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TVP5146M2PFP_0708 Datasheet(PDF) 69 Page - Texas Instruments |
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TVP5146M2PFP_0708 Datasheet(HTML) 69 Page - Texas Instruments |
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69 / 108 page  Functional Description 61 SLES141B—August 2007 TVP5146M2PFP 2.11.60 AGC White Peak Processing Register Subaddress 74h Default 00h 7 6 5 4 3 2 1 0 Luma peak A Reserved Color burst A Sync height A Luma peak B Composite peak Color burst B Sync height B Luma peak A: Use of the luma peak as a video amplitude reference for the back-end feed-forward type AGC algorithm. 0 = Enabled (default) 1 = Disabled Color burst A: Use of the color burst amplitude as a video amplitude reference for the back-end. NOTE: Not available for SECAM, component, and B/W video sources. 0 = Enabled (default) 1 = Disabled Sync height A: Use of the sync height as a video amplitude reference for the back-end feed-forward type AGC algorithm. 0 = Enabled (default) 1 = Disabled Luma peak B: Use of the luma peak as a video amplitude reference for the front-end feedback type AGC algorithm. 0 = Enabled (default) 1 = Disabled Composite peak: Use of the composite peak as a video amplitude reference for the front-end feedback type AGC algorithm. NOTE: Required for CVBS and SCART (with color burst) video sources. 0 = Enabled (default) 1 = Disabled Color burst B: Use of the color burst amplitude as a video amplitude reference for the front-end feedback type AGC algorithm. NOTE: Not available for SECAM, component, and B/W video sources. 0 = Enabled (default) 1 = Disabled Sync height B: Use of the sync height as a video amplitude reference for the front-end feedback type AGC algorithm. 0 = Enabled (default) 1 = Disabled NOTE: If all 4 bits of the lower nibble are set to logic 1 (that is, no amplitude reference selected), then the front-end analog and digital gains are automatically set to nominal values of 2 and 2304, respectively. If all 4 bits of the upper nibble are set to logic 1 (that is, no amplitude reference selected), then the back-end gain is set automatically to unity. If the input sync height is greater than 100% and the AGC-adjusted output video amplitude becomes less than 100%, then the back-end scale factor attempts to increase the contrast in the back end to restore the video amplitude to 100%. |
Similar Part No. - TVP5146M2PFP_0708 |
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Similar Description - TVP5146M2PFP_0708 |
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