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MC141627 bảng dữ liệu(PDF) 8 Page - Motorola, Inc |
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MC141627 bảng dữ liệu(HTML) 8 Page - Motorola, Inc |
8 / 16 page MC141627 MOTOROLA 8 C7 C6 C5 C4 Ll C3 C2 C1 C0 Ll D7 D6 D5 D4 Level L L L L 0 L L L H 1 L L H L 2 L L H H 3 L H L L 4 L H L H 5 L H H L 6 L H H H 7 H L L L 8 H L L H 9 H L H L 10 H L H H 11 H H L L 12 H H L H 13 H H H L 14 H H H H 15 Figure 2. Coring Characteristics OPERATING MODES The Advanced Comb Filter–II can be operated in any of three modes. These modes are fixed by a digital code input into MODE0 and MODE1. The descriptions of the four types of operating modes are: Normal (FSC) Mode This mode is for the normal Y/C separation. The video sig- nal input to the A/D converter is separated into its Y and C components and output as analog information from the D/A converter outputs. The clamp circuit operates as sync tip clamp by connecting CLout with Vin, and clamps the input video signal to the fixed value $04. The coring characteristics of the vertical enhancer circuit can be set using the digital port. This mode operates the internal 4xFSC CLK which is generated by the built–in 4xFSC PLL. Normal (4xFSC) Mode This mode is for the normal Y/C separation. The video sig- nal input to the A/D converter is separated into its Y and C components and output as analog information from the D/A converter outputs. The clamp circuit operates as sync tip clamp by connecting CLout with Vin, and clamps the input vid- eo signal to the fixed value $04. The coring characteristics of the vertical enhancer circuit can be set up on the digital port. This mode operates the external 4xFSC CLK which is input on the FSC pin. Digital Input Comb Filtering Mode In this mode, the MC141627 uses only the filter and D/A portion. This mode can input 8–bit digital outputs from an ex- ternal circuit. The 8–bit external digital data can be input into D0 – D7, and the input data is filtered by the Advanced Comb Filter–II algorithm, and one output as an analog signal from Yout and Cout. Table 3. Operating Mode Mode MODE1 MODE0 Normal (FSC) Mode L L Normal (4xFSC) Mode L H Digital Input Comb Filtering Mode H L OUT IN WHITE BLACK OUT IN WHITE LEVEL (C4 – C7) (0 – 15 STEP) OUT IN BLACK LEVEL (C0 – C3) (0 – 15 STEP) OUT IN NOISE LEVEL (D4 – D7) (0 – 15 STEP) |
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Mô tả tương tự - MC141627 |
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