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LM9812 датащи(PDF) 21 Page - National Semiconductor (TI) |
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LM9812 датащи(HTML) 21 Page - National Semiconductor (TI) |
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21 / 37 page ![]() 21 http://www.national.com Red PGA (3) Green PGA (4) Blue PGA (5) D7 0 0 0 • • • 0 0 0 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 Typical Gain (V/V) 0.93 1.00 • • • 3.00 Coarse Color Balance PGA (Blue with x3 multiplier bit set) (5) D7 1 1 1 • • • 1 1 1 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 Typical Gain (V/V) 2.79 3.00 • • • 9.00 Internal Offset Subtractor Coefficient (6) D7 (MSB) 0 0 0 • • • 1 1 1 D6 0 0 0 • • • 1 1 1 D5 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 Offset (in ADC LSBs) 0 1 2 • • • 253 254 255 Internal Multiplier Gain Coefficient (7, 8) D9 (MSB) 0 0 0 • • • 1 1 1 D8 0 0 0 • • • 1 1 1 D7 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 Gain (V/V) See Equation 5 Internal/External Coefficient Clocks (9) D7 0 1 External Coefficient Clock Source Internal Coefficient Clock Source Number of Coefficient Clocks (9) D5 0 1 GCLK and OCLK GCLK only Number of Databuses in System (9) D4 0 1 2 Databuses 1 Databus 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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