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TDA7403 数据表(PDF) 23 Page - STMicroelectronics |
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TDA7403 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 25 page ![]() Stereodecoder Adjustment MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 : 1 : 1 0 0 1 : 0 : 1 0 1 0 : 0 : 1 Roll-Off Compensation not allowed 20.2% 21.9% : 25.5% : 31.0% 0 0 0 : 1 0 0 0 : 1 0 0 1 : 1 0 1 0 : 1 LEVEL Gain 0dB 0.66dB 1.33dB : 10dB 0 1 Temperature compensation at LEVEL input TC = 0 TC = 16.7mV/K (3300ppm) Testing MSB LSB FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 0 1 Stereodecoder test signals OFF Test signals enabled if bit D5 of the subaddress (test mode bit) is set to "1", too 0 1 External Clock Internal Clock 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Testsignals at CASS_R VHCCH Level intern Pilot magnitude VCOCON; VCO Control Voltage Pilot threshold HOLDN NB threshold F228 VHCCL VSBL not used not used PEAK not used REF5V not used 0 1 VCO OFF ON 0 1 Audioprocessor test mode only if bit D5 of the subaddress (test mode bit) is set to "1" OFF Note : This byte is used for testing or evaluation purposes only and must not be set to other values than the default "11111110" in the application! TDA7403 23/25 |
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