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CS7615-KQ Datasheet(PDF) 10 Page - Cirrus Logic |
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CS7615-KQ Datasheet(HTML) 10 Page - Cirrus Logic |
10 / 36 page CS7615 10 DS231PP6 ternal analog gain range is 38 dB in steps of 0.078 dB ideal. Adjustments made in these small steps should cause no noticeable brightness change in the image from frame to frame. In addition to the internal analog gain, the control loop will vary the shutter speed through the OFDX output from 0 to - 54 dB as it deems necessary. The AGC algorithm uses a luma or mosaic histo- gramming technique in which the brightness of each pixel is binned into one of seven bins. The number of pixels in a bin will produce an error sig- nal that is then used to update the gain. The follow- ing parameters control the loop dynamics and are programmable to meet the needs of the user. PAL bit: Selects a PAL or NTSC camera sys- tem. AGC Window: Adjusts what portion of the frame is used for the AGC algorithm. Luma/Mosaic: Selects whether luma or mosaic data are used in the histogramming. HREF HSYNC CLAMP HENB CCD OUTPUT 0 HBPD Active Video Hsnyr Hsynf BC Hstart Hend Optical black pixels Inactive video Active video Hlen Figure 9. Timing Diagram for Href, HSYNC, Clamp, and Henb |
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