• General Description
MSM9844 is a Voice Synthesizer LSI with on-chip FIFO memory.
A newly developed synthesis algorithm, OKI ADPCM2, promises superb sound quality. The LSI is fully controllable from an external CPU via 16/8-bit bus interface.
MSM9844 is an ideal choice for application systems where such non-microchip data storage as CD ROM is used..

• Features
• 16/8-bit Bus Interface
• On-chip FIFO Memory Capacity : 1024 Bits 23 ms Buffering
          When Sampling Frequency at 8.0 kHz, 4-bit ADPCM and Monaural Playback selected
• Synthesis Algorithms for Users Selection
          4,5,6,7,8-bit OKI ADPCM2
          4-bit OKI ADPCM
          8/16-bit Straight PCM
          8-bit OKI Non-Linear PCM
• Oscillation Clock Frequency: 16.9344 MHz / 24.576 MHz
• Sampling Frequency:
          11.025 kHz, 22.05 kHz, 44.1 kHz at fOSC=16.9344 MHz
          4.0 kHz, 6.4 kHz, 8.0 kHz, 12.8 kHz, 16.0 kHz, 32.0 kHz, 48.0 kHz at fOSC=24.576 MHz
• Sound Level Control (8 levels, 0dB ~ -21dB)
• Built-in 14-bit D/A Converter
• 3 types of Serial Interface for External DAC
• Sampling Rate Conversion Function
• Packaging: 56-pin Plastic QFP (QFP56-P-910-0.65-2K)
          Product Code: MSM9844GA