Pin Configuration for sending and receiving

Hi,

   Your configuration of the ON, S and nRE pins are reasonable for operation which should generate signals on CANH/CANL; however, there are plenty of other opportunities for misconfiguration that would prevent observing signals on the bus.

  Are you using the eval board or your own circuit?

  Is there 5V present on the isolated side (Vcc2)?  If not, are both Vcc and PVcc powered? 

   Is VL powered?

  Is your test data TxD waveform presenting an excessively long dominant state causing the transceiver to time out and become recessive?

  Do you see the RxD output of the LTM2889 toggling with TxD?  (probably not, but...)

  Does RxD toggle with bus traffic externally generated (e.g. by the IXAAT device)? 

   Is there a short circuit or miswiring of the CAN bus pins?

Eric