In the Technical Reference Manual, I found "Configure MIO pin 46 for the RxD signal . Write 0x0000_12E1 to the slcr.MIO_PIN_46 register".
I just wanted to know why the 0x0000_12E1 corresponds to the RxD singal. I searched the characters "0x0000_12E1" in the TRM file, but no results returned. So there must not be any information about the mapping relationships between the IO singal and its vaules, such as the RxD singal correspondding to the "0x0000_12E1".
So where can I find the IO signal mapping relationshios?