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TDA7434 数据表(PDF) 7 Page - STMicroelectronics |
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TDA7434 数据表(HTML) 7 Page - STMicroelectronics |
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7 / 10 page ![]() Bass, Treble MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 D4 Input Selector 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 1 1 1 1 0 0 1 1 0 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 Treble Steps - 14dB -12dB -10dB -8dB -6dB -4dB -2dB 0dB 0dB +2dB +4dB +6dB +8dB +10dB +12dB +14dB 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 0 0 1 1 0 0 0 0 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 Bass Steps -18dB -16dB -14dB -12dB -10dB -8dB -6dB -4dB -2dB 0dB 0dB +2dB +4dB +6dB +8dB +10dB +12dB +14dB +16dB +18dB For example 12dB Treble and -8dB Bass give the following DATA BYTE: 0 0 1 1 1 0 0 1 Speaker Attenuators MSB LSB SPEAKER ATTENUATOR LF, LR, RF, RR D7 D6 D5 D4 D3 D2 D1 D0 X X X X X X X X X X X X X X X X X X X X X X 0 0 0 0 0 0 0 0 0 0 1 0 0 : 1 1 1 1 1 1 1 1 X 0 0 1 1 1 1 1 1 1 1 X 0 0 0 0 0 0 1 1 1 1 X 0 0 0 0 1 1 0 1 1 1 X 0 1 0 1 0 1 0 1 0 1 X 0dB -1dB : -24dB -25.5dB -27dB -28.5dB -30dB -32dB -34.5dB -37.5dB Speaker Mute normal range ±14dB TDA7434 7/10 |
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