AD9517-3 Calibration complete and cannot lock

Hello, 

we use ad9517-3  to generate 100MHz clock, we only use OUT0 OUT1;

the REF is 10MHz,

R = 1

when readback the register 0x01F, it is 0x4E;

the below is configuration data:

0 : dout <= 'h000099; // enable sdo;
1 : dout <= 'h001800; // VCO cal bit clear;
2 : dout <= 'h023201; // update all registers;
3 : dout <= 'h000401; // read back active registers
4 : dout <= 'h00107C; // PFD and charge pump, pll power;
5 : dout <= 'h001101; // R counter LSB
6 : dout <= 'h001200; // R counter MSB
7 : dout <= 'h001304; // A counter ; N = (P*B+A) B>A(DM)
8 : dout <= 'h001416; // B counter LSB
9 : dout <= 'h001500; // B counter MSB
10: dout <= 'h001604; // Prescaler P-DM,Divide-by-8
11: dout <= 'h001700; // anti-backlash pulse width
12: dout <= 'h001801; // VCO cal now
13: dout <= 'h001B20; // reference monitor
14: dout <= 'h001C02; // reference select 1
15: dout <= 'h001D00; //
16: dout <= 'h00F008; // OUT0 enable,780mv;
17: dout <= 'h00F108; // OUT1 enable,780mv;
18: dout <= 'h00F403; // OUT2 disable;
19: dout <= 'h00F503; // OUT3 disable
20: dout <= 'h014043; // OUT4 disable,;
21: dout <= 'h014143; // OUT5 disable,;
22: dout <= 'h014249; // OUT6 disable,;
23: dout <= 'h014349; // OUT7 disable;
24: dout <= 'h019010; // divider 0 cycles,DIV-3=100MHz,M+1+N+1,M=N+1 or M=N([7:4]Low Cycles:M, [3:0]High Cycles:N)
25: dout <= 'h019100; // use divider 0;
26: dout <= 'h019621; // divider 1 cycles,DIV-5,M+1+N+1,M=N+1 or M=N
27: dout <= 'h019944; // divider 2.1,DIV-10.,DIV-10,M+1+N+1,M=N+1 or M=N
28: dout <= 'h019B44; // Divider 2.2; DIV-10
29: dout <= 'h019C20; // Bypass Divider 2.2.
30: dout <= 'h019E76; // Divider 3.1 DIV-15; M+1+N+1; M=N+1
31: dout <= 'h01A076; // Divider 3.2; DIV-15
32: dout <= 'h01A120; // Bypass Divider 3.2
33: dout <= 'h01E004; // VCO divider value: 6
34: dout <= 'h01E102; // Instruction, select input(VCO) to VCO divider
35: dout <= 'h019100; // USE divider 0;
36: dout <= 'h023201; // Instruction, update all registers
37: dout <= {16'h801F, 8'h55}; // readback register 0x1F;
//37: dout <= {16'h8003, 8'hFF}; // readback Part ID register;

ad9517-3 cannot lock

is the configuration data right?

thank you!

K