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FreescaleTWR-RF-SNAP無線網(wǎng)狀網(wǎng)絡解決方案

2012-04-12
作者:Freescale公司
</a>RF" title="RF">RF" title="RF">RF-SNAP無線網(wǎng)狀網(wǎng)絡解決方案是采用Synapse公司基于Freescale的MC13224V收發(fā)器平臺的SM700 RF引擎.這種無線網(wǎng)絡模塊采用帶大容量片上存儲器的ARM7 32位處理器,并集成了12位ADC,工作頻率2400 - 2483.5MHz,輸出功率高達100mW,16個RF通路,戶外LOS距離達1.5英里,而TWR-RF-SNAP無線網(wǎng)狀網(wǎng)絡模塊可單獨使用,也可和Tower System一起使用.本文介紹了Synapse公司的SM700 RF引擎主要特性和指標,方框圖以及RF無線網(wǎng)狀網(wǎng)絡模塊TWR-RF-SNAP主要特性,方框圖和電路圖.

Synapse raises the bar on integrated performance with its SM700 RF Engine® based on the Freescale™ MC13224V transceiver platform. This wireless network module uses an ARM7 32-bit processor with large on-chip memory and integrated 12-bit ADCs.

And like all RF Engines from Synapse, the Model SM700 comes with SNAP® already loaded and ready to perform right out of the box. SNAP is Synapse’s award-winning, mesh network operating system that provides wireless connectivity for Internet-to-machine and machine-to-machine communications.

With 96K RAM of memory, large applications can bring intelligence to the very edge of the network for local operations. These applications can be uploaded over-the-air… even mesh hopping across the network to reach its destination. And because of the large memory in the SM700, the core SNAP operating system can also be upgraded over-the-air and leaves your network in place and intact.

Very little board space is needed for this RF Engine (25mm x 36mm). Even the antenna is integrated to further reduce system size and cost. What comes in a small package however is big on capabilities. The SM700 can achieve a range of over 1.5 miles and deliver an output of up to +20dBm. For applications requiring battery power, the Model SM700 can perform at power consumption levels as low as 12 μA.

SM700 RF引擎主要特性:

Powerful 32-bit TDMI ARM7 microprocessor

2.4 GHz RF Frequency (2400 - 2483.5MHz)

Up to 100mW output power

16 RF Channels

Small footprint: 1” x 1.4” (25.4mm x 36.5mm)

Integrated F-antenna

Over 1.5 miles range

AES 128-bit encryption

FCC, CE and IC certified   Accurate 12-bit ADC for precision sensors

Large on-board memory resources

-96 dBm Rx sensitivity

+20dBm Tx output power

2.0 to 3.6 Volts Vcc

Low power consumption:

Transmit mode……193 mA

Receive mode………30 mA

Hibernate mode……1.1 µA

Operating temperature: -40℃ to +85℃

Small surface-mount IC footprint

SM700 RF引擎指標:


圖1. SM700 RF引擎方框圖

RF無線網(wǎng)狀網(wǎng)絡模塊TWR-RF-SNAP

The Wireless Mesh Networking Tower Board (TWR-RF-SNAP) is a peripheral Tower System Module. The TWR-RF-SNAP provides wireless mesh networking via the FCC Certified Synapse Wireless SM700 RF Engine. The SM700 is based on the Freescale MC13224 chip which combines a 32-bit ARM7 MCU with an IEEE 802.15.4 radio transceiver.

The TWR-RF-SNAP module can function standalone or within the Tower System. As part of the Tower System, the TWR-RF-SNAP can interface with Tower System controller modules via SPI and can access available Tower System peripheral modules using UART or I2C. The TWR-RF-SNAP also includes a General Purpose Tower Plug-in (TWRPI) socket allowing direct access to a selection of sensor plug-ins via I2C.

A SN132 USB Dongle is also included with the TWR-RF-SNAP. The USB Dongle features the RF100 RF Engine based on a Freescale MC9S08 MCU and the Freescale MC13191 radio. The USB dongle provides a communication portal to a host computer via USB.

The TWR-RF-SNAP can be accessed in Synapse’s Portal IDE using either the on-board USB or wirelessly using the included RF100 USB Dongle.

RF無線網(wǎng)狀網(wǎng)絡模塊TWR-RF-SNAP主要特性:

Features the SM700 802.15.4 RF Engine from Synapse Wireless, based on the Freescale MC13224 module

Pre-loaded with SNAP Network Operating System

Push button inputs and user controlled LEDs

On-board low-power linear active thermistor and light sensor

On-board TWRPI connector for the addition of standard Freescale TWRPI modules

Configurable access to Tower Elevator connector allows for interaction with other Tower modules (UART, SPI and I2C)

MicroUSB connector provides power and serial connectivity

Multiple powering options

Access to additional GPIOs on SM700 via header bloc

圖2.TWR-RF-SNAP方框圖

圖3.TWR-RF-SNAP模塊外形圖

圖4.TWR-RF-SNAP模塊電路圖(1)

圖5.TWR-RF-SNAP模塊電路圖(2)

圖6.TWR-RF-SNAP模塊電路圖(3)

圖7.TWR-RF-SNAP模塊電路圖(4)
詳情請見:
http://cache.freescale.com/files/32bit/doc/user_guide/TWR_RF_SNAP_UM.pdf?fpsp=1&WT_TYPE=Users%20Guides&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation

http://cache.freescale.com/files/32bit/hardware_tools/schematics/TWR_RF_SNAP_SCH.pdf?fpsp=1
以及
http://www.synapse-wireless.com/documents/products/Synapse-SM700xx-Engine-Data-Sheet.pdf



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