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MT9M131 データシート(PDF) 16 Page - ON Semiconductor |
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MT9M131 データシート(HTML) 16 Page - ON Semiconductor |
16 / 50 page MT9M131 www.onsemi.com 16 IFP REGISTER DESCRIPTION Configuration The vast majority of IFP registers associate naturally to one of the IFP modules. These modules are identified in Table 9. Detailed register descriptions follow in Table 10. A few registers create effects across a number of module functions. These include R0xF0 page map register (R/W); R0x106 operating mode control register (R/W); R0x108 output format control register (R/W); the R0x23E gain types and CCM threshold register − the gain threshold for CCM adjustment (R/W). Colorpipe Registers Unless noted otherwise in this document, colorpipe registers take effect immediately. This can result in one or more distorted output frames. These registers should be adjusted during FV LOW or the resulting image should be hidden for one or two frames. Colorpipe resize registers are updated shortly after FV goes HIGH. They are not examined again until the next frame. Table 10. COLORPIPE REGISTER DESCRIPTION ADDRESS PAGE 1 Register Number Dec − Hex Description R5:1 − R0x105 − Aperture Correction Default 0x0003 Description Aperture correction scale factor, used for sharpening Bit 3 Enables automatic sharpness reduction control (see R0x233) Bits 2:0 Sharpening factor: “000” − No sharpening “001” − 25% sharpening “010” − 50% sharpening “011” − 75% sharpening “100” − 100% sharpening “101” − 125% sharpening “110” − 150% sharpening “111” − 200% sharpening R6:1 − R0x106 − Operating Mode Control (R/W) Default 0x700E Description This register specifies the operating mode of the IFP Bit 15 Enables manual white balance. User can set the base matrix and color channel gains. This bit must be asserted and de-asserted with a frame in between to force new color correction settings to take effect Bit 14 Enables auto exposure Bit 13 Enables on-the-fly defect correction Bit 12 Clips aperture corrections. Small aperture corrections (< 8) are attenuated to reduce noise amplification Bit 11 Load color correction matrix 1: In manual white balance mode, triggers the loading of a new base matrix in color correction and the loading of new base sensor gain ratios 0: Enables the matrix to be changed “offline” Bit 10 Enables lens shading correction 1: Enables lens shading correction Bit 9 Reserved Bit 8 Reserved Bit 7 Enables flicker detection 1: Enables automatic flicker detection Bit 6 Reserved for future expansion Bit 5 Reserved Bit 4 Bypasses color correction matrix 1: Outputs raw color, bypassing color correction 0: Normal color processing Bits 3:2 Auto exposure back light compensation control “00” − Auto exposure sampling window is specified by R0x226 and R0x227 (“large window”) “01” − Auto exposure sampling window is specified by R0x22B and R0x22C (“small window”) “1X” − Auto exposure sampling window is specified by the weighted sum of the large window and the small window, with the small window weighted four times more heavily |
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