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CC2420ZDK Datasheet(PDF) 3 Page - Texas Instruments |
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CC2420ZDK Datasheet(HTML) 3 Page - Texas Instruments |
3 / 92 page CC2420 SWRS041B Page 3 of 89 17 RF Data Buffering __________________________________________________________39 17.1 Buffered transmit mode _____________________________________________________39 17.2 Buffered receive mode _____________________________________________________39 17.3 Unbuffered, serial mode ____________________________________________________40 18 Address Recognition ________________________________________________________41 19 Acknowledge Frames _______________________________________________________41 20 Radio control state machine __________________________________________________43 21 MAC Security Operations (Encryption and Authentication) _______________________45 21.1 Keys____________________________________________________________________45 21.2 Nonce / counter ___________________________________________________________45 21.3 Stand-alone encryption _____________________________________________________46 21.4 In-line security operations ___________________________________________________46 21.5 CTR mode encryption / decryption ____________________________________________47 21.6 CBC-MAC_______________________________________________________________47 21.7 CCM ___________________________________________________________________47 21.8 Timing __________________________________________________________________48 22 Linear IF and AGC Settings__________________________________________________48 23 RSSI / Energy Detection _____________________________________________________48 24 Link Quality Indication _____________________________________________________49 25 Clear Channel Assessment ___________________________________________________50 26 Frequency and Channel Programming _________________________________________50 27 VCO and PLL Self-Calibration _______________________________________________51 27.1 VCO____________________________________________________________________51 27.2 PLL self-calibration________________________________________________________51 28 Output Power Programming _________________________________________________51 29 Voltage Regulator __________________________________________________________51 30 Battery Monitor ____________________________________________________________52 31 Crystal Oscillator __________________________________________________________53 32 Input / Output Matching ____________________________________________________54 33 Transmitter Test Modes _____________________________________________________54 33.1 Unmodulated carrier _______________________________________________________54 33.2 Modulated spectrum _______________________________________________________55 34 System Considerations and Guidelines _________________________________________57 34.1 Frequency hopping and multi-channel systems___________________________________57 34.2 Data burst transmissions ____________________________________________________57 34.3 Crystal accuracy and drift ___________________________________________________57 34.4 Communication robustness __________________________________________________57 34.5 Communication security ____________________________________________________57 34.6 Low-cost systems _________________________________________________________58 34.7 Battery operated systems ____________________________________________________58 34.8 BER / PER measurements ___________________________________________________58 35 PCB Layout Recommendations _______________________________________________59 36 Antenna Considerations _____________________________________________________59 37 Configuration Registers _____________________________________________________61 38 Test Output Signals _________________________________________________________81 39 Package Description (QLP 48) ________________________________________________83 40 Recommended layout for package (QLP 48) ____________________________________84 |
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