Greetings I have the LPC Audio and voice Recognition kit which is an LPC54114 base-board with a MAO shield. I have looked at the schematic for the shield which shows three jumpers installed on P1. These jumpers connect 'VDD', 'CLK', and 'DAT' from the on-board digital mic to the MCU. Upon further examination it appears that these three jumpers could be removed and a different digital directly connected to Header P1, pins 1, 3, and 5. I tried this and it failed to work. I also noted that when the jumpers are removed, LED D2 *does not* illuminate which to me is an indicator that one of the signals - my guess being VDD feeds through and goes *beyond* just the microphone.
Can someone please provide some enlightenment ?
Thanks, and regards,