Yamaha RX-V461 Service Manual page 68

A B C
RX-V461/HTR-6040/RX-V461DAB
DSP 2/6
1
Q Q
3
2
3
4
5
to DSP 5/6
T E
L 1 3
to DSP 1/6
6
7
RE04410 RE04433 RE04410
10x4 33x4 10x4
8
9
w w w
10
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# 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.
68
D E F
7 1 5
6 3
3.3
3.3
3.3 IC203
0
3.3
3.3 IC203
0
0
3.3
1.1
3.3
3.3
3.3
0
0
0
IC203
0
0
3.3
3.3
3.3 IC203
0
FLASH ROM
0 0
0 3.3
0 0
2.7 2.5
0.7 0.4
0.7 2.2
1.8 0.4
9 4 2 2 9 6 5 1 3
1.9 2.3
0 0.4
2.3
3.3 0.4
3.3 3.3
2.2
0.4
0 2.0
0 0.4
1.1 2.0
1.8 0.3
1.8 2.1
1.7 0
1.7 3.3
0
1.9
1.9 3.3
3.0 1.0
IC201: S29AL016D70TFI020
16 M-bits CMOS 3.0 volt-only boot sector flash memory
DQ0–DQ15 (A-1) A15
RY/BY#
A14
V
CC
Sector Switches A13
V
SS
A12
A11
Erase Voltage Input/Output A10
RESET# Generator Buffers
A9
A8
A19
NC
State
WE# WE#
Control
BYTE# RESET#
Command NC
NC
Register
PGM Voltage RY/BY#
Generator A18
A17
Chip Enable Data
STB Latch A7
Output Enable
CE#
Logic A6
OE# x a o
A5
A4
A3
A2
. i
A1
Y-Decoder Y-Gating
STB
V Detector
CC Timer
X-Decoder Cell Matrix
A0–A19
G H
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1 5
0
to DSP 1/6
SDRAM
2.5 3.3
2.2 3.3
3.3
2.3
2.3 3.3
2.2 3.3
3.3
2.0
2.0 3.3
2.1 0
0.4 0
0.4 0 EXTENDED PORT
0.4 0
0.4 0
0.4 0
0.4 0
0.3
0
0
1.1
0.7
1.1
3.3
1.8
0
0
1.9
0
1.8
0.3
3.2
1.8
0.4
3.3
1.7
0.4
3.3
1.7
0.4
3.3
1.9
0.4
1.9
0.4
1.8
3.0
0.4
3.4
1 .0
0
0
2.1
2.0
2.0
2.2
2.3
2.3
2.2
Q Q 2.5
3 7
0
0
0
0.3
0.4
0.4
0.4
0.4
0.4
0.4
0
0
2.1
2.0
2.0
2.2
2.3
2.3
2.2
2.5
0
IC202: W9864G6EH-7
1 M x 4 banks x 16-bit SDRAM
1 48 A16 CLK
CLOCK
2 47 BYTE# BUFFER
3 46 V SS
CKE
4 45 DQ15/A-1
5 44 DQ7
6
43 DQ14 CS
7 42
DQ6
RAS
8 41 DQ13
9 40 DQ5 CAS
10 39 DQ12
WE
11 38 DQ4
12 37 V CC
13 36 DQ11
A10
14
35 DQ3
15 34 DQ10
MODE
A0
16 33 DQ2 REGISTER
17 32 DQ9 A9
A11
18 31 DQ1 BS0
BS1
19 30 DQ8
u 1 6 3
20 29 DQ0
y
21 28 OE#
22 27 V
SS
23 26 CE#
24 25 A0
REFRESH COLUMN
COUNTER COUNTER
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I J K
2 4
8 9
to DSP 5/6
3.3
3.3
to DSP 5/6
3.3
3.3
3.3 to DSP 4/6
3.3
1.7
to DSP 4/6
1.7
3.3
0
to DSP 5/6
3.3
0
0
3.3
3.3
0
to DSP 3/6, 4/6, 6/6
0
3.3
0
6 3 1 5 1 5 0 8
to DSP 4/6
0
to DSP 6/6
3.3
0
3.3
0
3.3
0
3.3
0
3.3
0
3.3
0
3.3
to DSP 6/6
3.3
0
3.3
3.3
3.3
0
to DSP 3/6
0
IC203: SN74AHC02PWR
Quadruple 2-input positive-NOR gates
1Y 1 14 Vcc
4Y
1A 2 13
4B
1B 3 12
2Y 4A
4 11
COLUMN DECODER COLUMN DECODER
2A 3Y
5 10
2B 6 9 3B
CELL ARRAY CELL ARRAY
BANK #0 BANK #1
GND 7 8 3A
SENSE AMPLIFIER SENSE AMPLIFIER m
c o
DQ0
DATA CONTROL DQ
CIRCUIT BUFFER
DQ15
.
UDQM
LDQM
COLUMN DECODER COLUMN DECODER
CELL ARRAY CELL ARRAY
BANK #2 BANK #3
SENSE AMPLIFIER SENSE AMPLIFIER
L M N
2
9 8 9 9
to DSP 1/6
to DSP 3/6
to DSP 4/6
9 2 4 9 8 2 9 9
to DSP 3/6, 4/6
to DSP 4/6
to DSP 5/6
IC208: SN74AHC08PWR
Quadruple 2-input positive-AND gates
1A 1 14 Vcc
to DSP 4/6
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
2Y 6 9 3A
GND 7 8 3Y
IC204-207: SN74LV573APWR
Octal 3-state D-latches with 3-state outputs
1
OE
OE 1 20 V
CC
11 1D 2 19
LE 1Q
2D 3 18 2Q
C1 19
3D 4 17
2 1Q 3Q
1D
1D
4D 5 16 4Q
5D 6 15 5Q
6D 7 14
6Q
7D 8 13 7Q
8D 9 12 8Q
C8 12
GND 10 11 LE
8Q
9
8D 8D