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ADV7393 数据表(PDF) 72 Page - Analog Devices |
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ADV7393 数据表(HTML) 72 Page - Analog Devices |
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72 / 96 page ![]() ADV7390/ADV7391/ADV7392/ADV7393 Rev. 0 | Page 72 of 96 APPENDIX 5–SD TIMING Mode 0 (CCIR-656)—Slave Option (Subaddress 0x8A = X X X X X 0 0 0) The ADV739x is controlled by the SAV (start of active video) and EAV (end of active video) time codes embedded in the pixel data. All timing information is transmitted using a 4-byte synchronization pattern. A synchronization pattern is sent immediately before and after each line during active picture and retrace. If the VSYNC and HSYNC pins are not used, they should be tied high when using this mode. Y Cr Y F F 0 0 0 0 X Y 8 0 1 0 8 0 1 0 F F 0 0 F F A B A B A B 8 0 1 0 8 0 1 0 F F 0 0 0 0 X Y C b Y C r C b Y C b Y C r EAV CODE SAV CODE ANCILLARY DATA (HANC) 4 CLOCK 4 CLOCK 268 CLOCK 1440 CLOCK 4 CLOCK 4 CLOCK 280 CLOCK 1440 CLOCK END OF ACTIVE VIDEO LINE START OF ACTIVE VIDEO LINE ANALOG VIDEO INPUT PIXELS NTSC/PAL M SYSTEM (525 LINES/60Hz) PAL SYSTEM (625 LINES/50Hz) Y Figure 102. SD Timing Mode 0, Slave Option Mode 0 (CCIR-656)—Master Option (Subaddress 0x8A = X X X X X 0 0 1) The ADV739x generates H and F signals required for the SAV and EAV time codes in the CCIR-656 standard. The H bit is output on HSYNC and the F bit is output on VSYNC. 522 523 524 525 8 9 10 11 20 21 22 DISPLAY DISPLAY VERTICAL BLANK ODD FIELD EVEN FIELD H F 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 283 284 285 ODD FIELD EVEN FIELD DISPLAY DISPLAY VERTICAL BLANK H F 7 6 5 4 3 2 1 Figure 103. SD Timing Mode 0, Master Option, NTSC |
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