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PIC18LF4520-VS1011b Communication Problem

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contagiouseddie

contagiouseddie

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vs1011b

Hello,

I have designed an audio player using PIC18LF452 with VS1011b. It works totally fine until I have decided to change the controller to PIC18LF4520 (revised version of PIC18LF452). I used SPI to communicate and the MP3 decoder IC doesn't seems to responds in any how. The Data Request (DREQ pin of VS1011b) does not go down and is held high all the time. I have even make sure the pins configuration of PIC18LF4520 confined to the new configuration. There's no output on the VS1011b IC although I pumped in audio file data.

Help...

Thank you very much.
 

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