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AD9548/PCBZ 数据表(PDF) 83 Page - Analog Devices |
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AD9548/PCBZ 数据表(HTML) 83 Page - Analog Devices |
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83 / 112 page  AD9548 Rev. 0 | Page 83 of 112 Table 77. Phase Build-Out Switching Address Bits Bit Name Description 0507 [7:3] Unused [2:0] Phase master threshold priority Threshold priority level (a value of 0 to 7, with 0 (default) being the highest priority level). References with a selection priority value lower than this value are treated as phase masters (see the Profile Registers (Register 0600 to Register 07FF) section for the selection priority value). PROFILE REGISTERS (REGISTER 0600 TO REGISTER 07FF) Note that the default value of every bit is 0 for Profile 0 to Profile 7. Register 0600 to Register 0631—Profile 0 Table 78. Priorities—Profile 0 Address Bits Bit Name Description 0600 [7:6] Unused [5:3] Promoted priority User-assigned priority level (0 to 7) of the reference associated with Profile 0 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 0, which ranks that reference relative to the others. Table 79. Reference Period—Profile 0 Address Bits Bit Name Description 0601 [7:0] Reference period (in femtoseconds) Nominal reference period, Bits[7:0] 0602 [7:0] Nominal reference period, Bits[15:8] 0603 [7:0] Nominal reference period, Bits[23:16] 0604 [7:0] Nominal reference period, Bits[31:24] 0605 [7:0] Nominal reference period, Bits[39:32] 0606 [7:0] Nominal reference period, Bits[47:40] 0607 [7:2] Unused [1:0] Reference period Nominal reference period, Bits[49:48] Table 80. Tolerance—Profile 0 Address Bits Bit Name Description 0608 [7:0] Inner tolerance Inner tolerance, Bits[7:0] 0609 [7:0] Inner tolerance, Bits[15:8] 060A [7:4] Unused [3:0] Inner tolerance Inner tolerance, Bits[19:16] 060B [7:0] Outer tolerance Outer tolerance, Bits[7:0] 060C [7:0] Outer tolerance, Bits[5:8] 060D [7:4] Unused [3:0] Outer tolerance Outer tolerance, Bits[19:16] Table 81. Validation Timer—Profile 0 Address Bits Bit Name Description 060E [7:0] Validation timer (in milliseconds) Validation timer, Bits[7:0] 060F [7:0] Validation timer, Bits[15:8] Table 82. Redetect Timer—Profile 0 Address Bits Bit Name Description 0610 [7:0] Redetect timer (in milliseconds) Redetect timer, Bits[7:0] 0611 [7:0] Redetect timer, Bits[15:8] |
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