External Synchronization Control LSI for Color Video Cameras
For Video Equipment
MN6761S
External Synchronization Control LSI for Color Video Cameras
Overview
The MN6761S is an ext...
Description
For Video Equipment
MN6761S
External Synchronization Control LSI for Color Video Cameras
Overview
The MN6761S is an external synchronization control LSI for color video cameras. When used in combination with a synchronizing signal generator (MN67601NS or MN67602PS), it provides external synchronization control for NTSC and PAL video systems.
Pin Assignment
SCPSW1 SCPSW2 WHD N/P BGP GLBSC VSS2 VDD2 GLSYNC TEST2 fHP HPCO XfHOSCI XfHOSCO
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
4fSC 4fSCOSCO 4fSCOSCI SOPCO SC1 VDD1 VSS1 TEST1 HBLK EXT/INT LSWCONT LSW VR XfH
Features
Synchronization of both the video camera and the VCR External synchronization inputs: Composite synchronizing signal and burst subcarrier External synchronization techniques Horizontal synchronization: phase-locked loop Vertical synchronization: reset technique Subcarrier synchronization: phase-locked loop Support for both NTSC and PAL systems Built-in feature for automatically switching between external and internal synchronization Built-in horizontal phase adjustment circuit
(TOP VIEW) SOP028-P-0375
Applications
Color video cameras
MN6761S
XfH OSCO XfH OSCI
XfH
HPCO
WHD
Block Diagram
VR fHP 3 11 12 16 13 14 fV
V separation Monostable multivibrator XfH oscillator Phase comparator
15
GLSYNC fH H separation 8 7
Internal/external synchronization switch
9
VDD2 VSS2 19 EXT/INT 20
N/P
4
HBLK and BGP pulse generator
HBLK
CK
Line switch control pulse generator
...
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