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TDA7440D データシート(PDF) 9 Page - STMicroelectronics |
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TDA7440D データシート(HTML) 9 Page - STMicroelectronics |
9 / 17 page 9/17 TDA7440D 5.2 POWER ON RESET CONDITION Table 6. 5.3 DATA BYTES Address = 88 HEX (ADDR:OPEN). Table 7. FUNCTION SELECTION: First byte (subaddress) B = 1: INCREMENTAL BUS ACTIVE B = 0: NO INCREMENTAL BUS X = DON’T CARE In Incremental Bus Mode, the "not used" function must be addressed in any case. For example to refresh "Volume = 0dB" and Speaker_R = -40dB", the following bytes must be sent: Table 8. Table 9. INPUT SELECTION INPUT SELECTION IN2 INPUT GAIN 28dB VOLUME MUTE BASS 0dB TREBLE 2dB SPEAKER MUTE MSB LSB SUBADDRESS D7 D6 D5 D4 D3 D2 D1 D0 X X X B 0 0 0 0 INPUT SELECT X X X B 0 0 0 1 INPUT GAIN X XXB 0 0 1 0 VOLUME X XXB 0 0 1 1 BASS X XXB 0 1 0 0 NOT USED X XXB 0 1 0 1 TREBLE X X X B 0 1 1 0 SPEAKER ATTENUATE "R" X X X B 0 1 1 1 SPEAKER ATTENUATE "L" SUBADDRESS XXX10010 VOLUME DATA X0000000 BUS DATA XXXX1111 NOT USED DATA XXXX1111 TREBLE DATA XXXX1111 SPEAKER_R DATA X0000010 MSB LSB INPUT MULTIPLEXER D7 D6 D5 D4 D3 D2 D1 D0 XXXXXX 0 0 IN4 XXXXXX 0 1 IN3 XXXXXX 1 0 IN2 XXXXXX 1 1 IN1 |
同様の部品番号 - TDA7440D |
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同様の説明 - TDA7440D |
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