Hardware schematic diagram:
github. com/wuxx/icesugar/tree/master/schematic
Example code:
github. com/wuxx/icesugar/tree/master/src/basic/verilog/music2a
PMOD-AUDIO expansion board, using standard PMOD interface, onboard small speaker, supporting dual channel 3.5 mm headphone output, adjustable volume, can be used for FPGA development boards that support standard PMOD interface, such as iCESugar.