CC2520 datasheet(3/133 Pages) TI

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CC2520 DATASHEET

2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER

SWRS068 – DECEMBER 2007

WWW.TI.COM

12.3

Power Up With SRES .................................................................................................... 41

13 Instruction Set ............................................................................................................................ 43

13.1

Definitions ...................................................................................................................... 43

13.2

Instruction Descriptions.................................................................................................. 43

13.3

Instruction Set Summary ................................................................................................ 51

13.4

Status Byte.....................................................................................................................53

13.5

Command Strobes ......................................................................................................... 53

13.6

Command Strobe Buffer ................................................................................................ 53

14 Exceptions ................................................................................................................................. 55

14.1

Exceptions on GPIO Pins............................................................................................... 56

14.2

Predefined Exception Channels..................................................................................... 56

14.3

Binding Exceptions to Instructions (command strobes) ................................................. 57

15 Memory Map .............................................................................................................................. 59

15.1

FREG ............................................................................................................................. 60

15.2

SREG ............................................................................................................................. 60

15.3

TX FIFO .........................................................................................................................60

15.4

RX FIFO .........................................................................................................................60

15.5

MEM............................................................................................................................... 60

15.6

Frame Filtering and Source Matching Memory Map ...................................................... 60

16 Frequency and Channel Programming ...................................................................................... 62

17 IEEE 802.15.4-2006 Modulation Format.................................................................................... 63

18 IEEE 802.15.4-2006 Frame Format........................................................................................... 65

18.1

PHY Layer...................................................................................................................... 65

18.2

MAC Layer ..................................................................................................................... 65

19 Transmit Mode ........................................................................................................................... 67

19.1

TX Control ......................................................................................................................67

19.2

TX State Timing ............................................................................................................. 67

19.3

TX FIFO Access............................................................................................................. 67

19.3.1

Retransmission........................................................................................................... 68

19.3.2

Error Conditions ......................................................................................................... 68

19.4

TX Flow Diagram ........................................................................................................... 69

19.5

Frame Processing .......................................................................................................... 70

19.5.1

Synchronization Header ............................................................................................. 70

19.5.2

Frame Length Field .................................................................................................... 70

19.5.3

Frame Check Sequence............................................................................................. 70

19.6

Exceptions......................................................................................................................71

19.7

Clear Channel Assessment............................................................................................ 71

19.8

Output Power Programming........................................................................................... 71

19.9

Tips And Tricks .............................................................................................................. 72

20 Receive Mode ............................................................................................................................ 73

20.1

RX Control......................................................................................................................73

20.2

RX State Timing ............................................................................................................. 73

20.3

Frame Processing .......................................................................................................... 73

20.3.1

Synchronization Header And Frame Length Fields.................................................... 74

20.3.2

Frame Filtering ........................................................................................................... 74

20.3.3

Source Address Matching .......................................................................................... 77

20.3.4

Frame Check Sequence............................................................................................. 80

20.3.5

Acknowledgement Transmission................................................................................ 81

20.4

RX FIFO Access ............................................................................................................ 82

20.4.1

Using the FIFO and FIFOP Signals............................................................................ 82

20.4.2

Error Conditions ......................................................................................................... 83

20.5

RSSI............................................................................................................................... 83

20.6

Link Quality Indication .................................................................................................... 84

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