Datasheet

Data Sheet AD9547
Rev. E | Page 63 of 104
Addr
Opt
1
Name
D7
D6
D5
D4
D3
D2
D1
D0
Def
0x0650
R divider
R[23:0]
0x00
0x0651
0x00
0x0652 0x00
0x0653
Unused
R[29:24]
0x00
0x0654
S divider
S[15:0]
0x00
0x0655
0x00
0x0656
Unused
S[19:16]
0x00
0x0657
Unused
0x00
0x0658
Fractional
feedback
divider
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[15:0] (in units of ps)
0x00
0x065C
0x00
0x065D
Phase lock fill rate[7:0]
0x00
0x065E
Phase lock drain rate[7:0]
0x00
0x065F Frequency lock threshold[23:0] (in ps) 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
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[39:0] (in units of fs up to 1.1 ms)
0x00
0x0682 0x00
0x0683
0x00
0x0684
0x00
0x0685 0x00
0x0686
Unused (write 0s to these bits)
0x00
0x0687
0x00
0x0688
Tolerance
Inner tolerance[15:0] (1/tolerance) (removes fault status; 10% down to 1 ppm)
0x00
0x0689
0x00
0x068A
Unused
Inner tolerance[19:16]
0x00
0x068B
Outer tolerance[15:0] (1/tolerance) (indicates fault status; 10% down to 1 ppm)
0x00
0x068C
0x00
0x068D
Unused
Outer tolerance [19:16]
0x00
0x068E
Validation
timer
Validation timer[15:0] (ms) (up to 65,535 ms)
0x00
0x068F
0x00
0x0690
Redetect
timer
Redetect timer[15:0] (ms) (up to 65,535 ms)
0x00
0x0691
0x00
0x0692
Digital loop
filter coeffi-
cients
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 ex-
ponent[0]
Delta-0 linear[14:8]
0x00
0x069D
Alpha-3 exponent[3:0]
Delta-1 exponent[4:1]
0x00