TIDA-00724 Reference Design

Texas Instruments

Automotive Emergency Call (eCall) Audio Subsystem Reference Design


The efficiency and diagnostics necessary for automotive emergency call (eCall) systems generate unique requirements for the audio subsystem, such as speaker diagnostics, and low power consumption.  This TI Design shows how to use TI's automotive two-channel audio codec (TLV320AIC3104-Q1) and a class-D audio amplifier (TAS5411-Q1) for eCall applications.

  • The integrated load-dump protection reduces external voltage clamp cost and size
  • Onboard load diagnostics report the status of the speaker through I2C, which reduces external components needed for diagnostic coverage
  • TLV320AIC3104-Q1 + TAS5411-Q1 combo allows for reduced power consumption, reduced heat and reduced peak currents in the electrical system
  • TAS5411-Q1 provides up to 8W output power for loud, clear audio in an unpredictable emergency environment
  • Additional output from the TLV320AIC3104-Q1 can be used for the head unit or other car audio needs and eliminates the need for another device
  • Telematics Control Unit
Product Categories
  • Audio


Part Number Name Companion Part
TLV320AIC3104-Q1 TLV320AIC3104-Q1 Buy Datasheet
TPD2E007 TPD2E007 Buy Datasheet

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
Automotive Emergency Call (eCall) Audio Subsystem Design Guide 13 Nov 2015 PDF 1718
TIDA-00724 Altium 15 Dec 2015 ZIP 1055
TIDA-00724 PCB 15 Dec 2015 PDF 2075
TIDA-00724 Assembly Drawing 15 Dec 2015 PDF 267
TIDA-00724 BOM 15 Dec 2015 PDF 230
TIDA-00724 Schematic 15 Dec 2015 PDF 854
TIDA-00724 Gerber 15 Dec 2015 ZIP 1964