TA1252AN

The TA1252AN is video chroma and deflection signal.Processing IC for NTSC.On a 56-pin shrink DIP package.TA1252AN has deflection distortion compensation.TA1252AN uses an i2C bus controls for controllings and settings.

Features of the TA1252AN are:(1)video signal processing:built-in Y delay line,black streth,DC restoration ratio compensation,aperture controlled sharpness,output for velocitty scan modulation(VSM),white peak suppression,EDTV2-NRZ signal detection(output on read bus);(2)chroma signal processing:built-in chroma BPF/TOF,R-Y and B-Y outputs,color/BW situation output by read bus,3.58MHz continuous wave(CW) output;(3)sync signal processing:counts down 32 fH,dual AFC,vertical AGC,HD and VD outputs,vertical frequency fixed mode,horizontal and vertical position alignment,DC outputs for vertical centering;(4)text signal processing:analog RGB inputs,digital RGB inputs,halftone switch (YM),cutoff and drive alignment;(5)deflection correction function:horizontal and vertical amplitude adjustment,vertical linearity correction,vertical S correction,vertical EHT correction,E/W parabola correction,E/W corner correction,E/W trapezium correction,E/W EHT correction.

The read mode of the TA1252AN can be summarized as:(1):the item is power on reset (pores),the data is 0;normal 1;resister preset;(2):the item is color mode (color),the data is 0;B/W 1;NTSC;(3):the item is ED2 intentification,the data is 0;non-ED2 1;ED2;(4):the item is self diagnosis result output,the data is 0;NG 1;OK.