STR R1, [R0, #LOCKTIME_OFS]
STR R2, [R0, #CLKDIVN_OFS]
STR R3, [R0, #UPLLCON_OFS]
nop
nop
nop
nop
nop
nop
nop
STR R4, [R0, #MPLLCON_OFS]
STR R5, [R0, #CLKSLOW_OFS]
STR R6, [R0, #CLKCON_OFS]
STR R7, [R0, #CAMDIVN_OFS]
UPLL为什么要在MPLL之前设置,而且MPLL要在7个NOP之后才能设置MPLL