Yamaha RX-V465 Service Manual

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RX-V465/HTR-6240/
AX-V465
RX-V465/HTR-6240/AX-V465
52
Display
controller
Serial
receive
circuit
Digit
output
circuit
Clock
generator
DIG11/
SEG42
51
DIG12/
SEG41
50
DIG13/
SEG40
49
DIG14/
SEG39
48
DIG15/
SEG38
47
DIG16/
SEG37
46
DIG17/
SEG36
45
SEG35
XOUT
6
Vcc1
8
Vcc2
18
Vss
5
Vp
64
XIN
7
CS
SCK
3
SDATA
4
RESET
1
SEG00
44
9
SEG34
SEG26
17
19
SEG25
Segment
output
circuit
Display code
RAM
(8-bit x 60)
CGROM
(35-bit x 166)
CGROM
(35-bit x 16)
code
select
Code
write
Code/
command
control
circuit
DIG00
63
53
DIG10
2
data
timing
clock
dot data
write
scan pulse
RESET
SCK
SDATA
XOUT
XIN
Vcc1
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
Vcc2
Vss
CS
SEG11
SEG10
SEG09
SEG08
SEG07
SEG06
SEG05
SEG04
SEG03
SEG02
SEG01
SEG00
SEG35
DIG17/SEG36
DIG16/SEG37
DIG15/SEG38
DIG14/SEG39
DIG13/SEG40
DIG12/SEG41
DIG11/SEG42
DIG10
DIG09
DIG08
DIG07
DIG06
DIG05
DIG04
DIG03
DIG02
DIG01
DIG00
VP
Segment/
Digit
select/
output
circuit
IC402: M66003-0131FP (OPERATION P.C.B.)
FL display driver
Pin No. Port Name Function Name I/O Detail of Function
1 RESET /RESET Reset input When “L, M66003 is initialized.
2 CS /CEFL Chip select input When “L, communication with the MCU is possible.
3 SCK CKFL Shift clock input When “H”, any instruction from the MCU is neglected.
4 SDATA DTFL Serial data input
Serial input data is taken and shifted by the positive edge of
SCK.
5 Vss VSS GND (0V)
6 XOUT XOUT Clock out
When use as a CR oscillator, connect external resistor and
capacitor.
7 XIN XIN Clock in
When use an external clock input external clock to XIN, and
XOUT must be opened.