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ADAU1452 GPIO

SigmaDSP & SigmaStudio stmoeller60 Nov 18, 2014 00:00 4 replies Original on forum ↗
ICs: ADAU1452
#audio+signal+processors#adau1452#sigmadsp+audio+processors#gpio
Thread Summary

Thread Summary

The user questioned the accuracy of Table 4 in UG-636, noting that GPIO MP5 is listed as TP38, which the schematic shows as ADC1LN. The support engineer confirmed the discrepancy by tracing the GPIOs with known waveforms, indicating that the table is incorrect. Another user reported similar issues with GPIO pins but found the AUX ADC functionality to be working correctly.
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stmoeller60 Question
Nov 18, 2014 00:00

In the Evaluationboard User Guide ( UG-636) is written, that GPIO MP5 is on TP38.

If I look on the schematic of UG-636 : TP38 is analog input channel ADC1LN.

Is the table 4. Multipurpose pins , GPIO's on page 16 wrong ?

Audio Signal Processors

adau1452

SigmaDSP Audio Processors

gpio

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stmoeller60 Reply
Nov 20, 2014 00:00

Any idea ?

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tuomy Reply
Nov 20, 2014 00:00

I'm having the same issue and problems---in fact I can't get any of the GPIO pins to work at all, though the a AUX ADC stuff works fine..

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KJBob Reply
Nov 21, 2014 00:00

Hi,

I traced the GPIOs by sending them known waveforms as shown below:

Best regards,

Bob

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a24927368d7a864452a7ceda357a7524.png-285x145.png
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stmoeller60 Reply
Nov 28, 2014 00:00

Thanks very much. Now it works.

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