TI CC2431 SOC ZigBee 解决方案 关键词:无线通信,无线宽带,ZigBee, SOC, IEEE 802.15.4 摘要:TI 的 CC2431 是无线传感器网络 ZigBee®/IEEE 802.15.4 解决方案的真正的片上系统

(SOC).芯片包括定位检测硬件模块,能用在称作盲节点(即不知道位置的节点),用以接收从已

知节点位置发送的信号.根据该信号,本地引擎就能计算出盲节点的大概位置.CC2431 使得

建立一个 ZigBee 节点所需的材料清单(BOM)非常低.CC2431 把 CC2420 RF 收发器的一流

性能和工业标准的 8051 MCU,128KB 闪存,8KB RAM 和许多功能强大的特性组合在一

起.CC2431 是最具竞争力的 ZigBee 解决方案.解决方案介绍了 CC2431 的主要性能和应用

领域.此外,还包括开发套件 CC2431DK 以及应用案例.同时还给出了详细的电路图. TI 的 CC2431 是无线传感器网络 ZigBee®/IEEE 802.15.4 解决方案的真正的片上系统

(SOC).芯片包括定位检测硬件模块,能用在称作盲节点(即不知道位置的节点),用以接收从已

知节点位置发送的信号.根据该信号,本地引擎就能计算出盲节点的大概位置.CC2431 使得

建立一个 ZigBee 节点所需的材料清单(BOM)非常低.CC2431 把 CC2420 RF 收发器的一流

性能和工业标准的 8051 MCU,128KB 闪存,8KB RAM 和许多功能强大的特性组合在一

起.CC2431 是最具竞争力的 ZigBee 解决方案. 解决方案介绍了 CC2431 的主要性能和应用领域.此外,还包括开发套件 CC2431DK 以及应

用案例.同时还给出了详细的电路图. The CC2431 is a true System-On-Chip (SOC) for wireless sensor networking ZigBee®/IEEE 802.15.4 solutions. The chip includes a location detection hardware module that can be used in so-called blind nodes (i.e. nodes with unknown location) to receive signals from nodes with known location’s. Based on this the location engine calculates an estimate of a blind node’s position. The CC2431 enables ZigBee® nodes to be built with very low total bill-of-material costs. The CC2431 combines the excellent performance of the leading CC2420 RF transceiver with an industry-standard enhanced 8051 MCU, 128 KB flash memory, 8 KB RAM and many other powerful features. Combined with the industry leading ZigBee® protocol stack (Z-Stack™) from Texas Instruments, the CC2431 provides the market’s most competitive ZigBee® solution. The CC2431 is highly suited for systems where ultra low power consumption is required. This is achieved by various operating modes. Short transition times between these modes further ensure low power consumption. 主要特性: • Location Engine calculates the location of a node in a network • High performance and low power 8051 microcontroller core. • 2.4 GHz IEEE 802.15.4 compliant RF transceiver (industry leading CC2420 radio core). • ZigBee® protocol stack (Z-Stack™) from Texas Instruments includes support for CC2431 ‘s location engine. • Excellent receiver sensitivity and robustness to interferers • 128 KB in-system programmable flash • 8 KB RAM, 4 KB with data retention in all power modes • Powerful DMA functionality • Very few external components • Only a single crystal needed for mesh network systems

• Low current consumption (RX: 27 mA, TX: 27 mA, microcontroller running at 32 MHz) • Only 0.5μA current consumption in powerdown mode, where external interrupts or the RTC can wake up the system • 0.3 μA current consumption in power-down mode, where external interrupts can wake up the system • Very fast transition times from low-power modes to active mode enables ultra low average power consumption in low duty-cycle systems • CSMA/CA hardware support • Wide supply voltage range (2.0 V – 3.6 V) • Digital RSSI/ LQI support • Battery monitor and temperature sensor • ADC with up to eight inputs and configurable resolution • 128-bit AES security coprocessor Two powerful USARTs with support for several serial protocols. • Hardware debug support • Watchdog timer • One IEEE 802.15.4 MAC Timer, one general 16-bit timer and two 8-bit timers • RoHS compliant 7x7 mm QLP48 package • 21 general I/O pins, two with 20 mA sink/source capability • Powerful and flexible development tools available CC2431的应用: • ZigBee® systems • 2.4 GHz IEEE 802.15.4 systems • Home/building automation • Industrial Control and Monitoring • Low power wireless sensor networks • Access Control • PC peripherals • Set-top boxes and remote controls • Consumer Electronics • Container/Vehicle Tracking • Active RFID • Inventory Control 下图为CC2431的方框图:

CC2431 的详细性能请见数据表: http://focus.ti.com/lit/ds/symlink/cc2431.pdf

The CC2431DK Development Kit includes a sample application for location calculation and demonstration.

Evaluate the SmartRF®04 products. Apply power to the boards and the plug and play kit can be used for range testing.

User SmartRF® Studio to perform RF measurements. The radio can be easily configured to measure sensitivity, output power, and other RF parameters.

Prototype development. The CC2431DK includes a USB interface that can be used as emulator interface for the CC2430/CC2431. All I/O ports are available on pin connectors on the edge of the board to allow easy access for external applications.

Features

A complete CC2431DK development kit contains the following:

2 x SmartRF®04EB 10 x SoC_BB 2 x evaluation modules CC2430EM 10 x evaluation modules CC2431EM 12 x 2.4 GHz antennas 2 x USB cables 1 x 10-wire flat cable for using SmartRF®04EB as emulator for external target

systems Quick start guide User's manual IAR EW8051 C-compiler with C-SPY debugger (30+30 days evaluation license)

The CC2431DK is supported by the IAR EW8051 C-compiler, which is used with the MAC and application examples. The C-SPY debugger is used as emulator interface. Both the C-compiler and the C-SPY debugger are included in the development kit as 30-days evaluation licenses. By registrering the compiler with IAR, a 30-day extension of the license will be given.

SOC_BB (Battery Board) 的电路图见下图:

以上详情请见:http://focus.ti.com/lit/ug/swru076d/swru076d.pdf The CC2431EM is equal to the CC2430EM except for the CC2430/CC2431 chip. The complete reference design for the CC2430EM can be downloaded from the CC2430 product web site. SmartRF04EB硬件描述和电路图:

SmartRF04EB电路图:第一页

SmartRF04EB电路图:第二页

SmartRF04EB电路图:第三页

SmartRF04EB电路图:第四页

SmartRF04EB电路图:第五页

SmartRF04EB电路图:第六页

SmartRF04EB电路图:第七页

更加详细资料,请参阅: http://focus.ti.com/lit/ug/swru039b/swru039b.pdf