Yamaha RX-V2065 Service Manual page 74

RX-V2065/HTR-6295
IC402: M66003-0131FP (OPERATION P.C.B.)
FL display driver
Pin No. Port Name
1 RESET
2 CS
3 SCK
4 SDATA
5 Vss
6 XOUT
7 XIN
74
Serial
CS 2
data
receive
SCK 3
circuit
SDATA 4
XIN 7
Clock
timing
generator clock
XOUT
6
RESET 1
Vcc1 8
Vcc2
18
Vss 5
Vp 64
RESET
CS
SCK
SDATA
Vss
XOUT
XIN
Vcc1
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
Function Name I/O
/RESET Reset input
/CEFL Chip select input When "L" , communication with the MCU is possible.
CKFL Shift clock input When "H" , any instruction from the MCU is neglected.
DTFL Serial data input
VSS
XOUT Clock out
XIN Clock in
Display code
CGROM
RAM
(35-bit x 166)
(8-bit x 60)
Code
write
CGROM
dot data
(35-bit x 16)
write
Code/
command
control
circuit
code
select
Display
scan pulse
controller
Detail of Function
When "L" , M66003 is initialized.
Serial input data is taken and shifted by the positive edge of
SCK.
GND (0V)
When use as a CR oscillator, connect external resistor and
capacitor.
When use an external clock input external clock to XIN, and
XOUT must be opened.
44 SEG00
Segment 19 SEG25
output
17 SEG26
circuit
9 SEG34
45 SEG35
DIG11/
52
SEG42
DIG12/
51
SEG41
Segment/
DIG13/
50
Digit
SEG40
select/
DIG14/
49
output
SEG39
circuit DIG15/
48
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
output
circuit
53 DIG10
DIG15/SEG38
DIG16/SEG37
DIG17/SEG36
SEG35
SEG00
SEG01
SEG02
SEG03
SEG04
SEG05
SEG06
SEG07
SEG08
SEG09
SEG10
SEG11