I2S3_CK signal - problem with connection to stm32

krzkrok · ‎2011-10-10

Posted on October 10, 2011 at 15:27

I am working on stm32f217 144pins.

I try to connect signal I2S3_SCK to stm32 but all two pins (pin nr 111 and pin nr 133) which provide this connection are used by other peripherials.These pins share functionality with JTAG and SD card. Apart from use two I2S ports for audio stream I would like to connect JTAG and SD card to stm32. The problem is, that only possible connection SDIO_D2 signal to stm32 is by pin 111, and only possible connection JTD0 signal to stm32 is by pin 133. So, in my case I don't have free pin to connect I2S3_SCK signal. So I have a question, how can I manage to connect all three signals to stm32?

Please help me.

Tesla DeLorean · ‎2011-10-10

Posted on October 10, 2011 at 16:42

Can you use SWD instead of full JTAG?

To use other functionality you'll need to map/remap the peripherals as you need them, because you're pin constrained and they won't work together.

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krzkrok · ‎2012-08-13

Posted on August 13, 2012 at 11:11

I followed your advice and chose SWD insted of JTAG. Thanks a lot.