Generally you should say as what TV tuner you need.

Typical analog TV tuner or digital DBVT tuner.
It is large different.

80C52 family is used for controlling problems in many TV Sets, but tuners are made by RF analog engineers.
There is a many amplifiers, filters, oscillator etc. All this things can be driven digitaly by switching or analog linerar outputs.
But we need a digatal model of TV set as channels, britness, contrast and any others of parametres. Procesor work with these values and symbols and driving any tuner or other modules in TV Set.