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Car Emergency Call (eCall) Audio System Reference Design

TIDA-00724

Overview

The efficiency and diagnostic capabilities required for automotive emergency call (eCall) systems create unique requirements for the audio subsystem, such as speaker diagnostics and low power consumption. This TI reference design shows how TI's automotive dual-channel audio codec (TLV320AIC3104-Q1) and Class D audio amplifier (TAS5411-Q1) can be used in eCall applications.

characteristic

● Integrated load dump protection reduces the cost and size of external voltage clamp circuits
● On-board load diagnostics report speaker status via I²C, reducing the number of external components required for diagnostic coverage
● TLV320AIC3104-Q1 + TAS5411-Q1 combination reduces power consumption, reduces heat and reduces peak current in electrical systems
● TAS5411-Q1 provides up to 8W output power to provide loud, clear audio in unpredictable emergency environments
● The additional outputs of the TLV320AIC3104-Q1 can be used to meet head units or other automotive audio needs and avoid the need to use other devices

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Blockdiagram

Design Files

Documentation

Car emergency call (eCall) audio subsystem reference design (Rev. A)

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