器件名称: YSS902
功能描述: Dolby Digital (AC-3) / Pro Logic decoder + Sub DSP
文件大小: 597.75KB 共12页
简 介:YSS902
AC3D
Dolby Digital (AC-3) / Pro Logic decoder + Sub DSP
INTRODUCTION
The YSS902 is one chip LSI consisting of two built-in DSP’s ; 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. Suppl……
