Yamaha HTR-6230, Service Manual

Page: 55 / 99

RX-V365/HTR-6230
55
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
Pin No Port Name Function Name I/O Detail of Function
11 SEG32 P3 Segment output
12 SEG31 P4 Segment output
13 SEG30 P5 Segment output Positive power supply for DIG and SEG outputs
14 SEG29 P6 Segment output
15 SEG28 P7 Segment output
16 SEG27 P8 Segment output
17 SEG26 P9 Segment output
18 Vcc2 VDD
19 SEG25 P10 Segment output
20 SEG24 P11 Segment output
21 SEG23 P12 Segment output
22 SEG22 P13 Segment output
23 SEG21 P14 Segment output
24 SEG20 P15 Segment output
25 SEG19 P16 Segment output
26 SEG18 P17 Segment output
27 SEG17 P18I Segment output
28 SEG16 P19 Segment output
29 SEG15 P20 Segment output
30 SEG14 P21 Segment output
31 SEG13 P22 Segment output
32 SEG12 P23 Segment output Connect to segment (anode) pins of VFD
33 SEG11 P24 Segment output
34 SEG10 P25 Segment output
35 SEG09 P26 Segment output
36 SEG08 P27 Segment output
37 SEG07 P28 Segment output
38 SEG06 P29 Segment output
39 SEG05 P30 Segment output
40 SEG04 P31 Segment output
41 SEG03 P32 Segment output
42 SEG02 P33 Segment output
43 SEG01 P34 Segment output
44 SEG00 P35 Segment output
45 SEG35 P36 Segment output
46 DIG17/SEG36 P37 Segment output
47 DIG16/SEG37 G17I Digit output
48 DIG15/SEG38 G16I Digit output
49 DIG14/SEG39 G15I Digit output
50 DIG13/SEG40 G14 Digit output
51 DIG12/SEG41 G13 Digit output
52 DIG11/SEG42 G12 Digit output
53 DIG10 G11 Digit output
54 DIG09 G10 Digit output
55 DIG08 G9 Digit output Connect to digit (grid) pins of VFD
56 DIG07 G8 Digit output
57 DIG06 G7 Digit output
58 DIG05 G6 Digit output
59 DIG04 G5 Digit output
60 DIG03 G4 Digit output
61 DIG02 G3 Digit output
62 DIG01 G2 Digit output
63 DIG00 G1 Digit output
64 Vp VP Negative power supply to pull down
IC201: M66003-0131FP-R (OPERATION P.C.B.)
18 digit 5x7 segment VFD controller/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
When “H”, any instruction from the MCU is neglected
3 SCK CKFL Shift clock input
Serial input data is taken and shifted by the positive edge of SCK
4 SDATA DTFL Serial data input
5 Vss VSS GND (0V)
6 XOUT XOUT Clock output When use as a CR oscillator, connect external resistor and capacitor / When
7 XIN XIN Clock input use an external clock, input external clock to XIN, and XOUT must be opened
8 Vcc1 VDD Positive power supply for internal logic
9 SEG34 P1I Segment output
10 SEG33 P2 Segment output