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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TAS3103ADBTR датащи(PDF) 67 Page - Texas Instruments |
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TAS3103ADBTR датащи(HTML) 67 Page - Texas Instruments |
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67 / 152 page  3−3 Figure 3−5 shows the derivation of the decimal value of a 48-bit 25.23-format number. (1 or 0) y 223 + (1 or 0) y 222 + … + (1 or 0) y 20 + (1 or 0) y 2−1 + … + (1 or 0) y 2−23 223 Bit 222 Bit 20 Bit 2−1 Bit 2−23 Bit Figure 3−5. Alignment of 25.23 Coefficient in 32-Bit I2C Word Two 32-bit words must be sent over the I2C bus to download a level or threshold coefficient into the TAS3103A. The alignment of the 48-bit, 25.23-formatted coefficient in the 8-byte (two 32-bit words) I2C word is shown in Figure 3−6. u Coefficient Digit 16 u u u u u u u Coefficient Digit 15 u u u u Coefficient Digit 14 u u u u Coefficient Digit 13 S x x x Coefficient Digit 12 x x x x Coefficient Digit 11 x x x x Coefficient Digit 10 x x x x Coefficient Digit 9 Word 1 (Most- Significant Word) Integer Digit 3 Integer Digit 4 (Bits 211 − 29) Integer Digit 2 Integer Digit 1 Sign Bit x Coefficient Digit 8 x x x x x x x Coefficient Digit 7 x. x x x Coefficient Digit 6 x x x x Coefficient Digit 5 x x x x Coefficient Digit 4 x x x x Coefficient Digit 3 x x x x Coefficient Digit 2 x x x x Coefficient Digit 1 Word 2 (Least- Significant Word) Fraction Digit 5 Integer Digit 4 (Bit 28) 0 Fraction Digit 6 Fraction Digit 4 Fraction Digit 3 Fraction Digit 2 Fraction Digit 1 Integer Digit 6 Integer Digit 5 u = unused or don’t care bits Digit = hexadecimal digit Figure 3−6. Alignment of 25.23 Coefficient in Two 32-Bit I2C Words |
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