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SW-EK-TM4C1294XL: EPI for two devices

Part Number: SW-EK-TM4C1294XL


I'm a newbie about the EPI port, and I found this TI design, and I want to now  if is possible use the EPI port for controlling a camera and olso a memory like a SRAM or SDRAM.



  • The EPI bus can function with 2 chip selects. The TivaWare peripheral driver library can help get you started.

    SDRAM sounds tricky because it needs to be refreshed.

    SRAM may not meet the speed needs of your camera due to the architecture. Look at figure 32-34 in the datasheet. When using SRAM, you can set the clock to 60MHz, but most of the time is inefficiently spend not writing data. You only get burst writes with SDRAM.

    The screen in your example is small. The data rate required increases exponentially with screen size (diagonal measurement).

  • The EPI can control both, but not at the same time. The throughput demanded by the 30 FPS QVGA would not allow time to switch the configuration of the EPI while continuously capturing video.