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PDF YSS915 Data sheet ( Hoja de datos )
| Número de pieza | YSS915 | |
| Descripción | Karaoke Processor 2 for Video disc player | |
| Fabricantes | ETC | |
| Logotipo |  |
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YSS915
Karaoke Processor 2 for Video disc player
(KP2V2)
INTRODUCTION
YSS915 (KP2V2) is an LSI for processing Karaoke voice signals.
This LSI has an A/D converter (1 channel) for the microphone echo, and a memory for the microphone echo and
key control. These features allow achieving the functions needed for the Karaoke system by using only one LSI
chip. As for the microphone echoes, many other types of echoes are available in addition to ordinary ones so that
YSS915 is applicable to various uses.
In addition to these Karaoke programs, YSS915 is able to provide the Movie & Music programs, with which the
surround effect is applied to the movie and music sources for giving the users more enjoyment.
YSS915 is pin compatible with and register compatible with YSS903 (KP2V).
FEATURES
[ Fundamental Functions ]
1) Karaoke program
• Key Control (Control by 50 cents in +/- 600 cent range, +/- one octave, etc.)
• Voice Cancel
Microphone Echo
• Normal microphone echo (174 msec or less (fs = 44.1 kHz))
• Stereo-Echo/ Reverb-Echo
• Microphone Key Control (+/- 10 cents, +/- 20 cents, +/- 400 cents, +/- 700 cents and +/- 1 octave)
• Microphone "YMERSION™"
Tone Control
• Bass, Mid-tone, Treble (0 to +/- 10 dB at 2 dB steps)
Surround
• "YMERSION™" (Yamaha's original wide surround technology)
2) Movie and music program
Surround
• Initial reflection sound synthesizing system
• Yamaha "YMERSION™"
Tone Control
• Bass, Mid-tone, Treble (0 to +/- 10 dB at 2 dB steps)
[ I/O Interface ]
• Digital signal inputs
: 2 channels (16/18/20/24 bits)
• Digital signal outputs : 2 channels (16/18/20/24 bits)
• Analog signal input
: 1 channel ( for the microphone )
• Microprocessor interface : Serial four line system
• Through-mode
: Digital input is outputted without any processing
(Correspond with fs = 96 kHz 24 bit DVD format)
[ Others ]
• Pin/register upper compatible with YSS903 (KP2V)
• Sampling frequency
: 32, 37.8, 44.1, 48 kHz or correspond with 96 kHz through-mode.
• Package
: 28 pin SOP ( YSS915-M )
YAMAHA CORPORATION
YSS915
CATALOGUE No:LSI-4SS915A2
1999.09
1 page  
YSS915
BLOCK DIAGRAM
This LSI has two input channels (L and R) and two output channels (L and R) for digital audio interface. It also has a
one bit Delta-Sigma type AD converter 1 channel (microphone) that performs Delta-Sigma modulation at its analog
block, and decimation/interpolation of 128 times at its DSP.
Karaoke audio signal is processed by DSP for processing Karaoke audio signal and RAM for delay.
For the details of Karaoke audio signal processing, please refer to "OPERATIONS".
The parameters of this LSI are set through CPU interface. For the details of the parameters, please refer to
"REGISTERS".
DEPI
/CS
CDI
/SCK
CDO
P0
KP2V2
CPU interface
SDSY,DI,BCI
DO,L/R,BCO
ZERO
MICIN
AOL
AOR
VREF
Digital I/O
Interface
Analog block
DSP
ADC1 ADC2
RAM
for delay
Program ROM
Clock
generator
/IC
XISEL
XI PLLC
MODES
Name of mode
KP2
standard mode
KP2V
extended mode
Code
Description
The functions of KP2 (YSS216B) can be used. The registers are compatible, except that
N the coefficient registers (addresses $27 and $30 to $33) of KP2 that controls the analog
audio input and analog microphone echo output cannot be used because YSS903 does not
have these ports.
E Every function of this device can be used.
5
5 Page 
OPERATIONS
Process flow chart
1. Karaoke program
Flow of signal in processing Karaoke audio signal in this LSI is as described by the following diagram.
The Karaoke program can be used in both KP2 standard mode or KP2V extended mode.
In KP2 standard mode, the same functions as those of KP2 can be used, and most of the registers of KP2V and KP2 are compatible with each other,
except that the registers related to analog audio input and analog microphone echo output cannot be used because KP2V does not have these functions.
In KP2V extended mode, every function of the Karaoke program can be used.
Mono-echo, stereophonic echo, 3 D echo and super 3D echo provided in the evaluation board can be obtained by combining the
following microphone echo/Reverb echo, microphone key control and/or microphone YMERSION functions appropriately.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet YSS915.PDF ] | |
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