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ADV7341 数据表(PDF) 5 Page - Analog Devices |
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ADV7341 数据表(HTML) 5 Page - Analog Devices |
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5 / 108 page  Data Sheet ADV7340/ADV7341 Rev. C | Page 5 of 108 GENERAL DESCRIPTION The ADV7340/ADV7341 are high speed, digital-to-analog video encoders in a 64-lead LQFP package. Six high speed, NSV, 3.3 V, 12-bit video DACs provide support for composite (CVBS), S-Video (Y-C), and component (YPrPb/RGB) analog outputs in standard definition (SD), enhanced definition (ED), or high definition (HD) video formats. The ADV7340/ADV7341 have a 30-bit pixel input port that can be configured in a variety of ways. SD video formats are supported over an SDR interface, and ED/HD video formats are supported over SDR and DDR interfaces. Pixel data can be supplied in either the YCrCb or RGB color space. The parts also support embedded EAV/SAV timing codes, external video synchronization signals, and I2C® communication protocol. In addition, simultaneous SD and ED/HD input and output are supported. Full-drive DACs ensure that external output buffering is not required, while 216 MHz (SD and ED) and 297 MHz (HD) oversampling ensures that external output filtering is not required. Cable detection and DAC autopower-down features keep power consumption to a minimum. Table 1 lists the video standards directly supported by the ADV7340/ADV7341. Table 1. Standards Directly Supported by the ADV7340/ ADV7341 Active Resolution I/P1 Frame Rate (Hz) Clock Input (MHz) Standard 720 × 240 P 59.94 27 720 × 288 P 50 27 720 × 480 I 29.97 27 ITU-R BT.601/656 720 × 576 I 25 27 ITU-R BT.601/656 640 × 480 I 29.97 24.54 NTSC Square Pixel 768 × 576 I 25 29.5 PAL Square Pixel 720 × 483 P 59.94 27 SMPTE 293M 720 × 483 P 59.94 27 BTA T-1004 720 × 483 P 59.94 27 ITU-R BT.1358 720 × 576 P 50 27 ITU-R BT.1358 720 × 483 P 59.94 27 ITU-R BT.1362 720 × 576 P 50 27 ITU-R BT.1362 1920 × 1035 I 30 74.25 SMPTE 240M 1920 × 1035 I 29.97 74.1758 SMPTE 240M 1280 × 720 P 60, 50, 30, 25, 24 74.25 SMPTE 296M 1280 × 720 P 23.97, 59.94, 29.97 74.1758 SMPTE 296M 1920 × 1080 I 30, 25 74.25 SMPTE 274M 1920 × 1080 I 29.97 74.1758 SMPTE 274M 1920 × 1080 P 30, 25, 24 74.25 SMPTE 274M 1920 × 1080 P 23.98, 29.97 74.1758 SMPTE 274M 1920 × 1080 P 24 74.25 ITU-R BT.709-5 1 I = interlaced, P = progressive. |
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