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[TJA1027] question about RXD

Question asked by Brad Lin on Feb 28, 2019
Latest reply on Feb 28, 2019 by G.w. Sun

I would like to connect TJA1027 LIN controller to a 3.3V interface on a FPGA. The datasheet shows the following application diagram. To work with a 3.3V FPGA interface, do I just need to add a pull the RXD signal (open-drain output) to 3.3V, not matter of the VBAT voltage on the other side of TJA1027? If this is correct, what pull-up resistance value should I use?

 

Is there anything else I need to to on TXD and SLP_N signals (input)?

 

Thanks!#

application diagram

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