TX and RX interface to two microcontroller

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sarmad_101

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Hi,

I wanted to send data by microcontroller and FPGA on a single line TX and RX.

TX and RX is connected to the CANBUS transceiver so in this way both the controller behave like a master but only one will interact to the transceiver at a time.

Do I need any pull-up or pull down in my circuit that I made ? I have enclosed the image below.

Thank you.
 

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