Yamaha Digital Sound Projector YSP-900, Service Manual

Page: 55 / 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-900
55
★
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-2 pin 29 of IC4
SCHEMATIC DIAGRAMS
DSP 1/3
3.4
3.3
3.3
2.6
2.6
3.4
0 3.3
3.2
3.2
1.2
1.2
4.8
3.3
1.7
1.7
1.7
5.0
0
2.5 2.5
2.5
5
.0
5.0
2.5
0
1.7
2.5
2.5
2.5
0
0
3.2 3.2
3.4 0.1
10.1
10.1
1.3 2.6
6.8
0
3.4
10.1
10.1
1.3 2.6
6.8
0
2.6
10.1
10.1
1.3 1.4
0
6.8
0
1.4
1.4
1.4 3.4
3.4
3.4
1.4
1.4 3.3 3.3 3.3 3.3 3.3 1.4
3.4 3.4 3.4
0 0
0
0 0
1.4
3.2 3.4 1.4 1.4 0 0 0
0
3.4 1.4
3.4
1.7
3.4
3.4
0
1.4
3.3
3.4
0
0
0
0
1.6 0
0
0
3.4
3.4
3.4
0
0
0
0
0
0
0
0
0.1
0.1
0.1
1.4
1.7
1.7
3.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4 1.4 1.4 2.7 2.5 2.9
3.3
3.3 3.3
1.7
1.4 3.4 1.4 1.4 0.3 3.4 3.4 3.3
3.3 1.4
1.8 3.4 3.4 3.4 3.3 3.4 3.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1.4
3.4
0
0
0
2.6
3.1
3.3
3.4
3.4
3.4
3.3
0
1.7
1.7
1.2
3.3
3.4
3.4
1.7
1.7
1.4
1.4
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
1.4
0
5.2
3.4
3.4
3.4
3.4
1.4
0
3.3
3.3
0.7
1.3
0
0
0
0
0
1.3
1.4
0
0
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.4
0.3
0
0
0
0
0
3.4
3.3
3.2
3.2
3.2
3.2
3.2
1.7
3.3
2.9
2.6
1.7
2.7
3.2
3.4
3.4
3.4
0
0
0
0
0
0
0
3.4
3.4
3.4
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.3
3.3
3.3
3.3
0
0
3.2
0
0
0
0.3
0
3.3
0
0
0
0
2.9
2.6
1.7
2.7
3.3
3.3
0
0
2.5
0
0
0
0
0
0
0.3
5.0
3.2
3.4
3.4
0
0
0
3.4 3.2 3.3 3.3 2.6 0 0
1.6
1.6
1.6
3.4
3.4
0
0
0 0
0 0
0
3.4
3
.3
3.3 3.3 3.3 3.4
3.4
1.6 1.7 1.7 1.7
3.4
3.4
1.7 1.7 1.7
0
0
0
0
A-2
DSP
DIR
DSP1
F.F
DRAM FLASH
No replacement part available.
サービス部品供給なし
Voltage
regulator
Overcurrent
detection
circuit
Overheat
detection
circuit
ON/OFF
circuit
Q
R
S
F/F
2
5
4
1
3
COM
PWM COMP.
V
IN
V
OUT
ON/OFF
control
O
adj
V
ref
ERROR AMP.
Soft start
Oscillator
IC1-3 : PQ1CZ41H2Z
Chopper regulators
Input
Selector
RXOUT
RX0
RX1
RX2
RX3
RX4
RX5/VI
RX6/UI
LPF
TMCK/PIO0
TBCK/PIO1
TLRCK/PIO2
TDATA/PIO3
TXO/PIOEN
Cbit, Ubit
Microcontroller
I/F
Data
Selector
Clock
Selector
Modulation
&
Parallel Port
PLL
XIN XOUT XMCK CKST
SLRCK
SBCK
RLRCK
RBCK
RMCK
SDIN
RDATA
RERR
DO
XMODE CI CE CL INT AUDIO/VO EMPHA/UO
1/N
Demodulation
&
Lock detect
1
2
3
4
5
8
9
10
13
44
45
46
47
48
29 28 27 34
23
22
20
17
16
24
21
36
37
41 38 39 48 35 33 32
IC4 : LC89057W-VF4D-E
Digital audio interface transceiver
Pin Multiple
xing
EMIF32
L1P Cache
Direct Mapped
4K Bytes Total
Digital Signal Processors
L1D Cache
2-Way Set
Associative
4K Bytes Total
Clock Generator,
Oscillator and PLL
x4 through x25 Multipliers
/1 through /32 Dividers
Power-Down
Logic
Instruction Fetch
Instruction Dispatch
Instruction Decode
Data Path B Data Path A
B Register File
Control
Registers
C67x TM CPU
Control
Logic
In-Circuit
Emulation
Interrupt
Control
Test
A Register File
.L1t
McASP1
McASP0
McBSP1
McBSP0
I2C1
I2C0
Timer 1
Timer 0
.S1t .M1t .D1 .D2 .M2t .S2t .L2t
GP1
GP0
HPI16
Enhanced
DMA
Controller
(16 channel)
L2 Cache/
Memory
4 Banks
64K Bytes
Total
(4-Way)
L2
Memory
DA610:
192K Bytes
DA601:
64K Bytes
R2 ROM
512K
Bytes
Total
IC5 : D60YA003BPYP225
Decoder
1 DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
Vcc
OE
B1
B2
B3
B4
B5
B6
B7
B8
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
IC8 : SN74LV245APWR
Octal bus transceivers with 3-state outputs
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1CLR
1D
1CLK
1PRE
1Q
1Q
GND
VCC
2CLR
2D
2CLK
2PRE
2Q
2Q
TG
C
C
TG
C
C
TG
C
C
C
TG
C
C
PRE
CLK
D
CLR
Q
Q
C
IC7 : SN74LVC74APWR
Dual positive-edge-triggered D-type flip flops
9
5
10
7
8
1 14
13
3
12
2
6 4 11
AVDD
CAP
AGND
RIN
LIN
DVDD DGND
SDATO
LRCLK
BCLK
MCLK
VREF FMT NOHP
ADC
ADC
DIGITAL
FILTERS
AUDIO
INTERFACE
CONTROL
INTERFACE
IC10 : WM8738
24bit stereo ADC
IC9 : W9816G6CH
512K x 2 banks x 16 bits SDRAM
CLOCK
BUFFER
ADDRESS
BUFFER
CLK 35
18
CKE 34
A10 20
CS
17 RAS
16 CAS
15 WE
21 A0
〜
24 A3
27 A4
〜
32 A9
19 BA
2 DQ0
3 DQ1
5 DQ2
6 DQ3
8 DQ4
9 DQ5
11 DQ6
12 DQ7
39 DQ8
40 DQ9
42 DQ10
43 DQ11
45 DQ12
46 DQ13
48 DQ14
49 DQ15
14 LDQM
36 UDQM
COMMAND
DECODER
REFRESH
COUNTER
REFRESH
COUNTER
DQ
BUFFER
COLUMN
COUNTER
MODE
REGISTER
CONTROL
SIGNAL
GENERATOR
CELL ARRAY
BANK #0
R
O
W
D
E
C
O
D
E
R
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #1
R
O
W
D
E
C
O
D
E
R
COLUMN DECODER
SENSE AMPLIFIER
Y 4
B 2
GND 3
IC6 : SN74AHC1G08DCKR
2-input positive-AND gate
Vcc 5 A 1
A1
A15
NC
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE#
RESET#
NC
NC
RY/BY#
A17
A7
A6
A5
A4
A3
A2
1
16
2
3
4
5
6
7
8
17
18
19
20
21
22
23
24
9
10
11
12
13
14
15
A16
DQ2
BYTE#
V
SS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ9
DQ1
DQ8
DQ0
OE#
V
SS
CE#
A0
DQ5
DQ12
DQ4
V
CC
DQ11
DQ3
DQ10
48
33
47
46
45
44
43
42
41
40
39
38
37
36
35
34
25
32
31
30
29
28
27
26
IC11 : S29AL004D70TFI020
4M-bit COMS 3.0 volt-only boot sector flash memory
Input/Output
Buffers
X- Decoder
Y-Decoder
Chip Enable
Output Enable
Logic
Erase Vo ltage
Generator
PGM Voltage
Generator
Timer
V
CC
Detector
State
Control
Command
Register
V
CC
V
SS
WE#
BYTE#
CE#
OE#
STB
STB
DQ0–DQ15 (A-1)
Sector Switches
RY/ BY#
RESET#
Data
Lat ch
Y- Gating
Cell Matrix
Ad
dr
es
s L
a
tc
h
A0–A17