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关于HMC765寄存器配置问题

pasqal 在 2017-2-20 詢問的問題
最後回覆由John.MW於2017-2-28提供

谁能给一种整数分频的典型寄存器配置方案

我现在不管寄存器配置成7.8G、8G还是8.8G,输出一直震荡在8.2G左右不受控制啊

环路滤波器的带宽都设置成1M了,鉴相频率是10M,参考输入50M。

目前的配置是这样的:

4'd0:ctrl_word <= 32'b0_000000_0000_0000_0000_0000_0000_0001_0;//00h

4'd1:ctrl_word <= 32'b0_000001_0000_0000_0000_0000_1000_0110_0;//01h       

4'd2:ctrl_word <= 32'b0_000010_0000_0000_0000_0000_0000_0101_0;//02h R div                      

4'd3:ctrl_word <= 32'b0_000100_0011_0011_0011_0011_0011_0011_0;//04h                       

4'd4:ctrl_word <= 32'b0_000101_0101_0000_1000_1001_0100_1100_0;//05h                       

4'd5:ctrl_word <= 32'b0_000110_0111_0000_0001_0000_1000_0111_0;//06h               

4'd6:ctrl_word <= 32'b0_000111_0000_0000_0000_0100_1111_1010_0;//07h                       

4'd7:ctrl_word <= 32'b0_001000_0000_0000_0011_0001_1111_1111_0;//08h                       

4'd8:ctrl_word <= 32'b0_001001_1001_0010_0010_0000_0000_0000_0;//09h                   

4'd9:ctrl_word <= 32'b0_001010_0000_0000_0000_0000_0000_0000_0;//0Ah                   

4'd10:ctrl_word <= 32'b0_001011_0000_0000_0000_0010_0111_0010_0;//0Bh                   

4'd11:ctrl_word <= 32'b0_001100_0000_0000_0000_0000_0000_0000_0;//0Ch                   

4'd12:ctrl_word <= 32'b0_001101_0000_0000_0000_0000_0000_1011_0;//0Dh                       

4'd13:ctrl_word <= 32'b0_000011_0000_0000_0000_0011_0010_0000_0;//03h N div

結果