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Altera_Forum
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17 years ago

Question about sample rate of audio codec WM8731 on DE2

hi, everyone. I have read code from the DE2 I2Sound Demonstration and compared with WM7831 datasheet. Everything is quite clear, except the setting of sample rate. According to the datasheet, wh...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi guys , I'm trying to understand the audio demo example for the altera De2 that comes into the CD

I'm reading the datasheet from wolfson(wm8731). At moment I doesn't know how they are using the index in the ROM array.

ROM[0]= 16'h0c00; //power down

ROM[1]= 16'h0ec2; //master

ROM[2]= 16'h0838; //sound select

ROM[3]= 16'h1000; //mclk

ROM[4]= 16'h0017; //

ROM[5]= 16'h0217; //

ROM[6]= {8'h04,1'b0,vol[6:0]}; //

ROM[7]= {8'h06,1'b0,vol[6:0]}; //sound vol

//ROM[4]= 16'h1e00; //reset

ROM[`rom_size]= 16'h1201;//active

Can you explain me please? Thank you.