INTRODUCTION

The STV224XH/228XH/223XH are fully bus-controlled ICs for TV that include PIF, SIF, Luma, Chroma and Deflection processing functions. Used with a vertical frame booster (TDA8174A for a 90° chassis, STV9306 for a 110° chassis), they allow multistandard (BGDKIMNLL’, PAL/SECAM/NTSC) sets to be designed with very few external components and no manual adjustments.

■ I2C Bus Control

■ PIF Circuit with PLL Demodulation

(Positive and Negative Video)

■ SIF Circuit with QSS Structure, FM

Demodulation and AM Demodulation for France

■ Intercarrier Capability

■ Built-in Sound Bandpass

■ Sound Subcarrier Output for Stereo Chassis (FM, NICAM)

■ Audio FM wide mode

■ Audio Switch and Volume Control (Mono Chassis)

■ AVL (Automatic Volume Levelling)

■ Integrated Chroma Filters and Luma Delay Line

■ Integrated Chroma Delay Line

■ Video Switch (3 CVBS In, 2 CVBS Out)

■ SVHS Switch (Y Combined with CVBS3 Input)

■ OSD RGB Inputs

■ External RGB/YCrCb Inputs or YUV Interface

■ PAL / SECAM / NTSC Chroma Demodulators

■ Auto Flesh Control Capability in NTSC mode

■ South America Capability (PAL-M / PAL-N / NTSC)

■ Chroma Subcarrier Output

■ Black Stretch Circuit

■ Peaking Circuit

■ Automatic Cut-off Current Loop

■ Manual Cut-off possible for low-cost

applications

■ Two Horizontal Deflection PLLs

■ Vertical Countdown

■ Half Contrast

■ APR (Automatic RGB Peak Regulation) or RGB

Peak Limitation Function

■ White Insertion

■ Copy Protection mode

■ Wide Line Blanking mode

■ SAW Filter Switch Control (TQFP64 package only)

■ Very Few External Components