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ALC5610-GR Datasheet(PDF) 36 Page - Realtek Semiconductor Corp. |
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ALC5610-GR Datasheet(HTML) 36 Page - Realtek Semiconductor Corp. |
36 / 93 page ![]() ALC5610 Datasheet AC’97 Audio Codec + Touch Panel Controller + Voice PCM Interface 27 Track ID: JATR-1076-21 Rev. 1.4 7.10. AVC Control The Automatic Volume Control (AVC) function dynamically adjusts the input signal quantized by the ADC to an expected sound level by setting THmax and THmin. When the average level of input signal is higher than THmax, the AVC will decrease the selected analog gain to attenuate the quantized Pulse Code Modulation (PCM) signal to a lower amplitude than THmax. When the average level of input signal is lower than THmin, the AVC will increase the selected analog gain to amplify the input signal. The quantized Pulse Code Modulation (PCM) signal is then set higher than THmin. The quantized PCM has an average level between THmin and THmax. The AVC reference source channel and target channel can be individually set by Index20[0] and Reg5E[13:12]. The AVC architecture is shown in Figure 18 below: Figure 18. Auto Volume Control Block Diagram |
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