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Denon AVR-4208 Service Manual page 18

Av surround receiver/ amplifier

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3 7 63 1515 0
M35015-210SP (IC416)
1
OSC1
2
OSC2
3
CS
4
SCK
SIN
5
AC
6
V
7
DD2
CVIDEO
8
LECHA
9
CVIN
10
M35015-210SP Terminal Function
Pin No.
Symbol
1
OSC1
Osc. circuit ext.
TE
2
OSC2
terminal.
L 13942296513
3
CS
Chip select input
4
SCK
Serial clock input
5
SIN
Serial data input
6
AC
Auto-clear input
7
V
Power supply
DD2
Combined
8
CVIDEO
video output
Character level
9
LECHA
input
Combined video
10
CVIN
input
11
Vss
Ground
12
P0
Output port p0
13
P1
Output port P1
14
P2
Output port P2
15
P3
Output port P3
Ext. terminal
www
16
OSCOUT
for sync sig.
17
OSCIN
OSC. Circuit
Horizontal sync
18
HOR*
signal
.
Vertical sync
19
VERT*
signal
20
V
Power supply
DD1
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3
CS
INPUT
SCK
CONTROL
4
CIRCUIT
5
SIN
20
V
DD1
19
VERT*
DATA
ADDRESS
CONTROL
CONTROL
18
HOR*
CIRCUIT
CIRCUIT
17
OSCIN
16
OSCOUT
INDICATION
CONTROL
15
P3
REGISTER
14
P2
13
P1
12
P0
11
Vss
INDICATION RAM
V
20
DD1
6
AC
V
11
SS
INDICATION CHARACTER ROM
V
7
DD2
Name
I/O
I
External terminal for indication oscillator circuit. Standard OSC. freq. is approx. 7MHz.
O
With this OSC. freq., decides horizontal indicatin and character width.
Chip select terminal and turns to "L" when transfer serial data.
I
Hysteresis input. Pull up resistor is built-in.
Takes in serial data of SIN at SCK rise when CS terminal is in "L".
I
Hysteresis input. Pull up rersist is built-in.
Serial input of register for indication control and data, and address for indication data
I
memory. Hysteresis input. Pull up rersistor is built-in.
Resets internal circuit of IC at "L" mode.
I
Hysteresi input. Pull up resistor is built-in.
Power supply terminal of analog system. Connect to +5V.
Output terminal of combined video signal. Outputs 2Vp-p combined signal. Character
O
output, etc. Overlap CVIN signal and outputs at superimpose.
Input terminal deciding character output level in combined video signal. color of character
I
is white.
Input terminal of external combined video signal.
I
Character output etc. overlap this external combined video signal.
Ground terminal. Connect to GND.
General output or character background signal BL NK1* output is switchable.
O
Polarity can be selected at ROM mask.
General output or character background signal CO1* output is switchable.
O
Polarity can be selected at ROM mask.
General output or character background signal BLNK2* output is switchable.
O
Polarity can be selected at ROM mask.
General output or character background signal CO2* output is switchable.
O
Polarity can be selected at ROM mask.
O
Terminal for external use of sync signal OSC. circuit. Use the freq.: 14.32MHz at NTSC
I
system, 17.73MHz at PAL. system, 14.30MHz at MPAL system.
x
ao
y
Inputs horizontal sync signal.
I
Hysteresis input.
i
I
Input vertical sync signal. Hysteresis input. Polarity can be selected at ROM mask.
Power supply terminal of digital system. Connect to +5V.
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8
OSCI OSC2
1
2
INDICATION
OSCILLATOR
INDICATION LOCATION
DETECTION CIRCUIT
TIMING
GENERATOR
READ OUT ADDRESS
CONTROL CIRCUIT
CONTROL CIRCUIT
SHIFT REGISTER
BLINKING CIRCUIT
Function
Q Q
3
6 7
1 3
u163
.
AVR-4802/AVC-A11SR
2 9
9 4
2 8
HOR*
VERT*
19
18
SYNC SIGNAL
SYNC SIGNAL DIS-
SWITCHING CIRCUIT
CRIMINATING CIRCUIT
OSC CIRCUIT
FOR SYNC SIGNAL
H COUNTER
GENERATION
TIMING
GENERATOR
INDICATION
NTSC
VIDEO OUTPUT
CIRCUIT
1 5
0 5
8
2 9
9 4
m
co
9 9
17
OSCIN
16
OSCOUT
8
CVIDEO
9
LECHA
CVIN
10
12
P0
13
P1
14
P2
15
P3
2 8
9 9
18

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