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TDA7449D Datasheet(PDF) 10 Page - STMicroelectronics |
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TDA7449D Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 19 page TDA7449 10/19 6.2 Incremental Bus The TDA7449 receive a start conditions, the correct chip address, a subaddress with the B = 1 incremental bus): now it is in a loop condition with an autoincrease of the subaddress whereas SUBADDRESS from "XXX1000" to "XXX1111" of DATA are ignored. The DATA 1 concern the subaddress sent, and the DATA 2 concern the subaddress sent plus one in the loop etc, and at the end it receivers the stop condition. Figure 17. Table 6. POWER ON RESET CONDITION 7 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 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 X XB0 0 1 0 VOLUME X X XB0 0 1 1 NOT ALLOWED X X XB0 1 0 0 BASS X X XB0 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" S 1 0 0 0 1 0 0 0 ACK ACK DATA ACK P MSB LSB MSB LSB MSB LSB CHIP ADDRESS D96AU422 X D3 SUBADDRESS DATA 1 to DATA n X X 1 D2 D1 D0 |
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