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MSM6295
4-Channel Mixing ADPCM Voice Synthesis IC
MSM6295
GENERAL DESCRIPTION
The MSM6295 can access an external ROM, where voice or sound effects data is stored. The
maximum external ROM size is 256 Kbytes.
The MSM6295 has a 4-channel synthesis stage which allows the simultaneous playback of four
different channels. It is used to have a voice with BGM (background music) effect, instrumental
sound, echo, etc.
FEATURES
• 4-bit ADPCM method
• External ROM capacity:
MSM6295GS-K/–2K: 2 Mbits (Max.)
MSM6295VRS: 1 Mbit (Max.)
• Interface with common CPU and MPU
• Sampling frequency:
6.4 kHz and 8 kHz (@1.056 MHz clock)
25.6 kHz and 32 kHz (@4.224 MHz clock)
• Voice level attenuation:
0dB to –24dB (9 steps)
Attenuation on each channel:
–3dB/step
• Low power CMOS process
• 5 V single power supply
• Number of mixing channels:
4 (Max.)
• Package options:
44-pin plastic QFP (QFP44-P-910-K) (Product name: MSM6295GS-K)
44-pin plastic QFP (QFP44-P-910-2K) (Product name: MSM6295GS-2K)
42-pin plastic DIP (DIP42-P-600) (Product name: MSM6295VRS) (Note)
Note:
Since the 42-pin DIP type MSM6295VRS does not have Pin A17, the external ROM capacity
is limited to up to 1 Mbit. Moreover, since the IC does not have the
RD
pin either, the busy
status cannot be read.
OKI [ OKI ELECTRONIC COMPONETS ]
