ZHCU772 December   2021

 

  1.   说明
  2.   资源
  3.   特性
  4.   应用
  5.   5
  6. 1System Overview
    1. 1.1 Key System Level Specifications
    2. 1.2 System Description
    3. 1.3 Block Diagram
    4. 1.4 Design Considerations
      1. 1.4.1 Frequency Band and Applications
        1. 1.4.1.1 RF Transceiver Synchronization Challenges
        2. 1.4.1.2 JESD204B-Compliant Multichannel Phase Synchronized Clocks Generation
      2. 1.4.2 Clock Jitter and System SNR
      3. 1.4.3 Power-Supply Selection
      4. 1.4.4 Highlighted Products
        1. 1.4.4.1 AFE7950
        2. 1.4.4.2 LMX2820
        3. 1.4.4.3 LMK04832
        4. 1.4.4.4 TPS62913 and TPS62912
        5. 1.4.4.5 LMK1C1104
  7. 2Hardware, Software, Testing Requirements, and Test Results
    1. 2.1 Required Hardware and Software
      1. 2.1.1 Hardware
        1. 2.1.1.1 Clocking Board Setup
        2. 2.1.1.2 FMC-to-FMC Adapter Board Setup
        3. 2.1.1.3 AFE7950EVM Setup
        4. 2.1.1.4 TSW14J56EVM Setup
        5. 2.1.1.5 Hardware Setup of Multiple Transceiver Synchronization
      2. 2.1.2 Software
        1. 2.1.2.1 TIDA-010230 Clocking Board GUI
        2. 2.1.2.2 AFE7950 EVM GUI
        3. 2.1.2.3 High-Speed Data Converter (HSDC) Pro
        4. 2.1.2.4 Programming Steps
        5. 2.1.2.5 Clocking Board Programming Sequence
        6. 2.1.2.6 Latte SW and HSDC Pro Setup
    2. 2.2 Test Setup
    3. 2.3 Test Results
      1. 2.3.1 LMX2820 Phase-Noise Performance
      2. 2.3.2 AFE7950 Transmitter Performance
      3. 2.3.3 AFE7950 Receiver Performance
      4. 2.3.4 Multiple AFE7950s TX and RX Alignment
      5. 2.3.5 Summary and Conclusion
  8. 3Design and Documentation Support
    1. 3.1 Design Files
      1. 3.1.1 Schematics
      2. 3.1.2 BOM
    2. 3.2 Tools and Software
    3. 3.3 Documentation Support
    4. 3.4 支持资源
    5. 3.5 Trademarks
  9. 4About the Author
  10. 5Acknowledgement

2.1.1.3 AFE7950EVM Setup

See the AFE79xxEVM User's Guide for the AFE7950EVM hardware setup procedure.

The AFE7950EVM has both internal PLL as well as external options for clocking the AFE. In external clock mode, feed the external clock signal at the REF_CLK_HIGH (J12) connector and SYSREF at the LMK_CLK_IN (J14) connector of LMK04828 and use in distribution mode, from the clocking board. To enable the external clock signal from the clocking board, move R373, R372 to R370, R371; move R368, R369 to R366, R367; and add 0 Ω at L40, L41.
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