Yamaha RX-V467 Service Manual page 102

A B C
RX-V467/HTR-4063
DIGITAL 2/4
1
Page 105 H9
to OPERATION (1)_CB401
2
3
4
R201
5 RX-V467 0
HTR-4063 1K
3.3
3.3
6
0.8
0
1.1
EEPROM
0
IC22
7
3.3 3.3
0 3.3
3.3 3.3
0 0
8
CB29
9
POINT B XL20 (Pin 20 of IC20) POINT C 1 / IC20 (143 pin, +3.3M), 2 / IC20 (19 pin, /RESET)
IC20 1
10
(+3.3M)
IC20 2
(/RESET)
AC POWER ON
(Connect the power cable)
102
D E F
Page 107 K7 Page 108 K8 Page 111
to MAIN (5)_CB157 to MAIN (1)_CB156 to VIDEO (3)_CB382
0
3.3
3.3
0
3.3
MAIN
0
0
MICROPROCESSOR
0
0
0
IC20
3.3
3.3
0
1.5
0
0.8
0
0
3.3
0
0
3.3
3.3
3.3
1.2
1.1
3.3
1 2
0
C
0.4
0
3.3
3.3
B
3.3
1.2
3.3
0
IC20 1
(+3.3M)
IC20 2
(/RESET)
AC POWER OFF AC POWER ON
(Disconnect the power cable) (Connect the power cable)
G H
I9
3.3 3.3
0
3.3
IC21
3.3
0
0
3.3
0
3.3
0
0
3.3
0
0
3.3
3.3
3.3
3.3
0
0
3.3
0
3.3
3.3
3.3
0
3.3
2.4
2.4
3.3
3.3
0
3.3
3.3
3.3
3.3
3.3 3.3
To DIGITAL 3/4
I J K
Page 110 G8
to VIDEO (1)_CB349
3.4
3.4
-11.9
3.4
3.4
-11.9
3.4
3.4
-11.9
3.4
2.7
3.3
3.4
3.4
-11.9
IC20: R5F64166DFD
Single chip 32-bit microprocessor
8 8 8
Port P0 Port P1 Port P2 Port P3
Peripheral functions
A/D converter:
10 bits × 1 circuit
Timer:
Standard: 10 inputs
Timer A 16 bits × 5 timers
Maximum: 34 inputs
Timer B 16 bits × 6 timers
Three-phase motor
D/A converter:
controller
8 bits × 2 channels
Serial interface:
9 channels X-Y converter:
16 bits × 16 bits
Multi-master I 2 C-bus
CRC calculator (CCITT)
Interface:
X 16 + X
1 channel
Intelligent I/O R32C/100 Series Microprocessor Core
Time Measurement: 16
R2R0
Wave generation: 24 R2R0
R3R1
Serial interface:
R6R4
- Variable-length
R7R5
synchronous serial I/O
A0
- IEBus (1)
A1
A2
A3
FB
SB
Port P15 Port P14 Port P14_1
8 4
Note:
1. IEBus is a trademark of NEC Electronics Corporation.
To DIGITAL 4/4
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
L M N
To DIGITAL 1/4
3.3
0 IC22: LE25LA322M-TLM-E
3.3
32 k-bit serial SPI EEPROM
0.6
0
Writing port
0
X ·
EEPROM
3.3
ADDRESS DECODER
Cell Array
3.3 BUFFERS
and
3.3
LATCHES
CB27
Y ·DECODER
CB26
CONTROL I/O BUFFERS
and
LOGIC
DATA LATCHES
SERIAL INTERFACE
CS# SCK SI SO WP# HOLD#
CS# 1 8 VDD
SO 2 7 HOLD#
WP# 3 6 SCK
VSS 4 5 SI
8 8 8 8
IC21: R1172H331D-T1-F
Voltage regulator
Port P4 Port P5 Port P6
Clock generator:
4 circuits
- XIN-XOUT
V V
DD 4 5 OUT
- XCIN-XCOUT
- On-chip oscillator
- PLL frequency synthesizer
Watchdog timer:
15 bits
DMAC
Vref
12 + X 5 + 1 DMAC II
Current Limit
CE 1 2 GND
Memory
ROM
FLG
INTB
ISP
RAM
USP
Pin No. Symbol Description
PC
SVF
1 CE Chip Enable Pin
SVP Multiplier
VCT 2 GND Ground Pin
Floating-point unit 3 NC No Connection
4 V DD Input Pin
5 V OUT Output Pin of Voltage Regulator
Port P13 Port P12 Port P11
8 8 5
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
and must be replaced ● 印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。