using MKW2xD & MKW41Z SoC from NXP. Also, to support MikroBUSstandard one carrier board is developed, which can be used with any of the thread module to fix on MikroBUS headers (J31& J32)

Figure 13. MKW2xD Module with MikroBUS header

2.13.1 MKW2xD moduleVolansys developed ultra-compact sized Thread module using MKW2xD controller from NXP. User can have support ofMKW2xD on Modular Gateway using MikroBUS header compatible module as shown in Figure 12. Initially Modular Gatewaycomes with MKW2xD module attached to provide Thread interface support.

Specification

MikroBus Compatible Headers


MKW2xD supports following features:

• Ultra Compact size of 24x19mm

• 50 MHz 32-bit ARM Cortex M4 MCU with DSP capabilities

• 512 KB Flash & 64 KB SRAM

• Pads are side castellation for easy soldering & optical inspection

Figure 14. MKW2xD Module

2.13.2 MKW41Z module (Optional)Volansys developed very small form factored SMT module using MKW41Z controller. User can have support of MKW41Z onModular Gateway using MikroBUS header compatible module as shown in Figure 12.

MKW41Z supports following features:

• Very Small form factor, SMT module 21mm x 16mm

• Low power mode current: 180nA

• 48 MHz ARM® Cortex™ M0+ MCU

• 512KB Flash memory and 128 KB of SRAM

• Can utilize the premier BLE / ZigBee/ Thread stack

Figure 15. MKW41Z Module

Specification

Volansys’ THREAD Modules


2.14 JTAG Header for MKW2xD ModuleModular Gateway comes with additional JTAG header (J6) to easily debug Volansys’ Thread Modules, which will be connectedon MikroBUS header – J31.

J31 header comes with below additional JTAG signals support:

Table 7. JTAG signal support

Pin# Signal Name

J31.1 TDI

J31.2 TCLK

J31.19 TMS

J31.20 TDO

Pinout of JTAG header J6 shown as below:

Table 8. JTAG Header for MKW2xD

Pin# JTAG signal Pin# JTAG signal

1 VCC_3V3 2 TMS

3 GND 4 TCLK

5 GND 6 TDO

7 NC 8 TDI

9 NC 10 TRST

Figure 16. JTAG Header for MKW2xD

2.15 JN5169 ZigBee ModuleNXP’s ZigBee module have JN5169 wireless controller which was low power supporting for ZigBee interface.

JN5169 module supports following features:

• 2.4GHz IEEE802.15.4 compliant

• 512KB Flash

• 32KB RAM

• Integrated PCB antenna

• Compact size: 30mm x 16mm

Specification

JTAG Header for MKW2xD Module


Figure 17. JN5169 Module

Specification

JN5169 ZigBee Module


Chapter 3Contents of the Modular Gateway Kit

Modular Gateway Kit comes with following listed items:

Table 9. Modular Gateway Kit Content

Item Description

Modular Gateway Unit Comes with External Antenna attached

Power Adapter DC 5V, 3A

Documentation Quick Start Guide

Modular Gateway unit has different peripherals support. Initially it contains following peripherals to support differentfunctionality:

Table 10. Modular Gateway Unit Contents

Item Description

SoM Based on i.MX6UL processor, 200-pin SO-DIMM standardsupported module

Base Board Multiple RF interface support with Volansys’ SoM

NFC Module For commissioning of different modules

KW2xD module Provides Thread interface support

JN5169 module Provides ZigBee interface support

Following items are not standard parts of Modular Gateway Kit. User needs to manage it.

Table 11. Require Preparation Equipment

Item Description

USB Cable USB Cable (micro B to standard A)

Micro SD Card Bootable Linux image

Contents of the Modular Gateway Kit


Chapter 4Acronyms and Abbreviations

The following acronyms are used in this document:

Table 12. Acronyms and abbreviations

Acronym Definition

MCU Microcontroller Unit

U.FL Ultra-Miniature RF Connector

BLE Bluetooth Low Energy

TBD To Be Define

IoT Internet Of Things

SoM Systems On Module

NFC Near Field Communication

eMMC Embedded Multimedia Card

SDRAM Synchronous Dynamic Random Access Memory

PMIC Power Management Integrated Circuits

BT Bluetooth

SoC System on Chip

Acronyms and Abbreviations


Chapter 5References

Table 13. References

Documents Revision

Schematic Design of Volansys’ Base Board 2.0

Schematic Design of Volansys’ SoM 2.0

Datasheet i.MX6UL SOM (IMX6ULCEC) 1.0

Datasheet of MKw2xD 1.0

Datasheet of JN5169 Module 1.1

Quick start Guide of PN7120 NFC Controller Board 1.1

References


Chapter 6Revision History

This table summarizes the changes done to this document since the initial release.

Table 14. Revision history

Revision number Date Substantive changes

0 10/2016 Initial release

Revision History


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