Questions about the 8ch I2S/PCM RK3288 peripheral

FesterBester38

Hello,

I have some questions regarding the 8ch I2s/PCM peripheral inside the RK3288 SoC (chapter 16 of the manual).

Q1: looking at the timing diagrams starting on page 752 (sections 16.3.1 to 16.3.7), it seems that I2S allows 1 stereo channel only per output, while the DSP/PCM mode allows from 1 to 4 stereo channels on a single output (SDO0). Is it right?

Q2: the peripheral control registers list shows only 1 transmit fifo data register (I2S_TXDR on page 765). How is this unique TX data register connected to the 4 TX FIFOs?

Q3: for that matter what I understand is that the I2S_TXCR::CSR field (page 756) sets the number of stereo channels AND the number of used TX FIFOs. In PCM mode the n FIFOS can be seen as a single FIFO with a depth equal to 32 x n. Is it right?

Q4: in I2S mode, each FIFO is routed to the corresponding I2S_SDOx output. Is it right?

Q5: from the ES8323 codec data sheet it seems that this codec manages only a single stereo stream, wether configured as an I2S or a PCM device. So this would mean that it is not possible to send more than 2 channels when using the firefly board as is. Is it right?

Thanks.

willlee345

Your article was incredibly refreshing, thank you. The Reliable free 300-540 study guide helped me secure a promotion and salary raise. Now it’s free to all. Best wishes for your career advancements!

johnree759

Perfect content, I’m clicking like immediately. Best of luck on your exam! Here’s the free C1 exam question content.

johnmil512

Thank you for your article, it was a true eye-opener. The Demo PDI test questions were key in securing my promotion and raise—now it’s your turn! Get them for free!

nickjac697

PDFExamDumps不僅為你提供優秀的資料，而且還為你提供優質的服務。如果你購買了PDFExamDumps的考古題，PDFExamDumps將為你提供一年的免費更新。這樣你就可以一直擁有最新的AZ-500試題資料。而且，萬一你用了AZ-500考古題以後，考試還是失敗的話，PDFExamDumps保證全額退款。這樣一來，你還擔心什麼呢？PDFExamDumps對自己的資料有足夠的信心，你也要對PDFExamDumps有足夠的信心。為了你的考試能夠成功，千萬不要錯過PDFExamDumps這個網站。因為如果錯過了它，你就等於錯失了一次成功的機會。