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FDA803D-EHT データシート(PDF) 48 Page - STMicroelectronics

部品番号 FDA803D-EHT
部品情報  1 x 45 W class D digital input automotive power amplifier with diagnostics, wide voltage operation range for car audio and telematic
PDF  78 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

FDA803D-EHT データシート(HTML) 48 Page - STMicroelectronics

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Diagnostic
FDA803D
48/78
DocID031487 Rev 2
11.10
Watch-dog
The user can enable an internal watch-dog, setting I2C IB9[4]='1'.
The function is based on a timer which is reset at each Word Select line rising edge, and
which reaches the timeout in:
2.9 ms if fs = 44.1 kHz;
2.7 ms if fs = 48 kHz, 96 kHz, 192 kHz.
When the timer reaches the timeout, the function performs two operations:
Sends a muting command to the amplifier
Sets a flag on DB6[2]
In case of timeout, the muting command is released as soon as the timer is reset by a new
Word Select line edge.
11.11
Error frame check
The device integrates a function called "Error frame check", which is permanently enabled.
The function counts the number of rising edges received on the Clock line, starting from
each rising edge of Word Select line. At the end of the data frame, marked by the
subsequent rising edge on Word Select line, the function checks that the reached count is
coherent with the I2C configuration of the I2S protocol.
In case the function detects an error, the device sets a flag on DB6[1].



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