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MN676011NPS Datasheet

  • MN676011NPS

  • NTSC Color Camera Synchronizing Signal Generator LSI

  • 8頁(yè)

  • PANASONIC

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For Video Equipment
MN676011NPS
NTSC Color Camera Synchronizing Signal Generator LSI
Overview
The MN676011NPS is a CMOS LSI that generates
NTSC color camera synchronizing signals as defined by
the EIA RS-170A standard.
It features a built-in 4f
SC
(14.31818 MHz) crystal os-
cillator circuit and divides that frequency to generate the
horizontal synchronizing signal f
H
(15.7 kHz), the vertical
synchronizing signal f
V
(60 Hz), and the composite
synchronizing signal.
It also divides the 4f
SC
clock signal frequency by four
to generate the color subcarrier frequency signals SC1
and SC2 and the burst signal gated with the burst flag
(BF) pulse.
It includes a vertical reset (VR) input pin for resetting
the leading edge of the vertical synchronizing pulse (VP)
with the falling edge of the input signal. It also includes
separate clock input pins for the color subcarrier frequency
signal circuits and the synchronizing signal circuits to
permit synchronization with such external synchroniz-
ing LSIs as the MN6761S.
Pin Assignment
V
DD1
V
SS1
EX4f
SC
I
4f
SC
OSCI
4f
SC
OSCO
SC1
SC3
BSC
VPCO
EXT/INT
CP1
TEST
VR
EX910f
H
I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
DD2
V
SS2
SYNC
VP
WHD
BLK
CP1V
CP2
WBLK
BF
SW1
SW3
SW3
SW4
(TOP VIEW)
Features
Power-saving CMOS synchronizing signal generator
(conformed to EIA RS-170A standard)
Built-in 14.31818 MHz clock generator
12 signal outputs including horizontal and vertical
synchronizing signals and color subcarrier
frequency signals (The vertical synchronizing signal
is available as the VP signal output.)
Pins for switching BLK signal pulse widths
SOP028-P-0375
Applications
Color video cameras

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