Datasheet

AD9547 Data Sheet
Rev. E | Page 62 of 104
Addr Opt
1
Name D7 D6 D5 D4 D3 D2 D1 D0 Def
0x061E R divider R[23:0] 0x00
0x061F
0x00
0x0620
0x00
0x0621 Unused R[29:24] 0x00
0x0622
S divider
S[15:0]
0x00
0x0623
0x00
0x0624 Unused S[19:16] 0x00
0x0625
Unused
0x00
0x0626 Fractional
feedback
divider
V[7:0] 0x00
0x0627 U[3:0] Unused V[9:8] 0x00
0x0628
Unused
U[9:4]
0x00
0x0629
Lock
detectors
Phase lock threshold[15:0] (in ps)
0x00
0x062A 0x00
0x062B
Phase lock fill rate[7:0]
0x00
0x062C
Phase lock drain rate[7:0]
0x00
0x062D Frequency lock threshold[23:0] (in ps) 0x00
0x062E
0x00
0x062F
0x00
0x0630 Frequency lock fill rate[7:0] 0x00
0x0631
Frequency lock drain rate[7:0]
0x00
Profile registers—Profile 1
0x0632
Priorities
Phase lock
scale
Unused
Promoted priority[2:0]
Selection priority[2:0]
0x00
0x0633 Reference
period
Nominal reference period[39:0] (in units of fs up to 1.1 ms) 0x00
0x0634 0x00
0x0635
0x00
0x0636
0x00
0x0637 0x00
0x0638
Unused (write 0s to these bits)
0x00
0x0639
0x00
0x063A Tolerance Inner tolerance[15:0] (1/tolerance) (removes fault status; 10% down to 1 ppm) 0x00
0x063B
0x00
0x063C Unused Inner tolerance[19:16] 0x00
0x06CD Outer tolerance[15:0] (1/tolerance) (indicates fault status; 10% down to 1 ppm) 0x00
0x063E
0x00
0x063F
Unused
Outer tolerance[19:16]
0x00
0x0640 Validation
timer
Validation timer[15:0] (in units of ms up to 65.5 sec) 0x00
0x0641
0x00
0x0642
Redetect
timer
Redetect timer[15:0] (in units of ms up to 65.5 sec)
0x00
0x0643 0x00
0x0644
Digital loop
filter coeffi-
cients
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
De lta-1 ex-
ponent[0]
Delta-0 linear[14:8]
0x00
0x064F Alpha-3 exponent[3:0] Delta-1 exponent[4:1] 0x00