Hi HIMANSHU DOSHI ,
Thank you for your interest in NXP Semiconductor products and
for the opportunity to serve you.
The LPC54114 only support the little endian mode and the endian mode can't be changed afterward.(There is no dynamic endian switching, and the SETEND instruction is not supported.). however, you can easily convert the data between little endian and big endian using some of the new instructions in the Cortex-M3. For example, REV and REVH are very useful for this kind of conversion.

Have a great day,
TIC
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