1. By : Anand Yadav

2. What is Zigbee?  The CC2520 is Texas Instrument’s second generation ZigBee/IEEE 802.15.4 RF transceiver for the 2.4 GHz unlicensed ISM band. This chip enables industrial grade applications by offering state-of-the-art noise immunity, excellent link budget, operation up to 125 degrees and low voltage operation  In addition, the CC2520 provides extensive hardware support for frame handling, data buffering, burst transmissions, data encryption, data authentication, clear channel assessment, link quality indication and frame timing information. These features reduce the load on the host controller. In a typical system, the CC2520 will be used together with a microcontroller and a few additional passive components.  IEEE 802.15.4 protocol.  Zigbee Alliances.

3. Zigbee Description Second generation 2.4 GHz ZigBee®/IEEE 802.15.4 RF transceiver.  Features :  Best-in-class co-existence and selectivity properties  Excellent link budget (103dBm)  Extended temperature range  AES-128 security module  CC2420 interface compatiblility mode  Supports ZigBee-2007 (ZigBee and ZigBee PRO) w/ MSP430  Benefits :  Reliable RF link with interference present  400m line-of-sight range with the development kit  Ideal for industrial applications  No external processor needed for secure  communciation  Easy upgrade for existing CC2420 customers

4. Zigbee consists of  The development kit contains the following components  3 x SmartRF®05EB  3 x CC2520EM evaluation modules  3 x Antennas  2 x CCMSP-EM430F2618  1 x MSP-FET430UIF debug interface  3 x USB cables  Documents

5. Block diagram of Zigbee

6. Working of zigbee ZigBee™ – Mesh Network Devices  ZigBee Coordinator Starts the Network Routes packets Manages security Associates Routers and End Devices Example: Heating Central  ZigBee Router Routes packets Associates Routers and End Devices Example: Light  ZigBee End Device Sleeps most of the time Can be battery powered Does not route Example: Light switch

7. Applications of Zigbee  IEEE 802.15.4 systems  ZigBee® systems  Industrial monitoring and control  Home and building automation  Automatic Meter Reading  Low-power wireless sensor networks  Set-top boxes and remote controls  Consumer electronics