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WM8904ECS/R 数据表(PDF) 153 Page - Wolfson Microelectronics plc |
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WM8904ECS/R 数据表(HTML) 153 Page - Wolfson Microelectronics plc |
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153 / 188 page  Pre-Production WM8904 w PP, Rev 3.3, September 2012 153 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R41 (29h) DRC 1 15:12 DRC_ATK [3:0] 0011 Gain attack rate (seconds/6dB) 0000 = Reserved 0001 = 182µs 0010 = 363µs 0011 = 726µs (default) 0100 = 1.45ms 0101 = 2.9ms 0110 = 5.8ms 0111 = 11.6ms 1000 = 23.2ms 1001 = 46.4ms 1010 = 92.8ms 1011-1111 = Reserved Dynamic Range Control (DRC) 11:8 DRC_DCY [3:0] 0010 Gain decay rate (seconds/6dB) 0000 = 186ms 0001 = 372ms 0010 = 743ms (default) 0011 = 1.49s 0100 = 2.97s 0101 = 5.94s 0110 = 11.89s 0111 = 23.78s 1000 = 47.56s 1001-1111 = Reserved Dynamic Range Control (DRC) 7:6 DRC_QR_THR [1:0] 01 Quick release crest factor threshold 00 = 12dB 01 = 18dB (default) 10 = 24dB 11 = 30dB Dynamic Range Control (DRC) 5:4 DRC_QR_DCY [1:0] 00 Quick release decay rate (seconds/6dB) 00 = 0.725ms (default) 01 = 1.45ms 10 = 5.8ms 11 = Reserved Dynamic Range Control (DRC) 3:2 DRC_MINGAIN [1:0] 10 Minimum gain the DRC can use to attenuate audio signals 00 = 0dB (default) 01 = -6dB 10 = -12dB 11 = -18dB Dynamic Range Control (DRC) 1:0 DRC_MAXGAIN [1:0] 00 Maximum gain the DRC can use to boost audio signals 00 = 12dB 01 = 18dB (default) 10 = 24dB 11 = 36dB Dynamic Range Control (DRC) Register 29h DRC 1 |
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