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TDA7402 데이터시트(PDF) 52 Page - STMicroelectronics |
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TDA7402 데이터시트(HTML) 52 Page - STMicroelectronics |
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52 / 71 page ![]() I2C bus interface TDA7402 52/71 Note: It is not recommended to use a gain more than 20dB for system performance reason. In general, the maximum gain should be limited by software to the maximum value, which is needed for the system. Table 15. Volume (2) MSB LSB Attenuation D7 D6 D5 D4 D3 D2 D1 D0 0 0 : 0 0 0 : 0 0 0 : 1 1 0 0 : 0 0 0 : 0 1 1 : 1 1 0 0 : 0 0 0 : 1 0 0 : 0 0 0 0 : 1 1 1 : 1 0 0 : 1 1 0 0 : 1 1 1 : 1 0 0 : 1 1 0 0 : 0 0 0 : 1 0 0 : 1 1 0 0 : 0 0 1 : 1 0 0 : 1 1 0 1 : 0 1 0 : 1 0 1 : 0 1 Gain/attenuation (+32.0dB) (+31.5dB) : +20 .0dB +19.5dB +19.0dB : +0.5dB 0.0dB -0.5dB : -79.0dB -79.5dB Table 16. Treble filter (3) MSB LSB Function D7 D6 D5 D4 D3 D2 D1 D0 0 0 : 0 0 1 1 : 1 1 0 0 : 1 1 1 1 : 0 0 0 0 : 1 1 1 1 : 0 0 0 0 : 1 1 1 1 : 0 0 0 1 : 0 1 1 0 : 1 0 Treble steps -15dB -14dB : -1 dB 0 dB 0 dB +1 dB : +14 dB +15dB 0 0 1 1 0 1 0 1 Treble center frequency 10.0 kHz 12.5 kHz 15.0 kHz 17.5 kHz 0 1 Subwoofer + center speaker mode On Off |
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