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TAS5558: Evaluate TAS5558 on TAS5548EVM

Part Number: TAS5558
Other Parts Discussed in Thread: TAS5342, TAS5548

Hi Experts:

Customer want use TAS5558 + TAS5342 for 5.1 speakers.

Customer have bought TAS5548EVM, it can work normally with the control of the GUI. But, after use TAS5558 for the replacement, then GUI display a message that USB is connected but no device found on 0x34. We make sure the ASEL pin is low. 

Switch back to the original TAS5548 chip, the TAS5548EVM also can work normally.

Is there any difference between TAS5558 and TAS5548? Is there something else need to modify?

  • Hi user4013453-san,

    Please modify TAS5548EVM as below if replacing TAS5548 with TAS5558 on TAS5548EVM since TAS5558 doesn't support the external crystal.

    - Modification
    1. Remove C17, C18, Y2 and R23
    2. Replace C18 with 18.2kΩ Resistor(1% Tolerance)
    3. Assemble R24 with 47Ω Resistor
    4. Replace TAS5548(U1) with TAS5558

    Best regards,
    Kato