Texas Instruments 3138 155 232931 manual RF Data Buffering

CC2420

17RF Data Buffering __________________________________________________________39

17.1Buffered transmit mode _____________________________________________________39

17.2Buffered receive mode _____________________________________________________39

17.3Unbuffered, serial mode ____________________________________________________40

18Address Recognition ________________________________________________________41

19Acknowledge Frames _______________________________________________________41

20Radio control state machine __________________________________________________43

21MAC Security Operations (Encryption and Authentication) _______________________45

21.1Keys____________________________________________________________________45

21.2Nonce / counter ___________________________________________________________45

21.3Stand-alone encryption _____________________________________________________46

21.4In-line security operations ___________________________________________________46

21.5CTR mode encryption / decryption ____________________________________________47

21.6CBC-MAC_______________________________________________________________47

21.7CCM ___________________________________________________________________47

21.8Timing __________________________________________________________________48

22Linear IF and AGC Settings__________________________________________________48

23RSSI / Energy Detection _____________________________________________________48

24Link Quality Indication _____________________________________________________49

25Clear Channel Assessment ___________________________________________________50

26Frequency and Channel Programming _________________________________________50

27VCO and PLL Self-Calibration _______________________________________________51

27.1VCO____________________________________________________________________51

27.2PLL self-calibration________________________________________________________51

28Output Power Programming _________________________________________________51

29Voltage Regulator __________________________________________________________51

30Battery Monitor____________________________________________________________52

31Crystal Oscillator __________________________________________________________53

32Input / Output Matching ____________________________________________________54

33Transmitter Test Modes _____________________________________________________54

33.1Unmodulated carrier _______________________________________________________54

33.2Modulated spectrum _______________________________________________________55

34System Considerations and Guidelines _________________________________________57

34.1Frequency hopping and multi-channel systems___________________________________57

34.2Data burst transmissions ____________________________________________________57

34.3Crystal accuracy and drift ___________________________________________________57

34.4Communication robustness __________________________________________________57

34.5Communication security ____________________________________________________57

34.6Low-cost systems _________________________________________________________58

34.7Battery operated systems ____________________________________________________58

34.8BER / PER measurements ___________________________________________________58

35PCB Layout Recommendations _______________________________________________59

36Antenna Considerations _____________________________________________________59

37Configuration Registers _____________________________________________________61

38Test Output Signals _________________________________________________________81

39Package Description (QLP 48) ________________________________________________83

40Recommended layout for package (QLP 48) ____________________________________84

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