Overview
The LA7688 integrates VIF, SIF, video, chrominance, and deflection processing circuits for PAL/NTSC format TV sets on a single chip and is provided in a 52-pin shrink package.

FEATUREs
[VIF] • PLL detector  • Buzz canceller
[SIF] • PLL detector  • Audio switch
[VIDEO] • Built-in trap  • Built-in DL 
              • Aperture control 
              • Video switch (SVO output) 
              • Black expansion
[CHROMA] • PAL/NT • Base band processing
                   (adjustment free)
                   • Built-in bandpass filter
[OSD] • Analog OSD
[DEF] • Automatic 50/60 Hz discrimination
          • Fixed vertical size  • Double AFC 
          • Built-in sync separator circuit
[Other features] • Sandcastle pulse (for the 1H delay line)
                          • fsc output (for SECAM systems) 
                          • Primary color output