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TDA7718B 数据表(PDF) 36 Page - STMicroelectronics |
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TDA7718B 数据表(HTML) 36 Page - STMicroelectronics |
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36 / 40 page ![]() I2C bus specification TDA7718B 36/40 DocID18305 Rev 3 Table 18. Speaker attenuation (FL/FR/RL/RR/SWL/SWR) (13-18) MSB LSB Function D7 D6 D5 D4 D3 D2 D1 D0 - 0 0 : 0 0 0 : 1 1 1 0 0 : 0 0 0 : 0 0 1 0 0 : 0 1 1 : 1 1 x 0 0 : 1 0 0 : 1 1 x 0 0 : 1 0 0 : 1 1 x 0 0 : 1 0 0 : 1 1 x 0 1 : 1 0 1 : 0 1 x Gain/attenuation 0dB 1dB : +15 dB -0 dB -1 dB : -78 dB -79 dB mute 0 1 -- - - - - - Soft-step action Act Wait Table 19. Testing audio processor 1 (19) MSB LSB Function D7 D6 D5 D4 D3 D2 D1 D0 -- -- - - - 0 1 Audio processor testing mode Off On -- - 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 - Test multiplexer at SE1L (1) SSCLK REQ SMCLK DCDet Vth High DCDet Vth Low IntZeroErr Ref5V5 VGB1.95 Clock200k SDCLK VrefDCO -- 0 1 -- - - - Clock fast mode (2) On Off -0 1 -- - - - - Clock source (2) External Internal (200 kHz) 0 1 -- - - - - - Attenuator gain clock control (2) On Off 1. The control bit needs both I2C test mode on & sub-address test mode on. 2. The control bit does not depend on test mode. |
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