I am trying to get audio output from Atlys board (uses LM4550 audio codec). I got the ac97_controller.v core file which generates the serial o/p for the codec.
I only want to send a square wave and i wrote top module for that. It sends the square wave audio PCM samples(2's complement and 18 bit). I also wrote logic to unmute the headphone & line_out o/p. Even post-route simulation looks perfect. But when i download it to Atlys board, it doesn't work. Can anybody tell what might be the problem. Thanks in Advance.
P.S. I checked the audio codec with demo project for AC97 from www.digilentinc.com and it works, the file ac97_controller is in there.