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LMK04803: PLL2 is not locked.

Part Number: LMK04803

Hello

I designed LMK04803 board,  and  the registers generated  byTICS Pro. PLL2 is not locked. 

Input clock frequency: 40MHz,COMS;

Output clock frequency:80MHz, LVDS, x10;

Mode:PLl2,Int VCO, 0-Delay。

The HEX-file generated by TICS Pro:

HexRegisterValues-E.txt
R0 (INIT)	0x80160100
R0	0x00140300
R1	0x00140301
R2	0x00140302
R3	0x00140303
R4	0x00140304
R5	0x10140305
R6	0x11110006
R7	0x11110007
R8	0x0611B808
R9	0x55555549
R10	0x9142590A
R11	0x41F0100B
R12	0x130C006C
R13	0x3B02800D
R14	0x0200000E
R15	0x8000800F
R16	0xC1550410
R24	0xAC000058
R25	0x02C9C419
R26	0xAFA8001A
R27	0x1000009B
R28	0x0010009C
R29	0x0080031D
R30	0x040000DE
R31	0x001F001F

The Schematic:

The noise of the VCC_PLL_COM is 30~40mVpp.The regisisters readbacked was normal.

Thank you.