Yamaha Clavinova CVP-96 Service Manual page 38

CVP-96/CVP-98
• SED1335F0B (XO595A00) LCDC (LCD Controller)
PINN
NAME
1/0 FUNCTION
PIN
NAME 1/0 FUNCTION
o.
NO.
1 VA5 0 31 XD2
0
}
2 VA4
0
32
XD1
0
X driver data bus
3 VA3
0
VRAM address bus 33
XD0 0
4 VA2
0
34 XECL
0
X driver enable chain clock
5
VA1 0
35
XSCL
0
X driver shift clock
-6
VA0
0
36
vss
Ground
7 VR/W
0
VRAM write strobe 37 LP
0
Latch pulse
8 NCE
0
VRAM chip enable 38 WF
0
Frame signal
9
NC 39 YDIS 0 LCD power down
10 /RES I Reset 40 YD
0
Scan start pulse
11 NC 41 YSCL
0
Scan shift clock
12 NC 42 VD7 1/0
13 /RD
I 80: Read strobe, 68: E clock 43 VD6 1/0
14
/WR
I 80: Write strobe, 68: Read/Write 44
VD5
vo·
15 SEL2 I
J
CPU 80/68 bus select 45 VD4
1/0
VRAM data bus
16 SEL1 I 46 VD3
1/0
17
OSC1 I Clock 47 VD2 1/0
18 OSC2
0
48
VD1 1/0
19 /CS I Chip select 49 VD0
1/0
20 AO I Data bus signal discrimination 50 VA15
0
21 · VDD Power supply 51 VA14
0
22 DO
1/0 52 VA13
0
23
D1 1/0
53
VA12
0
24 D2
1/0
54
VA11
0
VRAM address bus
25
· D3
1/0
55
VA10 0
26 D4
1/0
Data bus 56 VA9
0
27 D5
1/0
57 VAS
0
28 D6
1/0
58 VA7
0
29 D7
1/0
59 VA6
0
30 XD3
0
X driver data bus 60 NC
• YMZ702-D (XR632A00) KSN2 (Key Scanner)
PIN
NAME
NO.
1/0
FUNCTION
PIN
NAME
NO.
1/0 FUNCTION
1 BK5
0
21 GND Ground
2 BK4
0
22 VDD Power supply
3 BK3
0
Key block (open drein) 23
so
0
Serial data
4 BK2
0
24 ACK
I
Acknowledge/mode select
5
BK1 0 25 XCK I
Clock for serial data
6 BK0
0
26
/IC
I
Initial clear
7 MK15 I 27 TST1 I
Test mode
8 MK14
I
28 TST2
I
(L,L: normal mode, others: test)
9
MK13 I First make contact 29 XCKINH I
Inhibit of serial clock
10 MK12
I
30 BK14
0
11 MK11 I 31 BK13 0
12 MK10 I 32 BK12
0
13
MK05 I
I
33
BK11 0
Key block (open drein)
14 MK04 I 34 BK10
0
15 MK03 I
Second make contact
35 BK9
0
16 MK02 I 36 BK8
0
17 MK01 I
37
BK7 0
18 MK00 I 38 BK6
0
19 XIN I Crystal osc. input (4 MHz)
39
GND
Ground
20 XOUT
0
Crystal osc. output (4 MHz) ·- 40 VDD Power supply
43