Sound using FPGA - I2S implamntion

HI there,

I’m trying to build the arcade machine using fpga (DE-10 lite) instead of raspberry pi, and encouter difficult implamnting the sound.
The SCLK, LRCLK, DS, 5V, 3V ports of GPIO are connected (as you can see in the picture) and the signals are as the protocol require, however when I try to play simple tone (1 KHZ) there is noise.
Are there any other ports of GPIO and data that needed to be in use (or someting else I’ve been missing)?
p.s I couldn’t find schematic of the picade, if there is one it will help to understand the issue.

WhatsApp Image 2021-08-31 at 23.22.481600×900 124 KB

Thanks

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