N6: other packages in near future?

[LCE]

Oh boy, I'm frustrated...

Just when I thought I found the right MCU with the N6 (multi-channel audio over gigabit ethernet), I find in CubeMX and the datasheet that SAI2_SD_A and ETH1_CLK use the same pin. And I need both SAIs completely.

Very frustrating.

Using some I2S might be a solution, but these cannot be synced internally, aside from some other helpful features the SAIs have.

So, any other ideas, or will there be other packages where this pin-sharing problem might be solved?

[FBL]

Hi @LCE 

An internal ticket is submitted to dedicated team to check whether this is feasible. ( 227654)

[FBL]

Hi @LCE 

After checking with our experts, an interesting audio solution is RTSP + PCM over ethernet : in VENC_RTSP_Server. 

The application streams encoded H.264 video with optional audio.

To help you further, can you share more details about your multiple SAI usage?

Unfortunately, as you mentioned, SAI2_SD_A and ETH1_CLK I/O  are sharing the same pin PF5 and cannot be used at the same time.

[LCE]

> VENC_RTSP_Server.  I'll check that, thanks!

We need 2 SAIs and 2 blocks in each for 8 ADC channels.

Unfortunately, the ADCs we want to (/ must) use cannot work with TDM.

And using I2S... might be a PCB routing nightmare if done correctly considering EMI. (Apart from the fact that I had some problems on H7 using SAI and I2S in parallel and synced, some DMA issues I think)

[gregstm]

The original title question - "N6: other packages in near future?" - I would be curious to know the answer to that question...

[LCE]

I agree, independent of my initial problem with the shared pin.

[FBL · Accepted solution]

Hi @LCE 

Unfortunately, at this stage, there is no plan for additional STM32N6 package options to cover this case.