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BF516 SPORT1 secondary TX channel

Category: Software
Product Number: BF516

I have a BF516 based board that must use SPORT1 TX and SPI1 at the same time.

For this I try to use SPORT1 secondary TX data channel only.

Both PRI and SEC TX data channels are configured and feed with data, but only SEC is allowed in PORTH_MUX register and PRI channel pin is used by SPI1.

In this configuration SEC TX pin outputs some strange garbage.

If I enable PRI pin in POTRH_MUX everything works but I cannot use SPI1.

Is this a known hardware limitation and is there any workaround?

fixed typo
[edited by: APetrov at 2:54 PM (GMT -4) on 14 Jun 2022]