Datasheet

Data Sheet AD9547
Rev. E | Page 81 of 104
Table 87. Fractional Feedback Divider—Profile 0
Address
Bit
Bit Name
Description
0x0626 [7:0] V V, Bits[7:0].
0x0627
[7:4]
U
U, Bits[3:0].
[3:2] Unused Unused.
[1:0]
V
V, Bits[9:8].
0x0628
[7:6]
Unused
Unused.
[5:0] U U, Bits[9:4].
Table 88. Lock Detectors—Profile 0
Address
Bit
Bit Name
Description
0x0629 [7:0] Phase lock threshold (units determined by Register 0x0600[7]) Phase lock threshold, Bits[7:0].
0x062A
[7:0]
Phase lock threshold, Bits[15:8].
0x062B
[7:0]
Phase lock fill rate
Phase lock fill rate, Bits[7:0].
0x062C
[7:0]
Phase lock drain rate
Phase lock drain rate, Bits[7:0].
0x062D [7:0] Frequency lock threshold (expressed in units of ps) Frequency lock threshold, Bits[7:0].
0x062E
[7:0]
Frequency lock threshold, Bits[15:8].
0x062F
[7:0]
Frequency lock threshold, Bits[23:16].
0x0630 [7:0] Frequency lock fill rate Frequency lock fill rate, Bits[7:0].
0x0631
[7:0]
Frequency lock drain rate
Frequency lock drain rate, Bits[7:0].
Register 0x0632 to Register 0x067F—Profile 1
Table 89. Priorities—Profile 1
Address
Bit
Bit Name
Description
0x0632 [7] Phase lock scale Controls the phase lock threshold unit scaling.
0 = picoseconds.
1 = nanoseconds.
[6]
Unused
Unused.
[5:3] Promoted priority User assigned priority level (0 to 7) of the reference associated with Profile 1 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 1, which
ranks that reference relative to the others.
Table 90. Reference Period—Profile 1
Address
Bit
Bit Name
Description
0x0633 [7:0] Reference period (expressed in units of fs) Nominal reference period, Bits[7:0].
0x0634
[7:0]
Nominal reference period, Bits[15:8].
0x0635 [7:0] Nominal reference period, Bits[23:16].
0x0636
[7:0]
Nominal reference period, Bits[31:24].
0x0637 [7:0] Nominal reference period, Bits[39:32].
0x0638
[7:0]
Unused
Unused. Write 0s to these bits.
0x0639
[7:0]
Table 91. Tolerance—Profile 1
Address
Bit
Bit Name
Description
0x063A
[7:0]
Inner tolerance
Inner tolerance, Bits[7:0].
0x063B
[7:0]
Inner tolerance, Bits[15:8].
0x063C [7:4] Unused Unused.
[3:0]
Inner tolerance
Inner tolerance, Bits[19:16].
0x063D [7:0] Outer tolerance Outer tolerance, Bits[7:0].
0x063E
[7:0]
Outer tolerance, Bits[15:8].