YSS215 North Block Diagram

 The Dolby Pro Logic decoding chip produced by Yamaha, which has always been at the forefront of audio technology, has unique functions and outstanding performance
. It has a unique new cinema interpretation sound field processing system with very good results. Here is a brief introduction to two chips: VI strong 15
and YSS241.
    1 - YSS215 Dolby Pro Logic Sound Field Processor
    VI Process 15 Large Scale Integrated Circuit is a digital sound field processor with Dolby Pro Logic decoder. Its main features are:
    (1) Built-in 32bit high-precision signal processor.
    (2) Built-in automatic input balance circuit and all Dolby surround decoding circuits, using digital signal processing internally
    (3) In Dolby Pro Logic surround mode, it has 370ms delay and 8 sets of tap delay line mixing capabilities.
    (4) The digital delay function with 29 groups of tap delay line structures can form an original sound field processor.
    (5) Has front surround channels .
    (6) Use microcontroller control.
    The main parameters of YSS215 are as follows:
    YSS215 adopts 64-pin Q] positive flat package.
Voltage range: 4. 75～5-25V, rated voltage : Sv
Static power consumption: 2 50rnW, output distortion: main channel: 0.03%, surround channel: 0.25%
Output signal-to-noise ratio: main channel greater than 85dB, surround Channel 77dB.
Input level : 300mVo
Frequency response: main channel 50Hz~20kHz±0-2dB.
Channel separation: 30cB.
Noise output level : 85dBo