audio sound and mic admin

making diferences between cirrus logic drivers and realtek drivers i cant find the option that i choose the chanel for the mix plug audio.

i have a radio controler that i need to conect on the mixed plug but the sistem detect an audio output, but i need to change it to the mic input (the software that i use to detect the radiocontrol use de mic input to recognice the channels information) that on the realtek i can easely change.

i just need to change the detection of the headphones to the mic on the mixed 3.5 mm plug that the macbook have. or any other option to solve that? thank you

so sorry for my really bad english