SWRA680 November   2020 CC3100 , CC3120 , CC3135 , CC3200 , CC3220R , CC3220S , CC3220SF , CC3235S , CC3235SF

 

  1.   Abstract
  2.   Trademarks
  3. 1Crystal Oscillator Basics
    1. 1.1 Crystal Oscillator Model
  4. 2Crystal Selection
    1. 2.1 Crystal Mode of Operation
    2. 2.2 Temperature Tolerance
    3. 2.3 Aging (Long-Term Stability)
    4. 2.4 Crystal ESR
    5. 2.5 Frequency Accuracy
    6. 2.6 Drive Level
    7. 2.7 Selecting a crystal
      1. 2.7.1 Crystal Specifications
      2. 2.7.2 Recommended Crystals for the CC31xx and CC32xx
  5. 3Crystal Tuning
    1. 3.1 The importance of Crystal Tuning
    2. 3.2 Load Capacitance
    3. 3.3 Crystal Tuning With CL
  6. 4Measuring the ppm Error for the Fast Clock (High Frequency)
    1. 4.1 Setting Up for the CC3x00 Devices
    2. 4.2 Setting Up for the CC3x20 and CC3x35 Devices
    3. 4.3 Measuring ppm Frequency Error
  7. 5PCB Layout Guidelines
    1. 5.1 The 32.768-kHz Crystal (Slow Clock)
    2. 5.2 The 40-MHz Crystal (Fast Clock)
  8. 6References

4.2 Setting Up for the CC3x20 and CC3x35 Devices

In order for Radio Tool to operate correctly, the devices need to be flashed with the correct firmware. For instructions on how to flash firmware onto the device, see the SimpleLink Wi-Fi CC31xx, CC32xx UniFlash User’s Guide [14].

For the CC3x20 and CC3x35 devices, make sure to download and install SimpleLink Wi-Fi radio testing tool for CC31xx and CC32xx. For instructions on the installation process, see the CC3x20, CC3x35 SimpleLink Wi-Fi and Internet-on-a chip Solution Radio Tool [15].

GUID-20200807-CA0I-B1LF-L8JN-JJXD9ZNSFWGQ-low.png Figure 4-2 Setting Up for the CC3x20 and CC3x35 Devices