ALC5621 s3c2443 wince50 driver source code integrity, and can be used directly.
File list:
IIS+2443+5621
............\IIS
............\...\obj
............\...\...\ARMV4I
............\...\...\......\retail
............\...\...\......\......\devctxt.obj
............\...\...\......\......\hwctxt.obj
............\...\...\......\......\i2s.obj
............\...\...\......\......\input.obj
............\...\...\......\......\midinote.obj
............\...\...\......\......\midistrm.obj
............\...\...\......\......\mixerdrv.obj
............\...\...\......\......\output.obj
............\...\...\......\......\RtCodec.obj
............\...\...\......\......\strmctxt.obj
............\...\...\......\......\wavemain.obj
............\...\...\......\......\_objects.mac
............\...\RT5621
............\...\......\Rt5621.cpp
............\...\......\Rt5621.h
............\...\RT56X0
............\...\......\RTCodecComm.cpp
............\...\......\RTCodecComm.h
............\...\audiosys.h
............\...\Build.log
............\...\devctxt.cpp
............\...\devctxt.h
............\...\hwctxt.cpp
............\...\hwctxt.h
............\...\i2s.cpp
............\...\i2s.h
............\...\input.cpp
............\...\makefile
............\...\midinote.cpp
............\...\midistrm.cpp
............\...\midistrm.h
............\...\mixerdrv.cpp
............\...\mixerdrv.h
............\...\output.cpp
............\...\RtCodec.cpp
............\...\RtCodec.h
............\...\RTConfig.h
............\...\sources
............\...\strmctxt.cpp
............\...\strmctxt.h
............\...\wavedev.def
............\...\wavemain.cpp
............\...\wavemain.h
............\...\wavepdd.h
............\...\wfmtmidi.h