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FDA903D Datasheet(PDF) 63 Page - STMicroelectronics

Part # FDA903D
Description  1 x 45 W class D digital input automotive power amplifier with ILoad current monitoring, wide voltage operation range for car audio and telematic
PDF  82 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

FDA903D Datasheet(HTML) 63 Page - STMicroelectronics

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FDA903D
I2C bus interface
81
14.8
I2S, I2C and Enable relationship
FDA903D provides both I2C and I2S communication by means of two different digital
interfaces but connected to each other interfaces and clock domains.
To program the I2C interface the I2S clock must be present, and at least 10 ms should have
passed from the Enable pins setting event.
In FDA903D the digital part has different clock domains:
The I2C programming block clock is the I2C clock
The I2S receiver clock which is the I2S clock
The system clock which is generated by an internal PLL.
The I2C commands are not effective if I2S clock is not present. However they will remain
memorized inside I2C registers.
If I2S clock is lost the digital machine goes in standby.
I2S clock (SCK) should be given to device before enabling it (Enable pins set to ‘out of
standby’).



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