SYSCON MAINCLKUEN addressOffset = 0x074

This register updates the clock source of the main clock with the new input clock after the MAINCLKSEL register has been written to. In order for the update to take effect, first write a zero to bit 0 of this register, then write a one.

Table 1. SYSCON registerName = MAINCLKUEN addressOffset = 0x074
Bit Symbol Value Description Reset value
0 ENA   Enable main clock source update 0
    0 No change  
    1 Update clock source  
31:1 - - Reserved -