Texas Instruments 3138 155 232931 - Manual (Page 3)

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