CS
SIN
SCLK
RST
CTR-A
CTR-B
NSDET
SDET
VDD1
VDD2
VSS
SYNCDET
VCOIN
VCOOUT
FC
AMPIN
AMPOUT
PDOUT
SYSIN
SEPC
SERIAL
PARALLEL
CONVERSION
A F C
CIRCUIT
SYNCHRO-
NIZING
SEPARATION
COMPOSITE
SYNCHRONIZING
SEPARATION
CIRCUIT
INDICATOR
RAM
DECODER
ROM
SHIFT
REGISTER
HSYN OUT
VSYN OUT
XTAL
IN1
XTAL
IN2
XTAL
OUT1
XTAL
OUT2
CVCR
CVIN
CVOUT
ON/OFF
INVERSION
CONTROL CIRCUIT
8 BITS
LATCH
AND
COMMAND
DECODER
COMPOSITE
SYNCHRO-
NIZING
SIGNAL
CONTROL
SYNCHRO-
NIZING
DISCRIMI-
NATION
HORIZONTAL
CHARACTER
SIZE
REGISTER
VERTICAL
CHARACTER
SIZE
REGISTER
VERTICAL
INDICATION
POSITION
REGISTER
HORIZONTAL
INDICATION
POSITION
REGISTER
CHARACTER OUTPUT CONTROL
BACKGROUND CONTROL
VIDEO OUTPUT CONTROL
SYNCHRONIZING
SIGNAL
GENERATOR
TIMING
GENERATOR
CHARACTER
CONTROL
COUNTER
LINE
CONTROL
COUNTER
HORIZONTAL
INDICATION
POSITION
DETECTOR
VERTICAL
INDICATION
POSITION
DETECTOR
ON/OFF
INVERSION
CONTROL
REGISTER
INDICATOR
CONTROL
REGISTER
RAM WRITE
ADDRESS
COUNTER
DECODER
VERTICAL
DOT COUNTER
HORIZONTAL
DOT COUNTER
VERTICAL
SIZE
COUNTER
HORIZONTAL
SIZE
COUNTER
FONT
No.
Symbol
Description
No.
Symbol
Description
1
VSS
Ground terminal
16
CVOUT
Composite video output terminal
2
XTALIN1
Crystal oscillator connection terminals for.
17
VDD2
Power supply terminal for composite video signal
3
XTALOUT1
internal synchronizing signal generator
18
CVIN
Composite video signal input terminal
4
HSYNCOUT
Horizontal synchronizing signal output terminal
19
CVCR
Cromatic signal input term,inal
5
XTALIN2
Crystal oscillator connection terminals for
20
SYNCIN
Video signal input terminal for internal synchronizing separation circuit
6
XTALOUT2
internal synchronizing signal generator
21
SEPC
Bias output pin for internal synchronizing separation circuit
7
VSYNCOUT
Vertical synchronizing signal output terminal
22
VSS
Ground terminal
8
CS
Chip enable input terminal
23
PDOUT
Power supply output terminal for AFC circuit
9
SIN
Serial data input terminal
24
AMPIN
Filter connection terminals
10
SCLK
Clock input terminal for serial data
25
AMPOUT
11
CTR-A
Video control output terminal
26
FC
Power supply output terminal
12
CTR-B
Video control output terminal
27
VCOIN
LC resonator connection terminals for VCO
13
NSDET
Selection pin for PAL or NTSC
28
VCOOUT
14
SDET
Signal detection terminal
29
SYNCDET
External synchronizing signal discrimination output terminal
15
RST
System reset input terminal
30
VDD1
Power supply terminal
DTR-4.5
IC BLOCK DIAGRAMS AND DESCRIPTIONS
LC74763-9836(On-screen and controller)