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.qsys_edit
.qsys_edit
 
 
db
db
 
 
demo_batch
demo_batch
 
 
images
images
 
 
incremental_db
incremental_db
 
 
simulation/modelsim
simulation/modelsim
 
 
CIC_Filter.bsf
CIC_Filter.bsf
 
 
CICfilter.v
CICfilter.v
 
 
CICfilter.v.bak
CICfilter.v.bak
 
 
CLOCK_500.bsf
CLOCK_500.bsf
 
 
CLOCK_500.v
CLOCK_500.v
 
 
CLOCK_500.v.bak
CLOCK_500.v.bak
 
 
DE2_i2sound.asm.rpt
DE2_i2sound.asm.rpt
 
 
DE2_i2sound.bdf
DE2_i2sound.bdf
 
 
DE2_i2sound.cdf
DE2_i2sound.cdf
 
 
DE2_i2sound.done
DE2_i2sound.done
 
 
DE2_i2sound.eda.rpt
DE2_i2sound.eda.rpt
 
 
DE2_i2sound.fit.rpt
DE2_i2sound.fit.rpt
 
 
DE2_i2sound.fit.smsg
DE2_i2sound.fit.smsg
 
 
DE2_i2sound.fit.summary
DE2_i2sound.fit.summary
 
 
DE2_i2sound.flow.rpt
DE2_i2sound.flow.rpt
 
 
DE2_i2sound.jdi
DE2_i2sound.jdi
 
 
DE2_i2sound.map.rpt
DE2_i2sound.map.rpt
 
 
DE2_i2sound.map.smsg
DE2_i2sound.map.smsg
 
 
DE2_i2sound.map.summary
DE2_i2sound.map.summary
 
 
DE2_i2sound.pin
DE2_i2sound.pin
 
 
DE2_i2sound.pof
DE2_i2sound.pof
 
 
DE2_i2sound.qpf
DE2_i2sound.qpf
 
 
DE2_i2sound.qsf
DE2_i2sound.qsf
 
 
DE2_i2sound.qsf.bak
DE2_i2sound.qsf.bak
 
 
DE2_i2sound.sdc
DE2_i2sound.sdc
 
 
DE2_i2sound.sof
DE2_i2sound.sof
 
 
DE2_i2sound.sta.rpt
DE2_i2sound.sta.rpt
 
 
DE2_i2sound.sta.summary
DE2_i2sound.sta.summary
 
 
DE2_i2sound.tan.summary
DE2_i2sound.tan.summary
 
 
DE2_i2sound_assignment_defaults.qdf
DE2_i2sound_assignment_defaults.qdf
 
 
DE2_i2sound_nativelink_simulation.rpt
DE2_i2sound_nativelink_simulation.rpt
 
 
FIR-LPF-1kHz.v
FIR-LPF-1kHz.v
 
 
FIR-LPF-1kHz.v.bak
FIR-LPF-1kHz.v.bak
 
 
FIR_Filter.bsf
FIR_Filter.bsf
 
 
I2S_Deserializer.bsf
I2S_Deserializer.bsf
 
 
I2S_Reserializer.bsf
I2S_Reserializer.bsf
 
 
I2S_Reserializer.v
I2S_Reserializer.v
 
 
I2S_Reserializer.v.bak
I2S_Reserializer.v.bak
 
 
LED_STATUS.bsf
LED_STATUS.bsf
 
 
LED_STATUS.v
LED_STATUS.v
 
 
LED_STATUS.v.bak
LED_STATUS.v.bak
 
 
MUX-16bit.v
MUX-16bit.v
 
 
MUX-16bit.v.bak
MUX-16bit.v.bak
 
 
MUX.bsf
MUX.bsf
 
 
MUX_16bit.bsf
MUX_16bit.bsf
 
 
MUX_1bit.bsf
MUX_1bit.bsf
 
 
README.md
README.md
 
 
SRAM.bsf
SRAM.bsf
 
 
SRAM.v
SRAM.v
 
 
SRAM.v.bak
SRAM.v.bak
 
 
SRAM_Controller.bsf
SRAM_Controller.bsf
 
 
SRAM_Controller.v
SRAM_Controller.v
 
 
SRAM_Controller.v.bak
SRAM_Controller.v.bak
 
 
SRAM_reader.v
SRAM_reader.v
 
 
SRAM_reader.v.bak
SRAM_reader.v.bak
 
 
SRAM_writer.v
SRAM_writer.v
 
 
SRAM_writer.v.bak
SRAM_writer.v.bak
 
 
audio_deserializer2.v
audio_deserializer2.v
 
 
audio_deserializer2.v.bak
audio_deserializer2.v.bak
 
 
audio_parallel_to_serial.bsf
audio_parallel_to_serial.bsf
 
 
audio_parallel_to_serial.v
audio_parallel_to_serial.v
 
 
audio_parallel_to_serial.v.bak
audio_parallel_to_serial.v.bak
 
 
audio_parallel_to_serial_testbench.v
audio_parallel_to_serial_testbench.v
 
 
audio_parallel_to_serial_testbench.v.bak
audio_parallel_to_serial_testbench.v.bak
 
 
audio_passthrough_testbench.v
audio_passthrough_testbench.v
 
 
audio_passthrough_testbench.v.bak
audio_passthrough_testbench.v.bak
 
 
audio_passthrough_testbench_with_gap.v
audio_passthrough_testbench_with_gap.v
 
 
audio_passthrough_testbench_with_gap.v.bak
audio_passthrough_testbench_with_gap.v.bak
 
 
audio_serial_to_parallel.bsf
audio_serial_to_parallel.bsf
 
 
audio_serial_to_parallel.v
audio_serial_to_parallel.v
 
 
audio_serial_to_parallel.v.bak
audio_serial_to_parallel.v.bak
 
 
audio_serial_to_parallel_testbench.v
audio_serial_to_parallel_testbench.v
 
 
audio_serial_to_parallel_testbench.v.bak
audio_serial_to_parallel_testbench.v.bak
 
 
decimator.v
decimator.v
 
 
decimator.v.bak
decimator.v.bak
 
 
delayBy1bit.bsf
delayBy1bit.bsf
 
 
delayBy1bit.v
delayBy1bit.v
 
 
delayBy1bit.v.bak
delayBy1bit.v.bak
 
 
div2_20.bsf
div2_20.bsf
 
 
div2_20.v
div2_20.v
 
 
div2_20.v.bak
div2_20.v.bak
 
 
i2c.bsf
i2c.bsf
 
 
i2c.v
i2c.v
 
 
keytr.bsf
keytr.bsf
 
 
keytr.v
keytr.v
 
 
memReader.bsf
memReader.bsf
 
 
memWriter.bsf
memWriter.bsf
 
 
movingAverageFilter.bsf
movingAverageFilter.bsf
 
 
movingAverageFilter.v
movingAverageFilter.v
 
 
movingAverageFilter.v.bak
movingAverageFilter.v.bak
 
 
prev_cmp_DE2_i2sound.qmsg
prev_cmp_DE2_i2sound.qmsg
 
 
processing.bsf
processing.bsf
 
 
processing.v
processing.v
 
 
processing.v.bak
processing.v.bak
 
 

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https://github.com/burntCherryCake/DE2-I2S-Serializer-Deserializer

Altera DE2 Audio Codec Serializer and Deserializer, with some basic Audio DSP implementations

Summary

There is a bug in the original DE2 sample projects in the way the Wolfson (now Cirrus Logic) WM8731 Audio ADC/DAC configuration with the way the hardware was reset, causing the audio codec to generate no output. That has been fixed in this repository.

This repository is based on the original Altera DE2 System CD's example for i2s sound. The code compiles and runs in Quartus II 64-bit version 13.0.1 Build 232 06/12/2013 SJ Web Edition

New Features

  • Synchronous I2S Deserializer and Reserealizer implementation with support for true arbitrary length L/R packet sizes

  • Working SRAM controller, read and write tested with an external logic analyzer

  • A DSP path that has a working implementation of a moving average filter that uses the on-board SRAM

  • For convenience, a switch input has been added to toggle between a passthrough (mic/line in) path and a DSP path

  • The FIR and CIC filters are possibley partially working.

DE2 board (now obsolete) product website (Terasic) https://www.terasic.com.tw/cgi-bin/page/archive.pl?No=30

Picture of Schematic and Blocks Connection

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