if multimedia audio controller appears in the list, right-click the icon, and then click update driver or update driver software.
如果多媒体音频控制器出现在清单中,右键单击该图标,然后单击更新驱动程序或更新的驱动程序软件。
this paper explains the hardware design of the embedded audio controller and initializing code of the lpc2214 arm microcontroller in detail. besides, i wish to share the experience in debugging.