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AD9547/PCBZ 数据表(PDF) 82 Page - Analog Devices |
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AD9547/PCBZ 数据表(HTML) 82 Page - Analog Devices |
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82 / 104 page  AD9547 Rev. 0 | Page 82 of 104 Table 95. S Divider—Profile 11 Address Bit Bit Name Description 0x0654 [7:0] S S, Bits[7:0]. 0x0655 [7:0] S S, Bits[15:8]. 0x0656 [7:4] Unused Unused. [3:0] S S, Bits[19:16]. 0x0657 [7:0] Unused Unused. 1 The value stored in the S divider register yields an actual divide ratio of one more than the programmed value. Furthermore, the value of S must be at least 7. Table 96. Fractional Feedback Divider—Profile 1 Address Bit Bit Name Description 0x0658 [7:0] V V, Bits[7:0]. 0x0659 [7:4] U U, Bits[3:0]. [3:2] Unused Unused. [1:0] V V, Bits[9:8]. 0x065A [7:6] Unused Unused. [5:0] U U, Bits[9:4]. Table 97. Lock Detectors—Profile 1 Address Bit Bit Name Description 0x065B [7:0] Phase lock threshold (expressed in units of ps) Phase lock threshold, Bits[7:0]. 0x065C [7:0] Phase lock threshold, Bits[15:8]. 0x065D [7:0] Phase lock fill rate Phase lock fill rate, Bits[7:0]. 0x065E [7:0] Phase lock drain rate Phase lock drain rate, Bits[7:0]. 0x065F [7:0] Frequency lock threshold (expressed in units of ps) Frequency lock threshold, Bits[7:0]. 0x0660 [7:0] Frequency lock threshold, Bits[15:8]. 0x0661 [7:0] Frequency lock threshold, Bits[23:16]. 0x0662 [7:0] Frequency lock fill rate Frequency lock fill rate, Bits[7:0]. 0x0663 [7:0] Frequency lock drain rate Frequency lock drain rate, Bits[7:0]. 0x0664 to 0x067F [7:0] Unused Unused. Register 0x0680 to Register 0x06B1—Profile 2 Table 98. Priorities—Profile 2 Address Bit Bit Name Description 0x0680 [7:6] Unused Unused. [5:3] Promoted priority User-assigned priority level (0 to 7) of the reference associated with Profile 2 while that reference is the active reference. The numeric value of the promoted priority must be less than or equal to the numeric value of the selection priority. [2:0] Selection priority User-assigned priority level (0 to 7) of the reference associated with Profile 2, which ranks that reference relative to the others. Table 99. Reference Period—Profile 2 Address Bit Bit Name Description 0x0681 [7:0] Reference period (expressed in units of fs) Nominal reference period, Bits[7:0]. 0x0682 [7:0] Nominal reference period, Bits[15:8]. 0x0683 [7:0] Nominal reference period, Bits[23:16]. 0x0684 [7:0] Nominal reference period, Bits[31:24]. 0x0685 [7:0] Nominal reference period, Bits[39:32]. 0x0686 [7:0] Unused Unused. Write 0s to these bits. 0x0687 [7:0] |
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