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LSResearchTiWi-SL2.4GHzWLAN解決方案

2012-02-21
作者:LS Research公司

LS Research公司的TiWi-SL是高性能2.4 GHz 802.11 b/g WLAN模塊,包括了必需的PHY,MAC和支持WLAN應用的網絡層.模塊和IEEE 802.11 b/g兼容,WLAN發送功率+19.0dBm或+15dBm,WLAN靈敏度為-85dBm或-70dBm,工作電壓2.9V- 3.6V.主要用在HVAC控制,智能電網,傳感器網絡,醫療,家庭自動化和監測.本文介紹了TiWi-SL模塊主要特性, 模塊方框圖,評估板電路圖和材料清單以及片狀天線和雙極天線指標與相應的參考設計電路.

The TiWi-SL is a high performance 2.4 GHz WLAN module that contains an IP networking stack in a pre-certified footprint.

The module includes the necessary PHY, MAC, and network layers to support WLAN applications through a simple SPI connection to host microcontrollers or other embedded processors.

Need to get to market quickly? Not an expert in 802.11. Need a custom antenna? Would you like to own the design? Would you like a custom design? Not quite sure what you need? Do you need help with your host board? LS Research Design Services will be happy to develop custom hardware or software, or assist with integrating the design.

TiWi-SL模塊主要特性:

• IEEE 802.11 b/g compliant.

• Typical WLAN Transmit Power: o +19.0 dBm, 11 Mbps, CCK (b)

o +15 dBm, 54 Mbps, OFDM (g)

• Typical WLAN Sensitivity: o - 85 dBm, 8% PER,11 Mbps

o -70 dBm, 10% PER, 54 Mbps

• Miniature footprint: 14 mm x 21 mm

• Low height profile: 2.3 mm

• Operating Voltage: 2.9V to 3.6V

• Operating temperature: -40 to +85o C

• Embedded network stack

• Wireless Security WEP, WPA Personal, WPA2 Personal

• Terminal for PCB/Chip antenna feeds

• Compact design based on Texas Instruments CC3000 transceiver

• SPI host interface

• Simple integration with microcontrollers and microprocessors

• Worldwide acceptance: FCC (USA), IC (Canada), and ETSI (Europe)

• RoHS compliant

• Streamlined development with LSR design services

TiWi-SL模塊應用:

• HVAC Control, Smart Energy

• Sensor Networks

• Medical

• Home Automation

• Home Monitoring

圖1.TiWi-SL模塊方框圖

TiWi-SL模塊主要特性:

WLAN特性:

• IEEE802.11b/g compliant WLAN MAC Baseband Processor and RF transceiver

• IEEE Std 802.11d,i PICS compliant

• Supports serial debug interface

• Supports Serial Peripheral Interface (SPI) Host Interface

• Media Access Controller (MAC)

o Embedded ARM™ Central Processing Unit (CPU)

o Hardware-Based Encryption/Decryption Using 64-, 128-Bit WEP, TKIP or AES Keys,

o Supports requirements for Wireless Fidelity (Wi-Fi) Protected Access (WPA and WPA2.0) and IEEE

o Std 802.11i [Includes Hardware-Accelerated Advanced-Encryption Standard (AES)]

• Baseband Processor

• 2.4GHz Radio

o Digital Radio Processor (DRP) implementation

o Internal LNA

o Supports : IEEE Std 802.11b, 802.11g, 802.11b/g

Network Stack Supported Protocols

• Transport layer:

o TCP

o UDP

• Network layer:

o IPv4

o Ping

o DHCP

o DNS Client

• Link layer:

o ARP

無線安全系統特性:

• Supported modes:

o Open (no security)

o WEP

o WPA-personal

o WPA2-personal

• Supported encryption types:

o WEP

o TKIP

o AES

o Open

The purpose of this document is to provide details regarding the setup and use of the TiWi-SL module on an EM board. This document covers a description of the EM board and its features and a brief tutorial on how to operate the module EM board.

The TiWi-SL EM “Evaluation Module” Board is an evaluation platform for the LS Research TiWi-SL 802.11 b/g Wi-Fi module. Communication between the TiWi-SL module, which is a slave, and the host device is through an SPI interface.

The TiWi-SL EM Board contains an on board chip antenna, and is intended for evaluation purposes when used in conjunction with the Texas Instruments MSP-EXP430FR5739 Experimenter Board.

圖2.實驗板和TiWi-SL EM板外形圖

圖3.TiWi-SL EM板電路圖

TiWi-SL EM板材料清單(BOM):

TIWI-SL天線設計指南

The purpose of this document is to provide details regarding the design and integration of certified antennas to the TiWi-SL module. It covers both a PCB mounted chip antenna as well as an externally mounted dipole antenna. It will inform the designer as to the required PCB layout details, and provide expected performance specifications.

片狀天線指標:



圖4.片狀天線參考設計電路圖

The LSR 001-0001 Dipole Antenna is used in conjunction with the LSR 080-0001 U.FL to Reverse Polarity SMA Cable, and the Hirose PCB mounted U.FL connector, to provide an externally mounted antenna solution for the LSR TiWi-SL Radio module.

雙極天線指標:


圖5.雙極天線參考設計電路圖
詳情請見:
http://www.lsr.com/downloads/tiwi_sl/TiWi_SL_EM_Board_User_Guide.pdf

http://www.lsr.com/downloads/tiwi_sl/TiWi_SL_Datasheet.pdf
以及
http://www.lsr.com/downloads/tiwi_sl/TiWi_SL_Antenna_Design_Guide.pdf



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