ML2302 Overview
Description
The ML2302 is a recording and playback LSI with built-in FIFO memories for buffering. It employs the new 2-bit ADPCM2 algorithm in addition to conventional 4-bit OKIADPCM and 4-bit OKIADPCM2 algorithms.
Key Features
- Built-in two 1024-bit FIFOs (buffering time of 32 ms when using 8 kHz sampling frequency and 4-bit ADPCM)
- Source oscillation frequency 16.384 MHz
- Sampling frequency (fsam) 4.0 to 12.8 kHz (OKIADPCM2) 4.0 to 25.6 kHz (8-bit straight PCM)
- Supports 8-bit bus interface
- Built-in voice level detection function (VAC)
- Built-in noise injection function
- Supports external DAC interface
- Built-in volume control circuit (0 dB to –44 dB: –2 dB step, –44 dB to –80 dB: –4 dB step)
- Built-in 14-bit A/D converter and 14-bit D/A converter
- Built-in low pass filter (LPF) (recording side: analog filter, playback side: digital filter)
