Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Alif Semiconductor/AE302F40C1537LE_CM55_HP_View/CDC/CDC_IRQ_CLEAR0#0x0
IRQ Clear Register
Clear line IRQ.
Clear FIFO underrun warning IRQ.
Clear bus error IRQ.
Clear register reload IRQ.
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https://github.com/cmsis-svd/cmsis-svd-data