AK2117 is a new generation single-chip highly-integrated digital multimedia solution for devices such as audio and video players. It includes an audio decoder and a video decoder with embedded RAM and ROM., ADPCM record capabilities and USB interface for downloading music or movie and uploading voice recordings. AK2117 also provides an interface to flash memory, LED/ LCD, button and switch inputs, headphones, speakers, and microphone, and FM radio input and control. lts embedded audio codec supports WMA, and the embedded video codec supports Motion JPEG. For devices like USB-Disk, it can act as an USB mass storage slave device to personal computer system. The Chip has low power consumption to allow long battery life and an efficient flexible on-chip DC-DC converter that allows Li-on battery only. The built-in Sigma-Delta D/A includes a headphone driver to directly drive low impedance headphone, and also a Class D PA to directly drive the Speaker. The A/D includes inputs for both microphone and analog audio in to support voice recording and FM radio integration features. Thus, it provides a true ’ALL-IN-ONE’ solution that is ideally suited for highly optimized digital audio and video players.
