Datasheet

AD9511
Rev. A | Page 48 of 60
Reg.
Addr.
(Hex)
Bit(s) Name Description
08 <5:2> PLL Mux Control
<5> <4> <3> <2> MUXOUT—Signal on STATUS Pin
0 0 0 0 Off (Signal Goes Low) (Default)
0 0 0 1 Digital Lock Detect (Active High)
0 0 1 0 N Divider Output
0 0 1 1 Digital Lock Detect (Active Low)
0 1 0 0 R Divider Output
0 1 0 1 Analog Lock Detect (N Channel, Open-Drain)
0 1 1 0 A Counter Output
0 1 1 1 Prescaler Output (NCLK)
1 0 0 0 PFD Up Pulse
1 0 0 1 PFD Down Pulse
1 0 1 0 Loss-of-Reference (Active High)
1 0 1 1 Tri-State
1 1 0 0 Analog Lock Detect (P Channel, Open-Drain)
1 1 0 1
Loss-of-Reference or Loss-of-Lock (Inverse of DLD)
(Active High)
1 1 1 0
Loss-of-Reference or Loss-of-Lock (Inverse of DLD)
(Active Low)
1 1 1 1 Loss-of-Reference (Active Low)
MUXOUT is the PLL portion of the STATUS output MUX.
08 <6>
Phase-Frequency
Detector (PFD)
Polarity
0 = Negative (Default), 1 = Positive.
08 <7> Not Used.
09 <0> Reset All Counters 0 = Normal (Default), 1 = Reset R, A, and B Counters.
09 <1> N-Counter Reset 0 = Normal (Default), 1 = Reset A and B Counters.
09 <2> R-Counter Reset 0 = Normal (Default), 1 = Reset R Counter.
09 <3> Not Used.
09 <6:4>
Charge Pump (CP)
Current Setting
<6> <5> <4> I
CP
(mA)
0 0 0 0.60
0 0 1 1.2
0 1 0 1.8
0 1 1 2.4
1 0 0 3.0
1 0 1 3.6
1 1 0 4.2
1 1 1 4.8
Default = 000b.
These currents assume: CPR
SET
= 5.1 kΩ.
Actual current can be calculated by: CP_lsb = 3.06/CPR
SET
.
09 <7> Not Used.