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LM9812 датащи(PDF) 23 Page - National Semiconductor (TI) |
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LM9812 датащи(HTML) 23 Page - National Semiconductor (TI) |
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23 / 37 page ![]() 23 http://www.national.com TR1 Pulse Duration (16) TR2 Pulse Duration (17) D5 (MSB) 0 0 0 • • • 1 1 1 D4 0 0 0 • • • 1 1 1 D3 0 0 0 • • • 1 1 1 D2 0 0 0 • • • 1 1 1 D1 0 0 1 • • • 0 1 1 D0 (LSB) 0 1 0 • • • 1 0 1 = (x/2)tpixel, where tpixel = 12tMCLK for 3 channel mode, tpixel = 8tMCLK for 2 channel mode (except for x = 0: duration for x = 0 is 0.5tpixel, same as for x = 1) TR Pulse Width 0.5 tpixel 0.5 tpixel 1.0 tpixel • • • 30.5 tpixel 31.0 tpixel 31.5 tpixel TR1/TR2 - Ø1 Guardband (18) D5 (MSB) 0 0 0 • • • 1 1 1 D4 0 0 0 • • • 1 1 1 D3 0 0 0 • • • 1 1 1 D2 0 0 0 • • • 1 1 1 D1 0 0 1 • • • 0 1 1 D0 (LSB) 0 1 0 • • • 1 0 1 = (x/2)tpixel, where tpixel = 12tMCLK for 3 channel mode, tpixel = 8tMCLK for 2 channel mode (except for x = 0: guardband for x = 0 is 0.5tpixel, same as for x = 1) TR Guardband 0.5 tpixel 0.5 tpixel 1.0 tpixel • • • 30.5 tpixel 31.0 tpixel 31.5 tpixel Optical Black Clamp Start Position (Must be Š RS Pulse Width) (19) D4 (MSB) 0 0 0 • • • 1 1 1 D3 0 0 0 • • • 1 1 1 D2 0 0 0 • • • 1 1 1 D1 0 0 1 • • • 0 1 1 D0 (LSB) 0 1 0 • • • 1 0 1 Clamp Start (1/(2*fMCLK)) 0 1 2 • • • 29 30 31 Optical Black Clamp Stop Position (20) D4 (MSB) 0 0 0 • • • 1 1 1 D3 0 0 0 • • • 1 1 1 D2 0 0 0 • • • 1 1 1 D1 0 0 1 • • • 0 1 1 D0 (LSB) 0 1 0 • • • 1 0 1 Clamp Stop (1/(2*fMCLK)) 0 1 2 • • • 29 30 31 Reset Pulse Width (Minimum Value Is 1) (21) D7 (MSB) 0 0 0 1 1 1 1 D6 0 1 1 0 0 1 1 D5 (LSB) 1 0 1 0 1 0 1 RS Pulse Width (1/(2*fMCLK)) 1 2 3 4 5 6 7 Table 2: Configuration Register Parameters (Continued) Note: t MCLK = 1/fMCLK = 1 MCLK period. Examples given in parenthesis are for fMCLK = 24MHz (tMCLK = 41.66ns). Parameter (Address) Control Bits Result |
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