Table of Contents
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Pin No.
Pin Name
40
Y input
41
DAC Vcc
42
C Vcc
43
UV/IQ SW
44
fsc output
45
1HDL CONT
46
SECAM CONT
47
B-Y/Q output
48
R-Y/I output
Ë NJM2233BM (SIGNAL ASSY: IC7103, IC7303, IC7305, IC7306)
VIDEO SW
» Block Diagram
Vin1
1
2
CTL
Vin2
3
NC
4
I/O
I
Input pin for composite video signal or Y signal.
—
VCC pin for DAC block and chroma processing block.
—
Connected to 5V (standard).
Switches between UV demodulation and IQ demodulation.
I
UV demodulation is set when this pin is open and IQ demodulation
is set when GND.
Outputs the X'tal oscillation.
O
The pin voltage becomes high only when 3.58 NTSC is received.
O
Outputs the PAL/SECAM/NTSC differentiation results.
Input/output pin to control the SECAM demodulation IC.
I/O
Determined as SECAM when more than 250 @u@A current is
pulled from this pin.
The B-Y (U) signal or Q signal is output.
O
Incorporates the LPF for eliminating the carrier inside.
Outputs the R-Y (V) signal or I signal.
O
Incorporates an LPF for eliminating carrier.
GND
8
7
Vout
VCC
6
BIAS
5
NC
Function
» Control Input – Output Signal
CTL
L
H
87
64LHP5000
PROJECTOR UNIT
I/O Signal
1Vp-p
2.5V
GND
–
UV
––– 0.7V
IQ
––– 0
AC ; 0.6Vp-p
DC ;
3.58NTSC : 3.2V
Others
: 1.4V
4.3V ; PAL
2.5V ; SECAM
0V
; NTSC
When PAL/NTSC : 4.0V
When SECAM (White/black):
0.75V
DC ; 2.5V
Rainbow color bar ;
360 mVp-p
DC ; 2.5V
Rainbow color bar ;
360 mVp-p
Function
Vin1
Vin2
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