Hi Shuai Na, The power up sequence for the LM96551 on the TX-SDK-V1 is essential, or the chip will get damaged . I think the other devices on the EVM are not affected. If you can send me the EVM plus fresh LM96551 device (no longer available on ) I can have these replaced on your EVM and then send the reworked EVM back to you. You'd have to do some searching to find the LM96551. Here is a possible source for purchase: Please contact me at the email address below, if you'd like to do this: hooman.hashemi@ti.com Regards, Hooman
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