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MSM9842
 Data Sheet, this is a Playback LSI with
Built-in FIFO
Documents
| » PDF of this Data Sheet (125 KB) is
available. |
MSM9842.pdf
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Applications
The data
sheet
contains minimum specifications. For full specifications, please
contact your nearest Oki office or
representative.
Description
The
MSM9842 is a mono/stereo playback LSI with built-in 1K bit FIFO for easy
interface with external systems or non-semiconductor memory. It utilizes
multiple playback modes, including the new ADPCM2 algorithm, which allows for
high quality sound reproduction. The playback function of the MSM9842 is
controlled by an MCU via 8 / 16-bit bus interface. The MSM9842 is identical to
the MSM9841, except that it is
for playback only.
Features
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16/8-bit bus interface support |
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FIFO capacity: User-definable (256/512/1024
bits)
(buffering time of 32 ms when using 8 kHz sampling frequency, 4-bit
ADPCM2/ADPCM, and in monaural playback) |
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Supports four compression algorithms for playback:
4, 5, 6,
7, 8-bit ADPCM2; 4-bit ADPCM; 8; 16-bit PCM; and 8-bit Nonlinear PCM |
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Sampling frequency:
4.0 kHz, 6.4 kHz, 8.0 kHz, 12.8 kHz,
16.0 kHz, 32.0 kHz (fosc=4.096 MHz) |
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Sampling frequency:
22.05 kHz, 44.1 kHz (fosc=5.6448 MHz)
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DMA interface support |
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Volume control (8 steps: 0 dB to -21 dB) |
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Built-in 14-bit D/A converter |
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Built-in low pass filter (LPF) |
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Power supply voltage: 2.7 V to 5.5 V |
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Package:
56-pin plastic QFP (QFP56-P-910-0.65-2K) (Product
name: MSM9842GA) |
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