TIDUFC9 May   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Codec Design
      2. 2.2.2 Class-D Amplifier
        1. 2.2.2.1 Audio Filter Design
      3. 2.2.3 Power Design
      4. 2.2.4 EMC, EMI Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 TAC5312-Q1
      2. 2.3.2 TAS5441-Q1
      3. 2.3.3 LMR43620-Q1
      4. 2.3.4 TPS7A52-Q1
      5. 2.3.5 TPD2E007
  9. 3Hardware, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Board Connection
      2. 3.1.2 Configuring the Board
    2. 3.2 Software Requirements
      1. 3.2.1 Firmware for Bench Tests
    3. 3.3 Test Setup
    4. 3.4 Test Results
      1. 3.4.1 Audio Performance
      2. 3.4.2 Power Tests
      3. 3.4.3 EMI, EMC Test Results
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 Bill of Materials
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
      6. 4.1.6 Assembly Drawings
    2. 4.2 Documentation Support
    3. 4.3 Support Resources
    4. 4.4 Trademarks
  11. 5About the Author

3.1.1 Board Connection

The hardware design includes the blocks discussed previously as well as a AC-MB to send I2C commands to the TAS5441-Q1, the TAC312-Q1, and to monitor input diagnostics. In the final system, the AC-MB controller is replaced with an automotive compatible MCU. Figure 3-1 shows the block diagram of the design with the AC-MB. When evaluating this design; however, using the I2C bus is all that is needed, so any I2C controller can be used.

TIDA-060048 TIDA-060048 Full Block DiagramFigure 3-1 TIDA-060048 Full Block Diagram
Table 3-1 Connectors
DESIGNATORNAMEDESCRIPTION
J1Speaker OutputConnect the speaker load across pins 1 and 2 of J1
J2Power Supply InputPower supply input (5V–18V)
J3Codec Line OutputConnect directly to MCU or speaker amplifier across pins 1 and 2 of J3
J4I2S busI2S bus connection for MCLK, BCLK, FSYNC, DIN, and DOUT
J5External microphone inputTo use an external microphone, remove R15 and R16
J6Recording Diagnostics (EVAL. only)Place a jumper on the J6 pin 1 and 2 or pin 2 and 3 for INxP diagnostic test
J7I2CConnect SCL and SDA line directly for external I2C control
J8Power Supply SourcePlace a jumper on pin 1 and 2 for 3.3V supply to be derived from VBAT. Place a jumper on pin 2 and 3 for 3.3V supply to be derived from AC-MB
J9AC-MB (EVAL. only)AC-MB connects here
J10Recording Diagnostics
(EVAL. only)		Place a jumper on the J10 pin 1 and 2 or pin 2 and 3 for INxM diagnostic test
J12Diagnostics (EVAL. only)Position 1 - INx Short to MICBIAS; Position 2 - INx Short to VBAT
Position 3 - Inputs short together; Position 4- INx Short to GND
SW1Diagnostics Trigger (EVAL. only)Press switch to trigger J12 fault
SW2Diagnostics Switch (EVAL. only)Left position enables J6, right position enables J10