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

4 Confirming Pin Multiplexing Compatibility

The AM335x device contains many peripheral interfaces. In order to reduce package costs while maintaining maximum functionality, many of the AM335x terminals can multiplex up to eight signal functions. Although there are many combinations of pin-multiplexing that are possible, only a certain number of sets, called I/O sets, are valid due to timing limitations. These valid I/O sets were carefully chosen to provide many possible application scenarios for the user.

Texas Instruments has developed a TI Pinmux tool that helps a system designer select the appropriate pin-multiplexing configuration for their AM335x based product design. This tool provides a way to select valid IO Sets of specific peripheral interfaces to insure the pin-multiplexing configuration selected for a design only uses valid IO Sets supported by AM335x.

The tool can be downloaded from the Pinmux Tool.