GENERAL DESCRIPTION
The TDA9144 is an I2C-bus controlled, alignment-free PAL/NTSC/SECAM decoder/sync processor with helper demodulator for PALplus signals and blanking facilities for PALplus and EDTV-2 signals. The TDA9144 has been designed for use with baseband chrominance delay lines, and has a combined subcarrier frequency/comb filter enable signal for communication with a PAL/NTSC comb filter.

FEATURES
• Multi-standard colour decoder and sync processor for PAL, NTSC and SECAM
• PALplus helper demodulator
• PALplus helper blanking and EDTV-2 blanking
• I2C-bus controlled
• I2C-bus addresses hardware selectable
• Pin compatible with TDA9141
• Alignment free
• Few external components
• Designed for use with baseband delay lines
• Integrated video filters
• Adjustable luminance delay
• Noise detector with I2C-bus read-out
• Norm/no_norm detector with I2C-bus read-out
• CVBS or Y/C input, with automatic detection possibility
• CVBS output provided I2C-bus address 8A is used
• Vertical divider system
• Two-level sandcastle signal
• VA synchronization pulse (3-state)
• HA synchronization pulse or clamping pulse CLP input/output
• Line-locked clock output (6.75 MHz or 6.875 MHz) or stand-alone I2C-bus output port
• Stand-alone I2C-bus input/output port
• Colour matrix and fast YUV switch
• Comb filter enable input/output with subcarrier frequency
• Internal bypass mode of external delay line for PALplus and NTSC applications
• Low power standby mode with 3-state YUV outputs
• Fast blanking detector with I2C-bus read-out
• Blanked or unblanked sync on Yout by I2C-bus bit BSY
• internal MACROVISION gating for the horizontal PLL enabled by bus bit EMG.