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ALC5642R-VF-CG 数据表(PDF) 45 Page - Realtek Semiconductor Corp. |
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ALC5642R-VF-CG 数据表(HTML) 45 Page - Realtek Semiconductor Corp. |
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45 / 156 page  ALC5642-VF Datasheet Multi-Channel Audio Hub/CODEC with embedded Voice DSP and SounzReal TM Digital Sound Effect 33 Rev. 0.93 7.10. DRC and AGC Function The Dynamic Range Controller (DRC) dynamically adjusts the input signal and let the output signal achieve the target level. The ALC5642 supports playback DRC for DAC path, and the DRC can also be used as AGC(Auto Gain Controller) for ADC path. The control register is at MX-B4[15:14]. The function block is shown as below. The signal input pass through the Pre-Gain first, then DRC volume and Post-Gain then output. The Pre-Gain is use to enlarge the input signal. The DRC volume is use to attenuate the signal after detected by DRC. The Post-Gain is use to fine tune the signal after pass DRC tuning. I2C Interface Pre-Gain DRC Volume Post-Gain DAC DRC -95.625 ~ 0dB 0.375/step -11.625 ~ 12dB, 0.375/step MXB5[13:8] 0 ~ 28.5dB, 1.5/step MXB5[4:0] 1. Limiter level 2. Attack / Release time 3. Zero data Figure 18. DAC DRC Function Block Analog Pre-Boost Pre-Gain AGC Volume I2S Interface AGC -95.625 ~ 0dB 0.375/step 1. Limiter level 2. Attack / Release time 3. Noise gate ADC 0 ~ 28.5dB, 1.5/step MXB5[4:0] Post-Gain -11.625 ~ 12dB, 0.375/step MXB5[13:8] Figure 19. ADC AGC Function Block |
类似零件编号 - ALC5642R-VF-CG |
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类似说明 - ALC5642R-VF-CG |
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