do you at TI have a recommended crystal for the TMS570LC4357?...I was using a LFXTAL071255REEL IQXC-42 AUTO grade crystal.
just looking for any guidance if any.
No, we don't recommend any particular crystal for the TMS570LC4357.
From a practical standpoint, pick a crystal and start development then send a sample to a crystal vendor to confirm. You're very unlikely to run into any issue on your development units as long as you match what the crystal vendor says for loading caps.
But before getting into high volume builds you should do what the datasheet says and get the crystal vendor to give you a recommended matching crystal and tank circuit based on testing a sample.
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