TDA7418 Ver la hoja de datos (PDF) - STMicroelectronics

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TDA7418

3 Band car audio procesor

STMicroelectronics 

TDA7418

Description of the audioprocessor

4.11

MUX output

It provides a mono signal output (before tone filters) at mute/mux pin, used for external level

meter / spectrum analyzer.

The mute pin can be configured as MUX output (I2C Byte13_D7D1). When it is configured

as MUX output, the output voltage is (InGainL+InGainR)/2 with -3dB attenuation.

Figure 18. Mux output configuration

InGainL

+

InGainR

MUTE/MUX = (InGainL+InGainR)/2 * (-3dB)

AC00059

4.12

Audioprocessor testing

In the test mode, which can be activated by setting bit D7 of the IIC subaddress byte and bit

D0 of the testing audioprocessor byte, several internal signals are available at the SE2R pin.

In this mode, the input resistance of 100kOhm is disconnected from the pin. Internal signals

available for testing are listed in the data-byte specification.

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