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Original question:

TCAN4550-Q1: TCAN4550

TCAN4550-Q1: TCAN4550 EVM board and software support

Jeff Xie
Intellectual 1780 points
Part Number: TCAN4550-Q1
Other Parts Discussed in Thread: TCAN4550

Hi team,

I have three questions about TCAN4550, 

1. Do we have available EVM board of TCAN4550?

2. As TCAN4550 need software confiuration, do we have software program guide for TCAN4550?

3. Distance is a key spec in the application, as 40M is dangerous to achieve, can I use Transmitter Delay Compensation Register(TDCO) to transmit longer? How to use this register?

Thanks

  • 0
    TI__Guru 74322 points

    Jeff,

    Thanks for your interest in the TCAN4550!

    1. There is, but we are currently restocking since the first batch of EVMs have already been used up. If you go to the TCAN4550 product page you can click the link for the full datasheet and other information. Once that gets approved you should get a TI store link that will allow you to request an EVM from the TI stock. If you can wait until the end of January, we should have a full stock by then.
    2. If you click my username, you'll be able to find my TI email. Email me directly and I can give you more information about the software development.
    3. The limitation for CAN bus physical distance is the propagation loop delay. This is defined as the amount of time it takes for a bit to travel from the transmitter output of the control, down the entire length of the physical bus, and back to the controller receiver input. The transmitter delay compensation register is used to compensate for the delay associated with the transceiver when the bit times are shorter than the loop delay itself (this can happen at 2Mbps, but typically 5Mbps). However, it can also be used to compensate for delay at any data rate, the user just has to be careful that they don't add too much delay at lower speeds.

    The transmitter delay compensation value is a common topic discussed when developing CAN, and there is information online to learn more about it. Here is a useful tool when calculating loop delay time and how to correctly size your CAN bus.

    Do you know how long the distance will be in this application?

    Regards,