Yamaha DVR-700, Service Manual

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DVR-700/NS-PSW700/NS-P700
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VR-70
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NS-PSW70
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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
Clock in
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.
7 XIN XIN
8 Vcc1 VDD Positive power supply for internal logic.
9 SEG34 P1I
Segment output Connect to segment (anode) pins of VFD.
10 SEG33 P2
11 SEG32 P3
12 SEG31 P4
13 SEG30 P5
14 SEG29 P6
15 SEG28 P7
16 SEG27 P8
17 SEG26 P9
18 Vcc2 VDD Positive power supply for DIG and SEG outputs.
19 SEG25 P10
Segment output Connect to segment (anode) pins of VFD.
20 SEG24 P11
21 SEG23 P12
22 SEG22 P13
23 SEG21 P14
24 SEG20 P15
25 SEG19 P16
26 SEG18 P17
27 SEG17 P18I
28 SEG16 P19
29 SEG15 P20
30 SEG14 P21
31 SEG13 P22
32 SEG12 P23
33 SEG11 P24
34 SEG10 P25
35 SEG09 P26
36 SEG08 P27
37 SEG07 P28
38 SEG06 P29
39 SEG05 P30
40 SEG04 P31
41 SEG03 P32
42 SEG02 P33
43 SEG01 P34
44 SEG00 P35
45 SEG35 P36
46 SEG36 P37
47 DIG16/SEG37 G17I
Digital output Connect to digit (grid) pins of VFD.
48 DIG15/SEG38 G16I
49 DIG14/SEG39 G15I
50 DIG13/SEG40 G14
51 DIG12/SEG41 G13
52 DIG11/SEG42 G12
53 DIG10 G11
54 DIG09 G10
55 DIG08 G9
56 DIG07 G8
57 DIG06 G7
58 DIG05 G6
59 DIG04 G5
60 DIG03 G4
61 DIG02 G3
62 DIG01 G2
63 DIG00 G1
64 VP VP Negative power supply to pull down.