SPRABU5 May   2019 AM3351 , AM3352 , AM3354 , AM3356 , AM3357 , AM3358 , AM3358-EP , AM3359

 

  1.   AM335x Hardware Design Guide
    1.     Trademarks
    2. 1  Introduction
    3. 2  Constructing the Block Diagram
    4. 3  Selecting the Boot Mode
    5. 4  Confirming Pin Multiplexing Compatibility
    6. 5  Confirming Electrical and Timing Compatibility
    7. 6  Designing the Power Subsystem
    8. 7  Designing the Clocking Subsystem
    9. 8  PCB Floorplan
    10. 9  Creating the Schematics
    11. 10 Laying Out the PCB
    12. 11 Board Bringup/Diagnostic
    13. 12 Refereces

7 Designing the Clocking Subsystem

In addition to the power subsystem, the clocking subsystem needs to be designed to provide appropriate clocks to all ICs in the system. These clocks can be created by pairing crystals with internal oscillators within the system ICs, or they can be created by a separate clock generator. For your design, see the information below on designing the clocking subsystem.

  • Key Considerations
    • The device operation requires a 32k optional crystal and HF crystal with either 19.2,24,25,26 MHz reference clock for operation.
    • A 32.768-kHz clock input is an optional for the RTC.
    • For more details, see the Clocking sections of the device-specific data sheet and TRM.