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AM79C32AVC Datenblatt(PDF) 28 Page - Advanced Micro Devices |
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AM79C32AVC Datenblatt(HTML) 28 Page - Advanced Micro Devices |
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28 / 101 page ![]() 28 Am79C30A/32A Data Sheet Programmable Gain Coefficients The GER, GR, GX, and Sidetone gain coefficients are each 16 bits in length. Two consecutive register locations correspond to one gain coefficient. The LSB is transferred first to (or from) the microprocessor. Sample coefficients for the GER filter are listed in Table 24. The gain values are rounded off to the nearest 0.1 dB. Note: The coefficient 0008 provides an attenuation of infinity when GER gain is enabled. Table 24. GER Gain Coefficients Gain (dB) Hex Code Gain (dB) Hex Code MSB LSB MSB LSB –10 AA AA 4.0 31 DD –9.5 9B BB 4.5 44 1F –9.0 79 AC 5.0 43 1F –8.5 09 9A 5.5 33 1F –8.0 41 99 6.0 40 DD –7.5 31 99 6.5 11 DD –7.0 9C DE 7.0 44 0F –6.5 9D EF 7.5 41 1F –6.0 74 9C 8.0 31 1F –5.5 54 9D 8.5 55 20 –5.0 6A AE 9.0 10 DD –4.5 AB CD 9.5 42 11 –4.0 AB DF 10.0 41 0F –3.5 74 29 10.5 11 1F –3.0 64 AB 11.0 60 0B –2.5 6A FF 11.5 00 DD –2.0 2A BD 12.0 42 10 –1.5 BE EF 12.5 40 0F –1.0 5C CE 13.0 11 0F –0.5 75 CD 13.4 22 10 0.0 00 99 14.0 72 00 0.5 55 4C 14.5 42 00 1.0 43 DD 15.0 21 10 1.5 33 DD 15.5 10 0F 2.0 52 EF 15.9 22 00 2.5 77 1B 16.6 11 10 3.0 55 42 16.9 00 0B 3.5 41 DD 17.5 21 00 18.0 00 0F |
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