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TMDXSK437X: Design questions

Part Number: TMDXSK437X
Other Parts Discussed in Thread: TMDSEVM437X, PROFIBUS

What is the difference between TMDSEVM437X (evaluation kit) and TMDXSK437X (starter kit)? If we have to base our PCB design on AM437x should we refer to the EVM or the SK for quickest turn around time? Both kits have their schematics and layout files available, though the EVM seems complex in architecture. Also, is the Linux kernel stable and would it be possible to build an Android BSP similar to AM335x designs?

  • Hi,

    There is one major difference between the two designs - the Starter Kit uses balanced-T topology for the DDR3 layout, which at this time is not yet recommended for end-user designs. The GP EVM uses the recommended fly-by DDR3 topology. As for complexity, you can simply remove the peripherals you don't need.

    Android is not supported by TI for AM437x devices. You may find Android BSP's through third-party providers.
  • Dear Biser,

    Thank you for your prompt response.
    For AM437x/AM335x designs would it be possible to modify the ethernet interface to power over Ethernet (PoE) and also include a dual-band Wi-Fi module, hoping it won't affect the frequency response and track impedances and overall electromagnetic characteristics of the design?
    If it would affect the electrical and electromagnetic response, then is there a guidance document which we can refer to eliminate design time errors?
    I understand AM437x has a Fieldbus transceiver on board, so we can design CANbus/Profibus/Modbus interfaces and include these in the design.
    Due to the audio/video and communications nature of our design and focus on the consumer market, we may have to support Android platforms. I could find Android board support and/or SDK for AM335x and AM57xx devices from TI and no direct support for AM437x. I hope in principle Andriod BSP for versions 5 or higher can be developed for AM437x and yes, there are a few third-party solutions.
  • The Ethernet interface is on EMAC level and supports MII/RMII/RGMII connections to the PHY. I'm not sure that PoE can provide sufficient power to supply the entire board, but I am not an expert on this. There may be interface issues too, as AM437x I/O pins are not fail-safe and no voltage should be applied to them before all power supplies have fully ramped up and stabilized.

    As for Android support, TI supports Android only on AM57x devices. Android for AM335x support has been obsoleted for several years now. Please note that we do support Android development queries for AM335x/AM437x on this forum.