The NXP Internet (IOT) gateway is an important part of the wired network that connects devices with everyday wireless capabilities, and they can be controlled and monitored. Based on the host controller running OpenWrt ARM9 Linux operating system, it provides an easy to use platform system development. Its software design is modular, allowing for easy customization, including application change software. The wireless interface can participate in ZigBee or JenNeTIP networks. With the addition of a wireless USB adapter, the gateway can participate in a hybrid network. Data encryption uses standard Internet technology and 128-bit AES-encrypted wireless communication technology on the wired interface. This IoT gateway is an Ethernet gateway that is closely related to low-power wireless networks. It is based on the IEEE 802.15.4 standard and is compatible with ZigBee and JenNet-IP smart gateways.
1. Functional block diagram
2. Important features
2.1 ARM926EJ-S processor, CPU clock running rate up to 266MHz
The LPC3240 has a CPU operating frequency of up to 266 MHz. The NXP implementation uses an ARM926EJ-S CPU with a Harvard architecture, a 5-stage pipeline and a complete memory management unit (MMU). The LPC3240 also includes 256 kB of on-chip static RAM, a NAND flash interface, an Ethernet MAC, an external bus interface that supports SDR and DDR SDRAM, and other static devices. In addition, the LPC3240 includes a USB 2.0 full-speed interface, 7 UARTs, 2 I2C bus interfaces, 2 SPI/SSP ports, 2 I2S bus interfaces, 2 single output PWMs, 1 motor controlled PWM, 6 with capture inputs and Compare the output's general purpose timer, an SD interface, and a 10-bit analog-to-digital converter (ADC) with touch screen detection options.
Details: NXP LPC3240
2.2 Wireless Zigbee Communication Using NXP JN5168 Chip
The JN5168 is an ultra-low power, high performance wireless microcontroller supporting JenNet-IP, ZigBee Smart Energy, ZigBee Light Link, RF4CE and IEEE802.15.4 network protocol stacks for Smart Energy, Home AutomaTIon, Smart LighTIng, remote or wireless Sensor application. The device features an enhanced 32-bit RISC processor with 256 kB of embedded Flash, 32 kB of RAM and 4 kB of EEPROM memory for high encoding efficiency with variable-width instructions; a multi-level instruction pipeline with programmable clock rates Low power operation. The device also integrates a 2.4 GHz IEEE802.15.4 compatible transceiver with a variety of analog and digital peripherals. Achieve excellent battery life with state-of-the-art 15 mA operating current and 0.6 μA sleep timer mode, allowing direct power from a single button cell.
Details: NXP JN5168 Wireless Microcontroller
2.3 Using TI DP83848K 10/100M Ethernet Transceiver
The DP83848 10/100 Mb/s single physical layer device provides low power performance with an intelligent power-off state-energy detection mode.
Details: TI DP83848
3. Product advantages
JN5168 ZigBee / JenNet-IP wireless interface
ZigBee optical link, ZigBee Home Automation and JenNet-IP provide a single application layer
Custom software enables hybrid ZigBee home automation / ZigBee wireless optical link network
MIB-based JIP application layer
Mirroring system for Linux operating system
Programmable custom application
Support for standard network security, including TLS
Support local web server
NXP LPC 3240 ARM9 Host Controller
1 GB flash
512 KB SRA
256 KB EEPROM
7-16 V DC power input
Ethernet RJ45 port
USB port supports WiFi adapter or additional network layer
CE and FCC certification
Customizable LED and button functions
RP-SMA connector and external antenna
4. Application area
Network control of ZigBee network
Network control of JenNet-IP network
Connected Ethernet Gateway/Protocol
Intelligent building communication and control
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