CAN bus does not output any signal.

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Hello everyone,
I was recently trying to make use of CAN module on XMC4500 Relax Kit but it doesnt seem to work for me.
I began with example project which used internal CAN bus and it worked just fine. Later i unchecked loopback mode and
assigned 1.13 and 1.12 pins as output to sn65hvd230 transciver IC. after loeading program to MCU i found no output on CAN bus nor on RelaxKit
goldpins.
Is there something more i need to do ?
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