Datasheet

AD9548 Data Sheet
Rev. E | Page 64 of 112
Addr
Opt
Name
D7
D6
D5
D4
D3
D2
D1
D0
Def
0x0644 Digital loop
filter
coefficients
Alpha-0 linear [15:0] 0x00
0x0645 0x00
0x0646 Alpha-2 exponent [1:0] Alpha-1 exponent [5:0] 0x00
0x0647 Beta-0 linear [6:0] Alpha-2
exponent
[2]
0x00
0x0648 Beta-0 linear [14:7] 0x00
0x0649 Unused Beta-1 exponent [4:0] Beta-0 linear [16:15] 0x00
0x064A Gamma-0 linear [15:0] 0x00
0x064B 0x00
0x064C Unused Gamma-1 exponent [4:0] Gamma-0
linear [16]
0x00
0x064D Delta-0 linear [7:0] 0x00
0x064E Delta-1
exponent [0]
Delta-0 linear [14:8] 0x00
0x064F Alpha-3 exponent [3:0] Delta-1 exponent [4:1] 0x00
0x0650 Frequency
multiplica-
tion
R [23:0] 0x00
0x0651 0x00
0x0652 0x00
0x0653 Unused R [29:24] 0x00
0x0654 S [23:0] 0x00
0x0655 0x00
0x0656 0x00
0x0657 Unused S [29:24] 0x00
0x0658 V [7:0] 0x00
0x0659
U [3:0]
Unused
V [9:8]
0x00
0x065A Unused U [9:4] 0x00
0x065B
Lock
detectors
Phase lock threshold (picoseconds) [15:0]
0x00
0x065C
0x00
0x065D Phase lock fill rate [7:0] 0x00
0x065E
Phase lock drain rate [7:0]
0x00
0x065F Frequency lock threshold (picoseconds) [23:0] 0x00
0x0660
0x00
0x0661 0x00
0x0662 Frequency lock fill rate [7:0] 0x00
0x0663 Frequency lock drain rate [7:0] 0x00
0x0664
to
0x067F
Unused
Profile Registers—Profile 2
0x0680 Priorities Phase lock
scale
Unused Promoted priority [2:0] Selection priority [2:0] 0x00
0x0681 Reference
period
Nominal period (femtoseconds) [47:0] (up to 1.125 sec) 0x00
0x0682 0x00
0x0683 0x00
0x0684 0x00
0x0685 0x00
0x0686 0x00
0x0687 Unused Nominal period [49:48] 0x00
0x0688 Tolerance Inner tolerance (1/tolerance) [15:0] (removes fault status; 10% down to 1 ppm) 0x00
0x0689 0x00
0x068A Unused Inner tolerance [19:16] 0x00
0x068B Outer tolerance (1/tolerance) [15:0] (indicates fault status; 10% down to 1 ppm) 0x00
0x068C
0x00
0x068D Unused Outer tolerance [19:16] 0x00
0x068E
Validation
Validation timer (milliseconds) [15:0] (up to 65.5 sec)
0x00
0x068F
0x00
0x0690
Redetect
timeout
Redetect timer (milliseconds) [15:0] (up to 65.5 seconds)
0x00
0x0691
0x00