VS1053 i2S HAVE NOISE

Writing software that inputs and/or outputs audio and performs DSP algorithms such as filters, new codecs or audio effects.
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u012801
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Posts: 1
Joined: Sun 2018-02-04 19:10

VS1053 i2S HAVE NOISE

Post by u012801 » Sun 2018-02-04 19:39

hi:

I test vs1053 I2S output
but noise very large
it sounds zi... Zi...
sowtware onley set

To enable I2S first write 0xc017 to SCI_WRAMADDR and 0x00f0 to SCI_WRAM, then write
0xc040 to SCI_WRAMADDR and 0x000c to SCI_WRAM.

I2S out pin no connect anything, headset sounds ok .
I2S out pin connect to DAC input have zi.. zi very large noise

how to fix ti

thanks very much

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pasi
VLSI Staff
Posts: 1503
Joined: Thu 2010-07-15 16:04

Re: VS1053 i2S HAVE NOISE

Post by pasi » Mon 2018-02-05 16:52

What is the I2S DAC you are using?

Is the I2S DAC configured for I2S mode (instead of DSP mode)?

Does the I2S DAC support 16 bits with the MCLK and I2S_CLK you get?
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