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TDA2EXEVM: Interfacing with AWR1642BOOST EVM (Radar Sensor)

Ranjith Bhide
Intellectual 530 points

Part Number: TDA2EXEVM

Hi,

We are looking at connecting the AWR1642BOOST EVM to the TDA2X EVM through CAN.

However, we noticed that the AWR1642BOOST EVM has a single CAN-FD port while the TDA2X EVM has a single Classic CAN port. Can the AWR1642BOOST EVM be configured to send plain Classic CAN messages via the CAN-FD port?

If not, what is the recommended method for interfacing the AWR1642BOOST EVM to the TDA2X EVM via CAN?

Regards,

Ranjith

  • 0
    TI__Mastermind 18080 points
    Hi Ranjith,

    I'm not familiar with the AWR1642BOOST EVM. I just checked the EVM datasheet:
    www.ti.com/.../swrs203

    There are described 2 CAN ports: one CAN-FD and one classic. Can you please check again documents and inspect your board for a second CAN?
    Also, what is the version of your board?

    Regards,
    Stan
  • 0 in reply to Stanislav Stilyanov
    Intellectual 530 points
    Hi Stan,

    Thanks for quick response.
    The datasheet link present in your comment is of the AWR1642 Radar Sensor, not of the EVM.

    Datasheet of AWR1642BOOST EVM is available at www.ti.com/.../swru508a.pdf
    This document mentions of only one CAN-FD Connector in Topic 1.2 Key Features, as well as in Figure 1. EVM (Front).

    So, It looks like the EVM board is exposing only CAN-FD interface, out of the 2 CAN Interfaces provided by AWR1642 Radar Sensor.

    Regards,
    Ranjith
  • 0 in reply to Ranjith Bhide
    TI__Mastermind 18080 points

    Hi Ranjith,

    Sorry, I didn't realize that I was looking at the chip datasheet.

    I've checked also the EVM document. It looks like classic CAN can be reached on one of the connectors (e.g. J1). CAN is muxed with SPIA_CS and SPIA_CLK internally, hence CAN must be selected in software. CAN is also available on other 2 pins: TRACE_DATA_12 and TRACE_DATA_13 which are also routed to J1.

    Note that you will need an external CAN PHY transceiver module/PCB, because the 2 pins are a simple, CMOS RX/TX pair. (CAN-FD has onboard PHY)

    Regards,

    Stan

    P.S. Now I recall that if you need only the two nodes on the network (AWR and TDA2), it could be possible to connect them PHY-less. I.e.

    TX ----> RX

    RX <------TX

    , provided that voltage levels match. I didn't try this however.