Hi,
I am working at DA7212 and I2S data. I have set DAI_WORD_LENGTH to 24-bits, but for me it seems like the DOUT is "only" 23-bit. The same happens if I set the length to 16-bits, the DOUT data seems to be 15-bits. I have attached a screenshot showing the I2S data. Yellow=BCLK, red=WCLK, blue=DOUT. Is it rigth that the DOUT is only 23-bits or am I missing something?
Attachment:
Device:
Hello,
We should be producing the correct number of bits for the selected DAI_Word_Length. I would ensure that there is no DAI_Offset being applied, which is a setting in the DAI.
Regards,
Hi,
Thank you for your answer.
I was wrong about the DOUT word length when DAI_WORD_LENGTH is set to 16-bits, the DA7212 DOUT output is 16-bits. When DAI_WORD_LENGTH is set to 20-bits, DA7212 also outputs 20-bits. But when DAI_WORD_LENGTH is set to 24-bits, we only get 23-bits of data. The same happens when we set DAI_WORD_LENGTH to 32 bit, we only get 23-bits of data.
DAI_FORMAT is set to I2S and DAI_FORMAT is set to default.
我有试着用DA运行相同的测试7218, and there everything looks as expected, DOUT is 24-bits.
I have attached the script I use for DA7212.