I'm running into this insane problem just trying to play some ordinary wave file on a LM4550 audio codec on the XUP board
I guess what I'm wondering is, is there something werid about configuring the LM4550 that I'm missing and that maybe causing this. I configure the following registers on the LM4550 which are on the playback path:
Register: 02h Value 00h (Line out, unmute) Register: 04h Value 00h (Headphone, unmute) 18h Value 00h (PCM Gain, unmute) 20h value 80h (To bypass the 3D Sound Circuitry) 0Ah value 00h (to mute the PC Beep input)
Any insights to configuring/using the LM4550, would be really appreciated.
Btw - the test file is something I recorded using the Windows Sound Recorder setting the output format to PCM at 48000 KHZ, 16-bit Stereo. Or is perhaps Sound Recorder screwing me?