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TDA7403 数据表(PDF) 22 Page - STMicroelectronics |
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TDA7403 数据表(HTML) 22 Page - STMicroelectronics |
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22 / 26 page ![]() Speaker Attenuation (LF, LR, RF, RR) MSB LSB D7 D6 D5 D4 D3 D2 D1 D0 11 0 0 : 0 0 0 0 0 0 0 0 0 1 0 0 : 1 1 1 1 1 1 1 1 1 0 0 : 0 1 1 1 1 1 1 1 1 0 0 : 1 0 0 0 0 1 1 1 1 0 0 : 1 0 0 1 1 0 0 1 1 0 1 : 1 0 1 0 1 0 1 0 1 Attenuation 0dB -1dB : -23dB -24.5dB -26dB -28dB -30 -32dB -35dB -40dB -50dB Speaker Mute Must be ”1” (except RR speaker; see below) 0 0 1 1 0 1 0 1 Blank Time adj. (only at RR speaker) 38 µs 25.5 µs 32 µs 22 µs Stereodecoder MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 STD Unmuted STD Muted 0 0 1 1 0 1 0 1 IN-Gain 11dB IN-Gain 8.5dB IN-Gain 6dB IN-Gain 3.5dB 1 must be ”1” 1 1 0 1 Forced MONO MONO/STEREO switch automatically 0 1 Pilot Threshold HIGH Pilot Threshold LOW 0 1 Deemphasis 50 µs Deemphasis 75 µs TDA7403 22/26 |
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