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FDA903U bảng dữ liệu(PDF) 24 Page - STMicroelectronics

tên linh kiện FDA903U
Giải thích chi tiết về linh kiện  1 x 45 W class D digital input automotive power amplifier with ILoad current monitoring, wide voltage operation range for car audio and telematic
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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FDA903U bảng dữ liệu(HTML) 24 Page - STMicroelectronics

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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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