msm9842 Oki Semiconductor, msm9842 Datasheet
msm9842
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msm9842 Summary of contents
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... Oki office or representative. GENERAL DESCRIPTION The MSM9842 is a mono/stereo playback LSI with a 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 even higher quality sound reproduction. The playback function of the MSM9842 is controlled by an MCU via 8/16-bit bus interface ...
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... EMP FIFO MID FUL/DREQR CH/DACKR D15 to D0 MCU I D/C BUSY AOUTR LPF DAC DAC LPF Volume Controller ADPCM2/ADPCM/PCM/Non-linear PCM Synthesizer DMA I/F Timing Controller IOW DREQL DACKL VCK FEDL9842-02 MSM9842 AV DD AGND DV DD DGND DASD SOCK TEST0 TEST1 TEST2 TEST3 TEST4 XT RESET XT 2/9 ...
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... PIN CONFIGURATION (TOP VIEW D10 13 D11 Connection 56-pin plastic QFP FEDL9842-02 MSM9842 BUSY FUL/DREQR 36 MID 35 EMP 34 CH/DACKR RESET AOUTR 3/9 ...
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... IOW signal is accepted. When stereo playback is selected, DACKL is a DMA transfer DACKL I acknowledge signal for left FIFO memory. Active "L" can be changed to active "H" by command input. If DMA transfer is not used, set this pin to "H" level. FEDL9842-02 Description MSM9842 4/9 ...
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... Semiconductor PIN DESCRIPTIONS Symbol Type Signal to write external memory data to MSM9842 during DMA transfer. IOW I If DMA transfer is not used, set this pin to "H" level. DASD O 16-bit serial data output pin when external DAC is used. Synchronizing clock for 16-bit serial data input when external DAC is used. ...
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... =AV =2 fosc=4.096 MHz, whithout load At power down, without load Ta=–40 to +70°C I DDS At power down, without load Ta=–40 to +85°C FEDL9842-02 MSM9842 Rating Unit –0 7.0 V –0 0 – 155 °C Range Unit 2.7 to 5.5 V –40 to +85 ° ...
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... Interface when DMA controler is used (16-bit bus) Memory DMA Controller MCU 2) MCU & external memory interface (16-bit bus) Memory MCU M9842 D15 to 0 DREQL DACKL IOW DREQR DACKR D/C Data bus M9842 D15 to 0 DREQL DACKL IOW D/C CH EMP MID FUL Data bus FEDL9842-02 MSM9842 7/9 ...
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... FEDL9842-02 Package material Epoxy resin Lead frame material 42 alloy Solder plating (≥5 mm) Pin treatment Package weight (g) 0.43 TYP. Rev. No./Last Revised 4/Nov. 28, 1996 MSM9842 (Unit : mm) 8/9 ...
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... No part of the contents contained herein may be reprinted or reproduced without our prior permission. 9. MS-DOS is a registered trademark of Microsoft Corporation. Copyright 2000 Oki Electric Industry Co., Ltd. Printed in Japan FEDL9842-02 MSM9842 9/9 ...