Denon AVR-2106 - Page 21

21
AVR-2106/886
LC74781 (IC1006)
1
2
3
4
5
6
7
8
9
10
11
12
V
SS1
Xtal
IN
Xtal
OUT
CTRL1
BLANK
OSC
IN
OSC
OUT
CHARA
CS
SCLK
SIN
V
DD2
24
23
22
21
20
19
18
17
16
15
14
13
V
DD1
RST
CTRL3
CTRL2
SEP
IN
SEP
OUT
SEP
C
SYN
IN
V
DD1
CV
IN
NC
CV
OUT
CS
9
RST
23
VSS1
1
SIN
11
SCLK
10
OSCIN
6
OSCOUT
7
SYNIN
17
SEPC
18
SEPOUT
19
CHARA
8
VDD2
12
SEPIN
20
CTRL3
22
4
CTRL1 XtalIN XtalOUT BLANK CVIN CVOUTCTRL2
21 2 3 5 15 13
VDD1
24
Serial
parallel
converter
8-bits
latch
+
command
decoder
Horizontal
character
size
register
Horizontal
size
counter
Horizontal
display
position
register
Horizontal
dot
counter
Vertical
display
position
register
Vertical
dot
counter
Blinking
and inversion
control
register
Blinking
and inversion
control
circuit
Blinking
and inversion
control
register
Blinking
and inversion
control
register
Character
control
counter
Line
control
counter
Timing generator
Synchronization
signal generator
Character output control
Background control
Video output control
Display
control
register
RAM
write
adress
counter
Display
RAM
Vertical
character
size
register
Vertical
size
counter
Decoder
Font
RAM
Shift
register
Decoder
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
LC74781 Trminal Function
Pin No. Symbol Name
1 VSS1 GND
2 Xtal IN Xtal oscillation
3 Xtal OUT Xtal oscillation
4 CTRL1 Xtal oscillation input switching
5 BLANK Blank output
6 OSC IN LC oscillation
7 OSC OUT LC oscillation
8 CHARA Character output
9 CS Enable input
10 SCLK Clock input
11 SIN Data input
12 VDD2 Power
13 CV OUT VIDEO signal output
14 NC
15 CV IN VIDEO signal input
16 VDD1 Power
17 SYN IN Sync. separate circuit input
18 SEP C Sync. separate circuit bias voltage
19 SEP OUT Complex sync. signal output
20 SEP IN Vertical sync. signal input
21 CTRL2 NTSC/PAL-M switching input
22 CTRL3 SEP IN input control
23 RST Reset input
24 VDD1 Power (+5V)
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