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FDA803U 데이터시트(PDF) 60 Page - STMicroelectronics

부품명 FDA803U
상세설명  1 x 45 W class D digital input automotive power amplifier with diagnostics, wide voltage operation range for car audio and telematic
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

FDA803U 데이터시트(HTML) 60 Page - STMicroelectronics

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I2C bus interface
FDA803U
60/76
DS12497 Rev 2
13.8
I2S, I2C and Enable relationship
FDA803U 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 FDA803U 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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