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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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FDA903U датащи(PDF) 24 Page - STMicroelectronics |
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FDA903U датащи(HTML) 24 Page - STMicroelectronics |
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24 / 80 page  Finite state machine FDA903U 24/80 DS12498 Rev 2 6.1 Device state and address selection Through Enable pins configuration it is possible to select different I2C addresses (up to 8) or to configure the device in 4 different legacy ('no I2C' modes) according to table 6. In this way, up to 8 devices can be easily used in the same application with a single I2C bus. Moreover it is possible to work without I2C configuring the voltage range and switching mode to be used. When a valid combination of Enable 1/2/3/4 is recognized the device turns on all the internal supply voltages and outputs are biased to Vcc/2. The internal I2C registers are pre-settled in "default condition", waiting for the I2C next instruction. The return in the Standby condition, (all enable pins at 0), will cause the reset of the amplifier. As defined in the finite state machine, The same event will happen if PLL is not locked, I2S is missing or not correct, Vcc for system reset. FDA903U can work only in I2C slave mode. Table 6. Operation mode Enable 1 Enable 2 Enable 3 Enable 4 Stand By 0 0 0 0 Amplifier ON address 1 = ‘1110000’ 0 1 0 0 Amplifier ON address 2 = ‘1110001’ 1 1 0 0 Amplifier ON address 3 = ‘1110010’ 0 0 1 0 Amplifier ON address 4 = ‘1110011’ 0 1 1 0 Amplifier ON address 5 = ‘1110100’ 0 1 0 1 Amplifier ON address 6 = ‘1110101’ 1 1 0 1 Amplifier ON address 7 = ‘1110110’ 0 0 1 1 Amplifier ON address 8 = ‘1110111’ 0 1 1 1 Legacy mode: low voltage mode; in-phase 1 1 1 0 Reserved 1 1 1 1 Legacy mode: standard voltage mode; in-phase 1 0 0 0 Reserved 1 0 0 1 |
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