MSM9845 Datasheet, PDF (1/9 Pages) OKI electronic componets – VOICE SYNTHESIS LSI with on-chip FIFO Memory

FEDL9845DIGEST-01
1_{Semiconductor}
MSM9845
VOICE SYNTHESIS LSI with on-chip FIFO Memory
Version 3.10, Dec 4, 2000
This document contains minimum specifications. For full specifications, please contact your nearest Oki office or
representative.
GENERAL DESCRIPTION
MSM9845 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.
MSM9845 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 16 ms Buffering
When Sampling Frequency at 16.0 kHz, 4-bit ADPCM2 and Monaural Playback selected
• Synthesis Algorithms for User's 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 f_OSC = 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 f_OSC = 24.576 MHz
• Sound Level Control (8 levels, 0 dB to –21 dB)
• 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: MSM9845GA
DIFFERENCE BETWEEN MSM9845 AND MSM9844
ITEM
SRC
MSM9845GA
On-Chip FIR Filter
MSM9844GA
Not On-Chip FIR Filter
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