UPC1830GT NEC, UPC1830GT Datasheet - Page 28

• Manufacturer Part Number: UPC1830GT
• Description: FILTER-CONTAINING VIDEO CHROMA/ SYNCHRONIZING SIGNAL PROCESSING LSI COMPATIBLE WITH NTSC/PAL SYSTEM
• Manufacturer: NEC

MODE CONTROL SECTION
NTSC/PAL MODE SETTING
VERTICAL FREQUENCY (f
SUBCARRIER FREQUENCY (f
28
NTSC/PAL mode
switch threshold
voltage
NTSC/PAL mode
switch input pin
current
Subcarrier frequency
switch threshold
voltage
Subcarrier frequency
switch input pin
current
Vertical frequency
switch threshold
voltage
Vertical frequency
switch input pin
current
Mode 1
Mode 2
Mode 3
Lower than E
Higher than E
Lower than E
Higher than E
SW setting of pin 42
Voltage of pin 41
Voltage of pin 6
Parameter
FV
SC
FV
SC
Symbol
E
E
E
E
I
I
I
IPN
ISC
IFV
PN1
PN2
SC
FV
Lower than E
Between E
Higher than E
Voltage of pin 42 at
which both decoder and
matrix changes to
NTSC or PAL mode
simultaneously.
Voltage of pin 42 at
which only matrix
changes to NTSC or
PAL mode and decoder
remains in NTSC mode.
Input current of pin 42.
Voltage of pin 41 at
which f
mode is changed.
Input current of pin 41.
Voltage of pin 6 at
which f
changed.
Input current of pin 6.
Voltage of pin 42
V
Subcarrier frequency f
) SWITCHING
Vertical frequency fv
Conditions
V
SC
SC
50/60 mode is
PN1
3.58/4.43
) SWITCHING
4.43 MHz
3.58 MHz
PN1
PN2
and E
50 Hz
60 Hz
PN2
Decoder mode
Input signal
SC
NTSC
NTSC
PAL
–
–
–
–
–
–
–
Composite f
/Separate
Matrix mode
–
–
–
–
–
–
–
NTSC
PAL
PAL
(MHz) NTSC
S C
–
–
–
–
–
–
–
PAL or
–
–
–
–
–
–
–
MIN.
1.37
3.03
–0.5
–2.0
–2.0
2.2
2.2
TYP.
1.67
3.33
+0.2
–0.2
–0.2
2.5
2.5
MAX.
1.97
3.63
+2.0
+0.5
+0.5
2.8
2.8
PC1830
Unit
V
V
V
V
A
A
A