In this design one of the DM radio is configured as analog in the codeplug.

DM4xxx---------------------------DM4xxx 

PIN17 Ext PTT mic- - - - - - - PIN19

PIN19 CSQ detect- - - - - - - PIN17

PIN14 Rx Audio- - - - - - - - - PIN11

PIN12 Audio ground- - - - - - PIN12

PIN11 Tx Audio - - - - - - - - - PIN14