Datasheet

AD9547 Data Sheet
Rev. E | Page 60 of 104
Addr Opt
1
Name D7 D6 D5 D4 D3 D2 D1 D0 Def
DPLL
0x0300
C
Free-running
frequency
tuning word
Free-running frequency tuning word[47:0]
0x00
0x0301
C
0x00
0x0302 C 0x00
0x0303
C
0x00
0x0304
C
0x00
0x0305 C 0x00
0x0306
A, C
Update TW
Unused
Update TW
0x00
0x0307 C Pull-in range
lower limit
Pull-in range lower limit[23:0] 0x00
0x0308 C 0x00
0x0309
C
0x00
0x030A
C
Pull-in range
upper limit
Pull-in range upper limit[23:0]
0xFF
0x030B C 0xFF
0x030C
C
0xFF
0x030D
C
Open-loop
phase offset
Open-loop phase offset word[15:0]
0x00
0x030E C 0x00
0x030F
C
Fixed closed-
loop phase
lock offset
Fixed phase lock offset[39:0] (in ps; signed)
0x00
0x0310
C
0x00
0x0311 C 0x00
0x0312
C
0x00
0x0313
C
0x00
0x0314
C
Incremental
closed-loop
phase lock
offset step size
Incremental phase lock offset step size[15:0] (in ps/step)
0xE8
0x0315
C
0x03
0x0316 C Phase slew
rate limit
Phase slew rate limit[15:0] (in ns/sec) 0x00
0x0317
C
0x00
0x0318
C
History
accumulation
timer
History accumulation timer[23:0] (in ms)
0x30
0x0319 C 0x75
0x031A
C
0x00
0x031B C History mode Unused Single
sample
fallback
Persistent
history
Incremental average[2:0] 0x00
Clock distribution output configuration
0x0400
S
Distribution
settings
Unused
External
distribution
resistor
Receiver
mode
Unused
OUT1
power-
down
OUT0
power-
down
0x0C
0x0401
S
Distribution
enable
Unused
OUT1
enable
OUT0
enable
0x00
0x0402
S
Distribution
synchronizatio
n
Unused
Sync source[1:0]
Unused
OUT1
sync mask
OUT0
sync mask
0x00
0x0403
C
Automatic
synchronizatio
n
Unused
Automatic sync mode[1:0]
0x00
0x0404
S
Distribution
channel
modes
Unused
OUT0
CMOS
phase invert
OUT0
polarity
invert
OUT0
drive
strength
OUT0 mode
0x03
0x0405 S Unused OUT1
CMOS
phase invert
OUT1
polarity
invert
OUT1
drive
strength
OUT1 mode 0x03
0x0406 S Unused Unused 0x03
0x0407 S 0x03
0x0408
S
Distribution
channel
divider, Q0
Q0[23:0]
0x00
0x0409
S
0x00
0x040A S 0x00
0x040B
S
Unused
Q0[29:24]
0x00
0x040C
S
Distribution
channel
divider, Q1
Q1[23:0]
0x00
0x040D S 0x00
0x040E
S
0x00
0x040F S Unused Q1[29:24] 0x00