Datasheet

Data Sheet AD9548
Rev. E | Page 65 of 112
Addr
Opt
Name
D7
D6
D5
D4
D3
D2
D1
D0
Def
0x0692 Digital loop
filter
coefficients
Alpha-0 linear [15:0] 0x00
0x0693 0x00
0x0694 Alpha-2 exponent [1:0] Alpha-1 exponent [5:0] 0x00
0x0695 Beta-0 linear [6:0] Alpha-2
exponent
[2]
0x00
0x0696 Beta-0 linear [14:7] 0x00
0x0697 Unused Beta-1 exponent [4:0] Beta-0 linear [16:15] 0x00
0x0698 Gamma-0 linear [15:0] 0x00
0x0699 0x00
0x069A Unused Gamma-1 exponent [4:0] Gamma-0
linear [16]
0x00
0x069B Delta-0 linear [7:0] 0x00
0x069C Delta-1
exponent
[0]
Delta-0 linear [14:8] 0x00
0x069D Alpha-3 exponent [3:0] Delta-1 exponent [4:1] 0x00
0x069E Frequency
multiplica-
tion
R [23:0] 0x00
0x069F 0x00
0x06A0 0x00
0x06A1 Unused R [29:24] 0x00
0x06A2 S [23:0] 0x00
0x06A3 0x00
0x06A4 0x00
0x06A5 Unused S [29:24] 0x00
0x06A6 V [7:0] 0x00
0x06A7 U [3:0] Unused V [9:8] 0x00
0x06A8 Unused U [9:4] 0x00
0x06A9
Lock
detectors
Phase lock threshold (picoseconds) [15:0]
0x00
0x06AA 0x00
0x06AB Phase lock fill rate [7:0] 0x00
0x06AC Phase lock drain rate [7:0] 0x00
0x6AD Frequency lock threshold (picoseconds) [23:0] 0x00
0x06AE 0x00
0x06AF 0x00
0x06B0 Frequency lock fill rate [7:0] 0x00
0x06B1 Frequency lock drain rate [7:0] 0x00
Profile Registers—Profile 3
0x06B2 Priorities Phase lock
scale
Unused Promoted priority [2:0] Selection priority [2:0] 0x00
0x06B3 Reference
period
Nominal period (femtoseconds) [47:0] (up to 1.125 sec) 0x00
0x06B4 0x00
0x06B5 0x00
0x06B6 0x00
0x06B7 0x00
0x06B8 0x00
0x06B9 Unused Nominal period [49:48] 0x00
0x06BA Tolerance Inner tolerance (1/tolerance) [15:0] (removes fault status; 10% down to 1 ppm) 0x00
0x06BB 0x00
0x06BC Unused Inner tolerance [19:16] 0x00
0x06BD Outer tolerance (1/tolerance) [15:0] (indicates fault status; 10% down to 1 ppm) 0x00
0x06BE 0x00
0x06BF Unused Outer tolerance [19:16] 0x00
0x06C0 Validation Validation timer (milliseconds) [15:0] (up to 65.5 sec) 0x00
0x06C1 0x00
0x06C2 Redetect
timeout
Redetect timer (milliseconds) [15:0] (up to 65.5 sec) 0x00
0x06C3 0x00