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YSS902 Datasheet

  • YSS902

  • Dolby Digital (AC-3) / Pro Logic decoder + Sub DSP

  • 599.46KB

  • 12頁

  • ETC

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YSS902
AC3D
Dolby Digital (AC-3) / Pro Logic decoder + Sub DSP
INTRODUCTION
The YSS902 is one chip LSI consisting of two built-in DSP鈥檚 ; Dolby Digital (AC-3) / Pro Logic (Main DSP) and a
sound processing DSP (Sub DSP). Sub DSP is capable of realizing various sound fields, such as virtual surround, by
down-loading the program and coefficient.
FEATURERS
Dolby Digital 5.1 channel full decode.
24 bit DSP. (Group-A Dolby Digital decoder)
No external memory is required. (Memory for center and surround channel delay is included)
Possible to decode multi-language encoded data. (possible to decode based on data-stream-number)
AC-3 karaoke mode.
Original compression mode as well as four compression modes recommended by Dolby.
Dolby Digital decoding latency is fixed to two audio blocks (512 samples).
Included de-emphasis filter.
Pro Logic decoding for Dolby Digital 2 channels decoded signal as well as ordinary PCM.
High performance 25 MIPS programmable DSP suitable for a variety of sound field processing such as original
surround, filtering, virtual surround etc.
Up to 1.36 second delay time is capable when used with an external 1Mbit SRAM. (at fs= 48 kHz)
Reads Dolby Digital decode information through the microprocessor interface.
Provide total sixteen I/O ports.
Possible to connect most of SPDIF receivers, A/D and D/A converters, by setting I/O data interface format.
Has a built-in PLL oscillation circuit to generates its own operating clock.
Internal operating clock is 25MHz.
Supply Voltage: 3.3v for core logic. 5v for I/Os.
Power saving mode.
Si-gate CMOS process.
100 QFP.(YSS902-F)
Note: "AC-3" and "Pro Logic" are registered trademarks of Dolby Laboratories Licensing Corporation.
Use of this LSI must be licensed by Dolby Laboratories Licensing Corporation.
YAMAHA CORPORATION
YSS902CATALOG
CATALOG No.:LSI-4SS902A3
1998. 7

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