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DCA1000EVM: maximum data transfer rate

Renan Santos Adriano
Mastermind 22340 points
Part Number: DCA1000EVM
Other Parts Discussed in Thread: AWR1243,

Hello Team,

My customer is looking at the user guide and mentioned that high-speed data transfer through LVDS (AWR1243 and DCA1000), what is the maximum data transfer rate? Can you give us a number?

Instead of DCA1000EVM can he use any DSP which has the LVDS channel? What is the minimum RAM required to store 10seconds of data? They are planning to design a single board using AWR1243 and which are the other options for other interfacings ICs like processor, DSP, memory, and other interfaces ICs. They do not want to use separate EVM.

Regards,


Renan

  • 0
    TI__Guru*** 148804 points

    Hi,

    The hardware team will review this question and will get back to you before end of the week

    thank you

    Cesar

  • 0
    TI__Guru 58035 points

    Hello Renan,

    From the AWr1243 device the LVDS lanes can work at max 900Mbps rate. With 4 lanes this would be 3.6 Gbps max data rate. But this would not be continuous since once one chirp data is sent out there will be a pause until next chirp data is available and also during the frame idle time there will be no data sent out. The average data rate will depend on your chirp and frame configuration.

    The RAM needed to store 10sec of data will depend on your chirp and frame configuration. For example if you are use 4Rx in real only mode,16bit sample mode and  have 256 samples in a chirp then each chirp will have 16384 bits or 2048 bytes. In each frame if you have say 128 such chirps and your frame periodicity is 100msec then in 100msec you will have 2048*128= 262144 bytes. So in 10sec you will have 26214400 bytes of data. You can do this calculation for the chirp and frame configuration you plan to use.

    Regards,
    vivek