esent on lines 45-524, as shown in 16 samples for the front porch; CEA-861D (DVI and HDMI timing) Figure 7.3-2. specifies 19 samples for the front porch. CHAPTER 7.3 Video signals overview SAMPLE RATE = 18.0 MHZ SAMPLE RATE = 10.125 MHZ 21.5 SAMPLES 12 SAMPLES DIGITAL DIGITAL BLANKING DIGITAL ACTIVE LINE BLANKING DIGITAL ACTIVE LINE 184 SAMPLES 960 SAMPLES 99 SAMPLES 544 SAMPLES (0-183) (184-1143) (0-98) (99-642) TOTAL LINE TOTAL LINE 1144 SAMPLES 643 SAMPLES (0-1143) (0-642) Figure 7.3-4 480i Analog-Digital Relationship (16:9 Aspect Ratio, Figure 7.3-6 480i Analog-Digital Relationship (4:3 Aspect Ratio, 29.97 Hz Frame Rate, 18 MHz Sample Clock). 29.97 Hz Frame Rate, 10.125 MHz Sample Clock). For the 59.94 Hz frame rate, each scan line time (H) is about 31.776 us. Detailed horizontal timing is dependent Other common active resolutions, their 1x sample on the specific video interface used. rates (Fs), and frame rates, are: Interlaced digital component video 864 X 480i 16.38 MHz 29.97 Hz BT.601 and SMPTE 267M specify the representation for 704 X 480i 13.50 MHz 29.97 Hz 480i digital R'G'B' or YCbCr video signals. Active reso- 640 X 480i 12.27 MHz 29.97 Hz lutions defined within BT.601 and SMPTE 267M, their 1 X Y and R'G'B' sample rates (Fs), and frame rates, are: 544 X 480i 10.12 MHz 29.97 Hz 528 X 480i 9.900 MHz 29.97 Hz 960 X 480i 18.0 MHz 29.97 Hz 480 X 480i 9.000 MHz 29.97 Hz 720 X 480i 13.5 MHz 29.97 Hz 352 X 480i 6.750 MHz 29.97 Hz SAMPLE RATE = 12.27 MHZ SAMPLE RATE = 9 MHZ 14.5 SAMPLES 10.7 SAMPLES DIGITAL DIGITAL BLANKING DIGITAL ACTIVE LINE BLANKING DIGITAL ACTIVE LINE 140 SAMPLES 640 SAMPLES 92 SAMPLES 480 SAMPLES (0-139) (140-779) (0-91) (92-571) TOTAL LINE TOTAL LINE 780 SAMPLES 572 SAMPLES (0-779) (0-571) Figure 7.3-5 480i Analog-Digital Relationship (4:3 Aspect Ratio, Figure 7.3-7 480i Analog-Digital Relationship (4:3 Aspect Ratio, 29.97 Hz Frame Rate, 12.27 MHz Sample Clock). 29.97 Hz Frame Rate, 9 MHz Sample Clock). Video signals overview CHAPTER 7.3 LINE (V 1) LINE 4 BLANKING LINE 23 (V 0) FIELD 1 