This connect CAN corssbare LINE1 to the first external CAN bus transceiver which is connected to sntadard pins 2 and 7 on the DB-9 CAN connecter on MZ_APO. The second transceiver is connected to lines 1 and 8 on the same transceiver.
The CAN crosbar documentation can be found on page 45 (59) of [Martin Jeřábek's diploma theses][jerabek_dp_pdf].
The CAN crosbar documentation can be found in the chapter [5.2 Rewrite of CAN crossbar IP][jerabek_dp_pdf]on page 45 (59) of [Martin Jeřábek's diploma theses][jerabek_dp_pdf].
