Freescale 公司的TWR-WIFI-G1011MI 模塊是802.11b Wi-Fi解決方案，采用GainSpan公司的超低功耗的無線芯片GS1011，集成了802.11 無線電, MAC和基帶，以及PA, 應(yīng)用CPU, RTC, SRAM 與閃存。支持IEEE 802.11，具有802.11i/WPA2身份驗(yàn)證, AES 硬件加密。GS1011應(yīng)用在保健設(shè)備，智能電網(wǎng)，工業(yè)控制和監(jiān)視，商業(yè)/建筑物自動化以及消費(fèi)類電子。本文介紹了GS1011主要特性和優(yōu)勢，方框圖以及GainSpan Wi-Fi Tower 模塊 (TWR-WIFI-G1011MI)主要特性，方框圖和電路圖。
GS1011：Ultra Low-Power Wireless Single Chip
GS1011 device is a highly integrated ultra low power wireless single chip which contains an 802.11 radio, media access controller (MAC) and baseband processor, on-chip flash memory and SRAM, and an applications processor all on a single package. The GS1011 supports the full 802.11b (11Mbps) data rates providing scalability on data throughput for higher bandwidth application while still providing the ultra low power consumption for years of battery life. The GS1011 is pin and package compatible with the GS1010 enabling seamless hardware upgrade for current designs. Along with its embedded software stack it offers a highly scalable, reliable, manageable and secure wireless link to meet the growing demand of wireless sensor networks utilizing the broadly accepted IEEE 802.11 standards infrastructure. This solution is ideal for use in smart energy, building automation, industrial and commercial automation and cold storage monitoring applications. In addition, the solution provides capabilities such as location awareness which also make it well suited for logistics and supply chain applications for tracking asset
location and status.
GS1011主要特性和優(yōu)勢：
• Highly Integrated wireless SOC with 802.11 radio, MAC and Baseband,Integrated PA, Application CPU, RTC, SRAM and FLASH
− Reduces system cost of implementing separate devices and lowers design complexity
− Ultra small form-factor reduces board space
• Supports IEEE 802.11
− Lowers customer’s total cost of ownership (TCO) in network implementation and management
− Seamlessly integrates with existing 802.11b/g infrastructure and utilizes the 802.11 security, manageability, easeof-use, and quality of service
− Supports full 802.11b data rates (up to 11 Mbps) for higher bandwidth applications
• 802.11i/WPA2 Authentication, AES Hardware encryption
− Enterprise level security &reliability for sensor networks
• Power Management
− Optimized for battery powered application with very low power consumption for multiple years of battery life
• Location Awareness
− Enables users to trace and monitor assets
• Multiple I/O: SPI, UART, PWM, I2C, ADC, GPIO
− Provides flexibility in system design for easier integration
• Firmware, Device drivers, Reference Application SW, APIs, and SDK
− Reduces customer development time for application software enabling faster time to market
• Seamless HW upgrade to current designs
− Pin and package compatible with GS1010, makes it drop in replacement onto current
GS1010 designs
GS1011應(yīng)用：
• Healthcare
• Smart Energy
• Industrial Control and Monitoring
• Commercial/Building Automation
• Consumer
圖1。GS1011方框圖
GainSpan Wi-Fi Tower 模塊 (TWR-WIFI-G1011MI)主要特性：
The GainSpan Wi-Fi Tower Module (TWR-WIFI-G1011MI) is a low-cost evaluation, demonstration and development board that features an 802.11b solution from GainSpan. The following list summarizes the features of the TWR-WIFI-G1011MI:
GainSpan GS1011MIP Wi-Fi module
Compliant to 802.11b and operates with standard 802.11 b/g/n access points at speeds up to 11 Mbps
Supports Infrastructure or Adhoc mode
UART and SPI interfaces
Up to 3 MHz in SPI Slave Mode
Up to 921.6 kbps baud rate on UART
Full Wi-Fi stack including WPS and optional networking stack and services
802.11i Security
WEP, WPA, WPA2-PSK, Enterprise
Embedded Web Server for Provisioning
Certified RF Module: FCC/IC, ETSI, RoHS, Compliant with JAPAN regulatory
GS1011MIP module is a highly integrated ultra low power Wi-Fi module that contains the following:
GainSpan’s GS1011 Wireless SoC, which contains media access controller (MAC), baseband processor, on-chip flash memory and SRAM, and a network processor in a single package.
Built in certified PCB trace antenna or external Antenna Options and onboard 32 KHz & 44 MHz crystal circuitries.
The GS1011MIP has a capability of +8 dBm (typical) output power at the antenna Module includes a variety of I/O interfaces:
Two UART with optional hardware flow control support
Two SPI block with Master or Slave Operation
I2C with Master or slave operation
Two low-power 10-bit ADC capable of running at up to 32 Ksamples/Sec.
GPIO’s, and LED Drivers/GPIO with 20mA capabilities, JTAG
圖2。TWR-WIFI-G1011MI方框圖
The TWR-WIFI-G1011MI module connects to the Freescale Tower platform using the SPI or UART interface and uses the TCP/IP stack of the Freescale MQX system. The module firmware supports basic AT command set and the MQX driver for the GS1011MIP communicate using these AT command sets. By default the SPI interface is used.
The TWR-WIFI-G1011MI peripheral module enables easy-to-use 802.11b Wi-Fi connectivity for your application development using the Tower System. This FCC-certified module comes with complimentary MQX software and enables you to quickly go from the lab to production with the same Wi-Fi hardware.
The on-board GS1011MIP Wi-Fi module from GainSpan features a highly integrated wireless SOC with 802.11 radio, MAC and Baseband, Integrated PA, Application CPU, RTC, SRAM and FLASH.
TWR-WIFI-G1011MI Module Features:
GS1011MIP Wi-Fi module from GainSpan
Operates with standard 802.11 b/g/n access points at speeds up to 11 Mbps
Infrastructure or Adhoc mode
UART and SPI interfaces
Up to 3 Mbps in SPI Slave Mode
Up to 921.6 kbps on UART
Full Wi-Fi stack including WPS and optional networking stack and services
802.11i Security
WEP, WPA, WPA2-PSK, Enterprise
Certified RF Module: Wi-Fi, FCC, IC, Japan, ETSI, RoHS
圖3。TWR-WIFI-G1011MI外形圖
圖4。TWR-WIFI-G1011MI方框圖
圖5。TWR-WIFI-G1011MI電路圖（1）
圖6。TWR-WIFI-G1011MI電路圖（2） |
