Yamaha YSP 800 - Digital Sound Projector Five CH..., Service Manual

Page: 57 / 82

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
YSP-800
SCHEMATIC DIAGRAM (DSP 3/3)
57
★
All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
★
Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
POINT A-3 pin 13 of IC24
DSP
MPU
DAC
SW
EEPROM
MICROPROCESSOR
INTERFACE
EXTERNAL RAM
INTERFACE
CONTROL REGISTER
SDBCK
O
MPLO
AD
/CS SO SI SCK IOPOR
T
19~0
CASN RASN
RAMWEN
RAMOEN
SDO0
SDI0
SDI1
SDI2
SDI3
SDI4
SDI5
SDI6
SDI7
SDBCK
SDWCK
XO
XI
CPO
SDI INTERF
A
C
E SDO1
SDO2
SDO3
SDO4
SDO5
SDO6
SDO7
32 bit DSP Core
PLL
DSP INTERNAL
OPERATING CLOCK
CK (30.72~40.96MHz)
COEFFICIENT
RAM
16 bit ＊ 1024 word
PROGRAM
RAM
50 bit ＊ 1024 word
ADDRESS
RAM
17 bit ＊ 256 word
CONTROL
SIGNALS
RAMD15~0 RAMA17~0
BCK
OP
SD
WCK
O
WCK
O
P
OV
F
END
D
ATA
R
A
M
32 bit
＊
1024
word
SDO INTERF
A
C
E
ZER
OF7R-0L
BCKIN
LRCIN
DIN
MCLK DVDD AVDD
MUTEB SDIDEM SCKDSD LATI2S MODE CSBIWL ZERO
VOUTL
VOUTR
VMID
AGND DGND VREFP VREFN
16 15
14
20 19 18 17 5
6 7
1
2
3
4 13
12
11
8
9 10
IC20, 22 : WM8728
24bit, 192kHz Stereo DAC
CS
SK
DI
DO
1
2
3
4
8
7
6
5
VCC
NC
TEST
GND
IC21 : S-29630AFJA
CMOS SERIAL EEPROM
Memory array
Address
decoder
Data register Output buffer
Mode decode logic
Clock generator
VCC
GND
DI
SK
CS
DO
IC18, 19 : YSS930-SZ
DSP
P
age 59
to INPUT(2)_CB3
E6
P
age 59
to INPUT(3)_CB902
G7
P
age 60
to INPUT(1)_CB507
J6
P
age 58
to AMP_CB702
D2
3.4 3.3 3.2 3.4 0.1 3.4 1.6 0.1 0 0 3.3
3.4 3.4 3.2 3.2 1.5 0 1.6
3.2
3.2 3.2 0 0 3.2 3.1 1.2 0 0 3.2 3.2
3.2 3.2
3.3
0
0
3.2
3.2
0
0
0
0
0
0
3.0
3.2
3.2
3.4
0
0
3.2
3.3
0 0.4
0 0
0
0
0 0
0.4
0 0 0
3.2 3.2
0
3.2 3.4 3.2
0 0 0
3.2
0
3.2 3.4
0 0 0
3.3
0
3.1
0 0 0
3.2
0
3.2
3.3
0.1
0
3.3
3.3
3.3
0
3.3
3.3
3.0
0
0
0
0
0
0
0
3.2
3.3
3.3
3.3 3.3
0
0
3.3
3.2
1.7
1.7
1.7
3.3
2.0
5.0
0
0
1.6
3.2
3.3
4.1
0
0
0
2.1
2.1
0
3.3
1.7
1.7
1.7
3.3
0
0
0
5.0
0
0
0
0
2.4
2.4
3.2
3.3
4.8
0
3.3
3.2
3.1
2.6
3.3
3.2
1.7
1.7
0.7
0
0
0
1.7
1.7
1.7
2.5
0.9
2.5
3.3 3.3
0
2.5
3.3
1.6
1.7
1.7
0.7
1.5
1.5
1.5
1.5
1.5
1.5
0
0
0
0
0 0 0 0
2.5
1.1 2.5 3.3
1.7
0
2.5
3.3 3.3
0
2.5
3.3
1.5
1.5
1.5
1.5
1.5
0
1.7
1.7
3.3
3.2
3.1
2.6
3.3
3.2
1.7
1.7
1.7
1.7
2.5
0.7
0
0
0
1.1 2.5 3.3
3.3
0 0 0
2.5
0
1.7
0
0
0
0.9
A-3
B-1
2
1