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AD9548 Datasheet(PDF) 83 Page - Analog Devices |
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AD9548 Datasheet(HTML) 83 Page - Analog Devices |
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83 / 111 page  Data Sheet AD9548 Table 78. Phase Build-Out Switching Address Bits Bit Name Description 0x0507 [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 0X0600 to Register 0X07FF) section for the selection priority value). PROFILE REGISTERS (REGISTER 0x0600 TO REGISTER 0x07FF) Note that the default value of every bit is 0 for Profile 0 to Profile 7. Register 0x0600 to Register 0x0631—Profile 0 Table 79. Priorities—Profile 0 Address Bits Bit Name Description 0x0600 [7] Phase lock scale Controls the phase lock threshold unit scaling. 0 = picoseconds. 1 = nanoseconds. [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 80. Reference Period—Profile 0 Address Bits Bit Name Description 0x0601 [7:0] Reference period (in femtoseconds) Nominal reference period, Bits[7:0] 0x0602 [7:0] Nominal reference period, Bits[15:8] 0x0603 [7:0] Nominal reference period, Bits[23:16] 0x0604 [7:0] Nominal reference period, Bits[31:24] 0x0605 [7:0] Nominal reference period, Bits[39:32] 0x0606 [7:0] Nominal reference period, Bits[47:40] 0x0607 [7:2] Unused [1:0] Reference period Nominal reference period, Bits[49:48] Table 81. Tolerance—Profile 0 Address Bits Bit Name Description 0x0608 [7:0] Inner tolerance Inner tolerance, Bits[7:0] 0x0609 [7:0] Inner tolerance, Bits[15:8] 0x060A [7:4] Unused [3:0] Inner tolerance Inner tolerance, Bits[19:16] 0x060B [7:0] Outer tolerance Outer tolerance, Bits[7:0] 0x060C [7:0] Outer tolerance, Bits[5:8] 0x060D [7:4] Unused [3:0] Outer tolerance Outer tolerance, Bits[19:16] Table 82. Validation Timer—Profile 0 Address Bits Bit Name Description 0x060E [7:0] Validation timer (in milliseconds) Validation timer, Bits[7:0] 0x060F [7:0] Validation timer, Bits[15:8] Table 83. Redetect Timer—Profile 0 Address Bits Bit Name Description 0x0610 [7:0] Redetect timer (in milliseconds) Redetect timer, Bits[7:0] 0x0611 [7:0] Redetect timer, Bits[15:8] Rev. G | Page 83 of 111 |
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