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[ PLLONSTART
ldr r0,=PLLCON ;temporary setting of PLL
; //change 0xf3(M-DIV)to0x34,change 0x04(P-DIV)to 0x03,change 0x02(S-DIV) to 0x01
; // 0xf3 0x04 0x02
ldr r1, =((0x34<<12)+(0x3<<4)+0x01) ;Fin=4MHz,Fvco=160Mhz,Fout=40MHz,m/p/s=0x48/0/0x2
; ldr r1, =((0x8e<<12)+(0x3<<4)+(0x1)) ; ArmingYJ: 1 ----> 60 Mhz 有问题
; ldr r1, =((0x75<<12)+(0x3<<4)+(0x1)) ; 2 ----> 48 Mhz
; ldr r1, =((0x84<<12)+(0x3<<4)+(0x2)) ; 3 ----> 42 Mhz
; ldr r1, =((0x5c<<12)+(0x3<<4)+(0x2)) ; 4 ----> 24 Mhz
; ldr r1, =((0x98<<12)+(0x3<<4)+(0x4)) ; 5 ----> 8 Mhz
str r1,[r0]
]