NXP公司的JN5148是超低功耗高性能無線微控制器,具有增強的32位RISC處理器,工作頻率4-32MHz,2.4GHz IEEE802.15.4兼容的收發器,128kB ROM,128kB RAM以及模擬和數字接口.收發器具有128位AES安全處理器, 接收器靈敏度-95dBm,發送功率2.5dBm,500和667kbps數據速率模式,帶包格式化,SRC,地址檢查,定時器的MAC加速器,片內有2.0V到3.6V電源穩壓器,主要用在低功耗無線應用, ZigBee" title="ZigBee">ZigBee PRO和JenNet" title="JenNet">JenNet網絡,智能讀表(AMR),家庭和建筑物自動化,工業系統,遙控, 遙感勘測和玩具與游戲外設等.本文介紹了JN5148主要特性, 方框圖, 無線電, 調制解調器和基帶處理器的架構, 印刷天線參考模塊電路圖以及元器件數值和PCB布局約束值, 用于物聯網的JenNet-IP低功耗無線IP網絡解決方案主要特性與優勢, 通過互聯網智能控的制CFL照明燈應用框圖.

JN5148 Single Chip JenNet, ZigBee PRO and IEEE802.15.4 Solution

The JN5148-001 is an ultra low power, high performance wireless microcontroller targeted at JenNet and ZigBee PRO networking applications. The device features an enhanced 32-bit RISC processor offering high coding efficiency through variable width instructions, a multistage instruction pipeline and low power operation with programmable clock speeds. It also includes a 2.4GHz IEEE802.15.4 compliant transceiver, 128kB of ROM, 128kB of RAM, and a rich mix of analogue and digital peripherals. The large memory footprint allows the device to run both a network stack (e.g. ZigBee PRO) and an embedded application or in a coprocessor mode. The operating current is below 18mA, allowing operation direct from a coin cell.

Enhanced peripherals include low power pulse counters running in sleep mode designed for pulse counting in AMR applications and a unique Time of Flight ranging engine, allowing accurate location services to be implemented on wireless sensor networks. It also includes a 4-wire I2S audio interface, to interface directly to mainstream audio CODECs, as well as conventional MCU peripherals.

JN5148主要特性:

收發器特性:

• 2.4GHz IEEE802.15.4 compliant
• Time of Flight ranging engine
• 128-bit AES security processor
• MAC accelerator with packet formatting, CRCs, address check, auto-acks, timers
• 500 & 667kbps data rate modes
• Integrated sleep oscillator for low power
• On chip power regulation for 2.0V to 3.6V battery operation
• Deep sleep current 100nA
• Sleep current with active sleep timer 1.25μA
• <$0.50 external component cost
• Rx current 17.5mA
• Tx current 15.0mA
• Receiver sensitivity -95dBm
• Transmit power 2.5dBm

微控制器特性:

• Low power 32-bit RISC CPU, 4 to 32MHz clock speed
• Variable instruction width for high coding efficiency
• Multi-stage instruction pipeline
• 128kB ROM and 128kB RAM for bootloaded program code & data
• JTAG debug interface
• 4-input 12-bit ADC, 2 12-bit DACs, 2 comparators
• 3 application timer/counters,
• 2 UARTs
• SPI port with 5 selects
• 2-wire serial interface
• 4-wire digital audio interface
• Watchdog timer
• Low power pulse counters
• Up to 21 DIO

JN5148優勢:

• Single chip integrates transceiver and microcontroller for wireless sensor networks
• Large memory footprint to run ZigBee PRO or JenNet together with an application
• Very low current solution for long battery life
• Highly featured 32-bit RISC CPU for high performance and low power
• System BOM is low in component count and cost
• Extensive user peripherals

JN5148應用:

• Robust and secure low power wireless applications
• ZigBee PRO and JenNet networks
• Smart metering (e.g. AMR)
• Home and commercial building automation
• Location Aware services – e.g. Asset Tracking
• Industrial systems
• Telemetry
• Remote Control
• Toys and gaming peripherals

圖1.JN5148方框圖


圖2.JN5148無線電部分架構

圖3.JN5148調制解調器分架構

圖4.JN5148基帶處理器架構圖

圖5.JN5148印刷天線參考模塊電路圖
JN5148印刷天線參考模塊元器件數值和PCB布局約束值:

用于物聯網的JenNet-IP低功耗無線IP網絡解決方案

JenNet-IP is an IP-based networking solution enabling the „Internet of Things?. Using an enhanced 6LoWPAN network layer as defined by the IETF, it targets ultra low power IEEE802.15.4 based wireless networking for residential and industrial applications. With a “mesh-under” networking approach, it places NXP?s industry proven JenNet network layer at the heart of the platform, to provide a self-healing, highly robust and scalable network backbone, to serve wireless networks with an excess of 500 nodes.

Supported on the JN5148 wireless microcontroller, the solution offers an ultra low power platform for product development. An elegant and extensible user API, SNAP provides a MIB-based approach to device management and control, enabling applications developers to easily and expediently carry out product development using industry familiar methodologies.

通過互聯網智能控制的照明網絡

The following diagram shows a Smartphone controlling a lighting network via the
internet. The Smartphone application sends SNAP commands to lights via IP through
the internet cloud, the home gateway into a wireless IP network. The lights run an
application on a wireless microcontroller to interpret the SNAP commands and
control the light.

圖6.通過互聯網智能控制的照明網絡框圖

JenNet-IP低功耗無線IP網絡主要特性:

? Self-healing and re-shaping tree network
o Proven at network sizes over 500 nodes
o Highly robust
o Easily scalable
? IP-based networking enabling the „Internet of Things?
? Gateway or non-gateway options, supporting
o Connection to the Internet, or
o Standalone operation
? Low power option for low standby applications
? SNAP API
o Easy-to-use
o Elegant
o Extensible
? “Mesh-under” approach allows
o Routing layer optimisation to low power wireless link
o Minimises number of packet buffers
? Highly secure
o 128-bit AES encryption, with
o Secure authentication and device joining
? Over-Network Download, future proofs:
o Device applications
o Network upgrades
? Low memory footprint, less than 128 kbytes
? Low cost of ownership
o Small memory footprint
o Low development complexity
o License-free
o Compliance-free

JenNet-IP低功耗無線IP網絡優勢:

? IP is the foundation of the Internet and globally accepted
? Open standards approach by the IEEE, IEFT communities
? Low Power, low cost, large node networking
? Seamless integration of smart wireless devices with existing IP
? 2.4GHz global solution and coexists with Wi-Fi, Bluetooth.
? Industry familiar APIs and interfaces

JenNet-IP低功耗無線IP網絡應用:

Residential/Smart Home

? A/V RF Remote Control
? Smart Lighting
? Healthcare in the Home
? Security, fire, access control
? Smart Energy

Industrial

? Asset Management
? Commercial/Industrial Lighting
? Building Control
? Environment Monitoring
? Smart Energy

應用案例:CFL照明燈

The electronic components of a light bulb comprise a lamp driver, power supply and a JN5148 wireless microcontroller. The antenna is printed on the PCB and connects directly to the JN5148. The wireless microcontroller has a low power consumption of 15mA in radio transmit and 17.5mA in radio receive, and a few nA in sleep with multi-year battery life.

The bulb application, controlling the bulb and also monitoring its power consumption communicates to remotes or the internet via SNAP and the JenNet-IP 6LoWPAN wireless networking.

圖7. CFL照明燈應用框圖
詳情請見:
http://www.jennic.com/files/product_briefs/JN-DS-JN5148-1v6.pdf
和
http://www.jennic.com/files/product_briefs/JenNet-IP-PBv1.11docx.pdf