Manuali utente per Texas Instruments 3138 155 232931

Sommario

• Abbreviations

  5
• References

  6
• Features

  7
• Absolute Maximum Ratings

  8
• Operating Conditions

  8
• Electrical Specifications

  9
  • Overall

    9
  • Transmit Section

    9
  • Receive Section

    10
  • RSSI / Carrier Sense

    11
  • IF Section

    11
  • Frequency Synthesizer Section

    11
  • Digital Inputs/Outputs

    12
  • Voltage Regulator

    13
  • Battery Monitor

    13
  • Power Supply

    13
• Pin Assignment

  15
• Circuit Description

  17
• Application Circuit

  19
  • Input / output matching

    19
  • Bias resistor

    19
  • Crystal

    19
  • Voltage regulator

    19
  • Power supply decoupling and filtering

    19
• IEEE 802.15.4 Modulation Format

  24
• Configuration Overview

  25
• Evaluation Software

  26
• 4-wire Serial Configuration and Data Interface

  27
  • Pin configuration

    27
  • Register access

    27
  • Status byte

    28
  • Command strobes

    29
  • RAM access

    29
  • FIFO access

    31
  • Multiple SPI access

    31
• Microcontroller Interface and Pin Description

  32
  • Configuration interface

    32
  • Receive mode

    33
  • RXFIFO overflow

    33
  • Transmit mode

    34
  • General control and status pins

    35
• Demodulator, Symbol Synchroniser and Data Decision

  35
• Frame Format

  36
  • Synchronisation header

    36
  • Length field

    37
  • MAC protocol data unit

    37
  • Frame check sequence

    38
• RF Data Buffering

  39
  • Buffered transmit mode

    39
  • Buffered receive mode

    39
  • Unbuffered, serial mode

    40
• Address Recognition

  41
• Acknowledge Frames

  41
• Radio control state machine

  43
• MAC Security Operations (Encryption and Authentication)

  45
  • Keys

    45
  • Nonce / counter

    45
  • Stand-alone encryption

    46
  • In-line security operations

    46
  • CTR mode encryption / decryption

    47
  • CBC-MAC

    47
  • CCM

    47
  • Timing

    48
• Linear IF and AGC Settings

  48
• RSSI / Energy Detection

  48
• Link Quality Indication

  49
• Clear Channel Assessment

  50
• Frequency and Channel Programming

  50
• VCO and PLL Self-Calibration

  51
  • VCO

    51
  • PLL self-calibration

    51
• Output Power Programming

  51
• Voltage Regulator

  51
• Battery Monitor

  52
• Crystal Oscillator

  53
• Input / Output Matching

  54
• Transmitter Test Modes

  54
  • Unmodulated carrier

    54
  • Modulated spectrum

    55
• System Considerations and Guidelines

  57
  • Frequency hopping and multi-channel systems

    57
  • Data burst transmissions

    57
  • Crystal accuracy and drift

    57
  • Communication robustness

    57
  • Communication security

    57
  • Low-cost systems

    58
  • Battery operated systems

    58
  • BER / PER measurements

    58
• PCB Layout Recommendations

  59
• Antenna Considerations

  59
• Configuration Registers

  61
• Test Output Signals

  81
• Package Description (QLP 48)

  83
• Recommended layout for package (QLP 48)

  84
  • Package thermal properties

    84
  • Soldering information

    84
  • Plastic tube specification

    85
  • Carrier tape and reel specification

    85
• Ordering Information

  85
• General Information

  86
  • Document History

    86
  • Product Status Definitions

    87
• Address Information

  88
• TI Worldwide Technical Support

  88