Honored Contributor--------------------------------------------------------------------------------
I set up everything as in the DE2 manual, and use the reference design to play music(48KHZ,wav). But why there is a small amount noise along with the music from the headset? Thanks for help!
Honored Contributorhow did you plug in your line in and line out wires? do you use splitters (y-adapaters) or anything? i have a de2-70 and the audio codec works fine for me... Try to remove possible sources of interference.. do you have other wires or power cables near your DE2 board? also check your headset to make sure its not damaged
Honored ContributorI didn't use the line in. I read the music data from SD card and directly insert my headset into the line out port. I tried three different headsets, the same result.......
Honored ContributorOn my DE2-70 I don't hear any noise either. If you can reproduce with with multiple good sound samples, I would contact Terasic. It is possible that your board is marginal.
Once I have had to send a Xilinx board back which worked, but the voltage regulator was near melting. The replacement was fine. Marginal boards do happen.Honored ContributorHonored ContributorI have DE2 with 2C35 and not sure DE2-70 has the same HDL file, but… Please try to edit “I2C_AV_Config.v” and replace the line
A_PATH_CTRL : LUT_DATA <= 16'h08F8; With A_PATH_CTRL : LUT_DATA <= 16'h08D0; Then re-compile the quartus project. This inhibits analog mic-in sidetone and line-in bypass mixing.Honored Contributor1.Did you use i2c to config Audio Core? When add an audio core in SOPC, all parameter are filled so I guest that there's no need to use i2c to config.
2. I used default setting (48Khz samplerate, clk 18432000,. 16bit data, 2 channel). In according to Manual, data registers are BASE+8, and BASE+12 Then I coded: IOWR(AUDIO_0_BASE,8,#value) IOWR(AUDIO_0_BASE,12,#value) nothing happens!!!! plz tell me whyHonored Contributorcan you please upload the VHDL file for the AUDIO CODEC that you are using along with pin configuration please i am really in need of that
Honored ContributorHello, i am having the same problem with the SD card, there is considerable noise level on the output, so is there any workaround for this?
Thanks!
