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FDA903D 数据表(PDF) 27 Page - STMicroelectronics |
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FDA903D 数据表(HTML) 27 Page - STMicroelectronics |
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27 / 82 page  DocID031502 Rev 2 27/82 FDA903D Finite state machine 81 7.5 MUTE-PLAY and diagnostic states The amplifier can move from ECO-mode state to MUTE state selecting "PWM-ON" via I2C. This operation turns-on the output PWM. FDA903D can move to PLAY state (from MUTE state) via "PLAY" I2C command and returns to MUTE state from PLAY state acting on the same bit. Transition time between mute and play states could be selected via I2C. Some external conditions could lead the amplifier in mute state automatically: Low battery mute High battery mute Thermal mute Hardware pin mute Once mute condition is no more present the FDA903D will return automatically in PLAY state, following I2C register program set. Of course the user can decide to change the amplifier programming in the meanwhile, thus avoiding the automatic return in PLAY. From MUTE state the user can also select to enter DC diagnostic state. |
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