SWRA574B October   2017  – February 2020 AWR1243 , AWR2243

 

  1.   AWR2243 Cascade
    1.     Trademarks
    2. 1 Cascaded AWR2243 System
    3. 2 Synchronization of AWR2243 Chips
      1. 2.1 20 GHz (FMCW) RF LO Sync
      2. 2.2 Digital Frame Sync
        1. 2.2.1 Frame (Burst) and Chirp Timing in AWR2243
        2. 2.2.2 Frame (Burst) and Chirp Timing in a Cascaded System
        3. 2.2.3 Inter Chip Imbalance of Digital Sync Timing
      3. 2.3 40 MHz (System) Reference Clock Synchronization
    4. 3 Connectivity
      1. 3.1 20 GHz LO Sync Pins Connectivity
      2. 3.2 DIG_SYNC Connectivity
      3. 3.3 40 MHz (System) Reference Clock Connectivity
    5. 4 20 GHz LO Sync Link Budget
    6. 5 Software Messaging
      1. 5.1 Configuration of Devices
      2. 5.2 Configuration of Frames
        1. 5.2.1 Similar Configuration Across AWR2243 Devices
        2. 5.2.2 Dissimilar Configuration Across AWR2243 Devices
      3. 5.3 Triggering of Frames
      4. 5.4 Example Usage
      5. 5.5 Other Usages
    7. 6 Advantages of AWR2243 Cascading System
    8. 7 References
  2.   Revision History

3.2 DIG_SYNC Connectivity

The Master chip uses the SYNC_OUT [P11] pin to generate the sync signal. SYNC_OUT feeds into Slaves SYNC_IN [N10]. When more than two chips are cascaded, it is recommended that a clock buffer is used for distribution of SYNC_OUT signal. One of the buffer outputs feeds back into Master chip for delay matching.
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