CyL3D: SoM exploration

Following my previous post regarding the choice of an FPGA, we found out that Cyclone V models only come in BGA format, which is very impractical for us to solder on our PCB. I focused my research on System on Modules (SoM), which have the advantage of providing us with an easier pin configuration to solder as well as an already built system around the FPGA.

In order to ensure that the variations in latency over WiFi (up to several dozens of ms according to our measurements) will not compromise the display of the frames, we have to consider including more memory to our system. With a 24-bit color depth and a 30Hz refresh rate, we would need more than the 4,460kb embedded memory on the 5CEBA5 if we want to account for a 50ms spike in latency. Given that our final presentation will most likely be done in a WiFi-saturated environment, we have to plan for more memory.

The Aries MCV series include a Cyclone V SE with a cortex A9 and 1GB of DDR3. We would use the CPU with Linux running on it, which would allow us to use a WiFi over SDIO module. The 1GB of DDR3 will giveus more than enough buffering capacity. It would be connected to our PCB by two qsh-090-01-f-d-a connectors positioned under the SoM.

Among the Aries products, I think the MCV-6DB would be the best for us because it keeps the same FPGA as the one I listed in my previous post.


4 Replies to “CyL3D: SoM exploration”

    1. Hey.
      It was strongly stressed by our professors that previous projects were often uncompleted because of software development time. Knowing that, we are going for a Cyclone because the members of our group already have experience with Altera’s tool chain and because Altera’s FPGAs are available to us at Telecom for testing. It we allow us to start developing and testing early and with less trial and error.

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