W9980

W9980 was specially designed for long duration digital recoding appliance using NVM as the storage device. The typical applications are included voice recorder, language learning tool, voice notebook, and high quality voice toy.

The W9980D is DSP base Digital Voice Recorder chip. This chip compress and decompress sampled voice data by the algorithm G.723.1 and get high quality voice data for play or for voice to text translate. The W9990D integrate interfaces for DVR application and minimize PC board area. This chip build in good power management and suitable for portable machine design.

The voice sampling rate for ITU-G.723.1 can be 8K or 11K and support 5.3K/6.3K bit rate for 8K sampling rate or 7.3/8.7K data rate for 11K sampling rate. The compression rate is 24 or 20 for the two bit rate. The ITU-G.723 get high quality voice compress data and suitable for voice recognition after decompress. The W9980D build in UART and Parallel port interface to PC host, the compressed data can upload to PC for voice mail or for voice to text translation by IBM Via-Voice software. The W9980D integrate Synchronous Serial Port to interface external CODEC for voice sample and play, LCD interface, PIO interface for user interface and memory interface for voice data recorded. The memory controller can interface to SmartMedia, CompactFlash, IDE, or Intel/AMD type flash memory. In addition to receive bit stream from external CODEC, this chip can receive bit stream from the 8032/8051 mode 0 serial port by the synchronous serial port interface to these external micro controller.

The W9980D is a 3.3V device with TTL compatibility 3.3V only I/O, and is packaged in a 128L LQFP.