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TDA7406T 数据表(PDF) 42 Page - STMicroelectronics |
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TDA7406T 数据表(HTML) 42 Page - STMicroelectronics |
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42 / 49 page ![]() TDA7406T 42/49 Table 17. Stereodecoder (22) 1If De-emphasis-Shift enabled (Subaddr.26/Bit7 = 0) Table 18. Noiseblanker I (23) 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 0 1 Stereodecoder Input AM MPX 0 1 Forced MONO MONO/STEREO switch automatically 0 1 Pilot Threshold HIGH Pilot Threshold LOW 0 0 1 1 0 1 0 1 De-emphasis 50µs (37.5µs1) De-emphasis 62.5µs (46.9µs1) De-emphasis 75µs (56.3µs1) De-emphasis 100µs (75µs1) MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 Noiseblanker off Noiseblanker on 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Low Threshold 65mV Low Threshold 60mV Low Threshold 55mV Low Threshold 50mV Low Threshold 45mV Low Threshold 40mV Low Threshold 35mV Low Threshold 30mV 0 0 1 1 0 1 0 1 Noise Controlled Threshold 320mV Noise Controlled Threshold 260mV Noise Controlled Threshold 200mV Noise Controlled Threshold 140mV 0 0 1 1 0 1 0 1 Over deviation Adjust 2.8V Over deviation Adjust 2.0V Over deviation Adjust 1.2V Over deviation Detector OFF |
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