> Something is wrong! Do not leave those pins connected like that. Your symptoms imply that one pin is "driving low" and the other pin is "driving high" - creating a voltage divider effect. Double check your pins and config. > > Which specific pins are you connected to??\ > > mikedunn dear mike, i have connected the DX0-pin from one dsk to the DR-pin from another dsk. on the master-dsp is the DX-pin on 300mV and the DR-pin on 3,1V like the slave-DR-pin. but i believe that the McBSPs are not initialised correctly, so perhabs they are still "connected" to the onboard AIC23-codec, because when i write the code for the McBSP1 on the master-dsp i see nothing on the scope....no clock, no frame, no data and DX/DR-pins are low...no 300mV, just 0V...... |