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

5 Confirming Electrical and Timing Compatibility

A key step in the hardware design before beginning schematic capture is to confirm both DC and AC electrical compatibility between this device and the other ICs connected to it.

  • The device datasheet has important information with regards to timing and electrical characteristics.
  • For high-speed interfaces, you can run IBIS simulations using IBIS models provided for AM335x ZCE and ZCZ package to confirm signal Integrity. The IBIS model for your chosen AM335x device can be downloaded from the Models section under the Tools & Software tab of the device's product page on ti.com.
  • Using IBIS Models for Timing Analysis

    • NOTE

    TI provides PCB layout specifications for the following interfaces, eliminating the need to perform electrical analysis:

    • LPDDR/DDR2/DDR3 - For more information, see the device-specific data manual (precludes timing analysis).
  • USB - For more information, see the High-Speed Interface Layout Guidelines