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AWR1243BOOST: connection to TSW1400 and number of cascaded boards

mafer
Prodigy 20 points
Part Number: AWR1243BOOST
Other Parts Discussed in Thread: AWR1243

The AWR1243boost board has a CSI2 output interface for data acquisition. However, the TSW1400 (which is recommended for this radar sensor) only mentions having LVDS ADC interface. I wanted to know if those interfaces are fully compatible or if these two devices have to be connected in any other way.

I also wanted to know how many cascaded AWR1243 devices can I connect to the same TSW1400 EVM. How would that be done if that module has a single LVDS ADC connector? 

Thank you in advance.

[unlocked 1/19/18]>LE

  • 0
    TI__Mastermind 30025 points
    Hello,

    The TSW1400 can only connect to the AWR1243 through LVDS interface. To output data through the CSI interface you would need a processor that contains a CSI2 interface, such as the TDA3.

    As for the maximum number of cascaded devices, 2 chip and 4 chip cascaded boards have been attempted. We are releasing an app note on cascaded designs that should release next month that will have more information.

    Regards,

    Adrian
  • 0 in reply to aozer
    Prodigy 20 points

    Hello again, thank you for your early response.

    There is something that is still unclear to me: according to the datasheets the AWR1243BOOST board only provides a CSI2 interface, not LVDS. Therefore, I had assumed that if I wanted to extract the ADC data through LVDS (using the TSW1400) I would have to manually extract the interface from the AWR1243 chip pins. Is that correct?

    Another question that troubles me is whether it is strictly necessary to utilize a DEVPACK board per AWR1243BOOST board in order to have full control of the radar signals through a computer that controls the external processor.

    Thank you.

  • 0
    TI__Guru 71526 points
    unlocked 1/19/18>[LE]
  • 0 in reply to mafer
    TI__Mastermind 30025 points

    Hello,

    The CSI2 and LVDS ports are mapped to the same pins and are mapped to the 60 pin connector. You can see how they are mapped in the schematic:

    Yes, the Devpack is necessary to access the API's via a PC and Radar Studio.

    Regards,

    Adrian

  • 0 in reply to aozer
    Intellectual 350 points
    Dear Adrian, You mentioned about an app note on cascaded designs. Do you have this document ready? or may be there such boards available as well? Generally cascading is it only applicable to 1243 or to other two devices as well? Thank you
  • 0 in reply to Maxim Rykunov
    TI__Mastermind 30025 points

    Hello Maxim,

    The app note is available here:

    We do not currently have any cascade boards available. Yes, cascade is only on the 1243. The 1443 and 1642 do not have the FMCW syncin/out pins to provide synchronization of the 20GHz signal between devices.

    Regards,

    Adrian