e Clock). Ratio, 50 Hz Frame Rate, 29.5 MHz Sample Clock). V, and F timing indicated is compatible with video video. The analog interface uses 750 lines per frame, compression standards rather than BT.656. with active video present on lines 26-745, as shown in Figure 7.3-26. For the 59.94 Hz frame rate, each scan line time (H) is 720p Systems about 22.24 us. Detailed horizontal timing is dependent on the specific video interface used. Progressive analog component video Progressive digital component video Analog component signals are comprised of three sig- nals, analog R'G'B' or YPbPr. Referred to as 720p (since SMPTE 296M specifies the representation for 720p there are typically 720 active scan lines per frame and digital R'G'B' or YCbCr signals. Active resolutions de- they are progressive), the frame rate is usually 59.94 Hz fined within SMPTE 296M, their 1x Y and R'G'B' (60/1.001) to simplify the generation of (M) NTSC sample rates (Fs), and frame rates, are: SAMPLE RATE = 36.0 MHZ SAMPLE RATE = 20.25 MHZ 16 SAMPLES 9 SAMPLES DIGITAL DIGITAL BLANKING DIGITAL ACTIVE LINE BLANKING DIGITAL ACTIVE LINE 192 SAMPLES 960 SAMPLES 104 SAMPLES 544 SAMPLES (0-191) (192-1151) (0-103) (104-647) TOTAL LINE TOTAL LINE 1152 SAMPLES 648 SAMPLES (0-1151) (0-647) Figure 7.3-22 576p Analog-Digital Relationship (16:9 Aspect Figure 7.3-24 576p Analog-Digital Relationship (4:3 Aspect Ratio, 50 Hz Frame Rate, 36 MHz Sample Clock). Ratio, 50 Hz Frame Rate, 20.25 MHz Sample Clock). Video signals overview CHAPTER 7.3 LINE 1 (V 1) BLANKING LINE 45 (V 0) NUMBER ACTIVE VIDEO 45-620 621-625 LINE 621 (V 1) BLANKING LINE 625 (V = 1) Figure 7.3-25 576p Digital Vertical Timing (576 Active Lines). V changes state at the EAV sequence at the beginning of the digital line. Note that the digital line number changes state prior to the start of horizontal sync, as shown in Figures 7.3-21 through 7.3-24. 1280 X 720p 74.176 MHz 23.976 Hz (since there are typically 1080 active scan lines per frame and they are interlaced), the frame rate is usually 1280 