TL7231MD

TL7231MD is a single-chip  ISO/IEC 11172-3 Layer III audio decoder, capable of decoding  compressed elementary bit streams as specified in ISO/IEC standard. Since it integrated onchip ADC and on-chip DAC, it can provide you more small and cheaper solution for MP3 player application. It is designed to be well suited for portable audio appliances.

TL7231MD receives the input data bit stream through a serial data interface. The decoded signal is 16-bit serial PCM format that can be sent directly to DAC. The generated PCM data  can be sent to on-chip DAC or off-chip DAC according to user preference. The off-chip DAC interface is programmable to adapt the PCM output of TL7231MD to the most common DACs used on the market.

An 8-bit host interface port is provided to receive control information from and send status information to host. 8-bit microcontrollers such as those of Intel or Motorola can be connected easily.

TL7231MD has the capability of compressing voice signals. It can receive voice signals through on-chip ADC. The compressed voice signals are transmitted to or received from host through serial data interface. It can also reproduce the voice signals from the compressed voice signals.