Denon AVR-5803 Service Manual page 27

QQ
3 7 63 1515 0
M35015-210SP (IC302)
OSC1 1
OSC2 2
CS 3
SCK 4
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.
2 OSC2 terminal.
TE
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
16 OSCOUT
www for sync sig.
17 OSCIN
OSC. Circuit
Horizontal sync
18 HOR*
signal
.
Vertical sync
19 VERT*
signal
20 V Power supply
DD1
http://www.xiaoyu163.com
CS 3
INPUT
SCK CONTROL
4
CIRCUIT
SIN 5
20 V
DD1
19 VERT*
DATA
18 HOR* ADDRESS
CONTROL
CONTROL
17 OSCIN
CIRCUIT CIRCUIT
16 OSCOUT
15 P3 INDICATION
CONTROL
14 P2
REGISTER
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
Inputs horizontal sync signal.
y
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.
http://www.xiaoyu163.com
8
OSC1 OSC2
1 2
INDICATION
OSCILLATOR
H COUNTER
INDICATION LOCATION
DETECTION CIRCUIT
TIMING
GENERATOR
READ OUT ADDRESS
CONTROL CIRCUIT
INDICATION
CONTROL CIRCUIT
SHIFT REGISTER
BLINKING CIRCUIT
Function
Q Q
3 6 7 1 3
u163
.
AVR-5803/AVC-A1SR
2 9 9 4 2 8
HOR*
VERT*
19 18
SYNC SIGNAL SYNC SIGNAL DIS-
SWITCHING CIRCUIT
CRIMINATING CIRCUIT
OSC CIRCUIT
FOR SYNC SIGNAL
GENERATION
TIMING
GENERATOR
NTSC
VIDEO OUTPUT
CIRCUIT
1 5 0 5 8 2 9 9 4
m
co
9 9
17 OSCIN
16 OSCOUT
CVIDEO
8
9 LECHA
10 CVIN
12 P0
13 P1
14 P2
15 P3
2 8 9 9
27