Datasheet

AD9548 Data Sheet
Rev. E | Page 66 of 112
Addr
Opt
Name
D7
D6
D5
D4
D3
D2
D1
D0
Def
0x06C4 Digital loop
filter
coefficients
Alpha-0 linear [15:0] 0x00
0x06C5 0x00
0x06C6 Alpha-2 exponent [1:0] Alpha-1 exponent [5:0] 0x00
0x06C7 Beta-0 linear [6:0] Alpha-2
exponent [2]
0x00
0x06C8 Beta-0 linear [14:7] 0x00
0x06C9 Unused Beta-1 exponent [4:0] Beta-0
linear
[16:15]
00
0x06CA Gamma-0 linear [15:0] 0x00
0x06CB 0x00
0x06CC Unused Gamma-1 exponent [4:0] Gamma-0
linear [16]
0x00
0x06CD Delta-0 linear [7:0] 0x00
0x06CE Delta-1
exponent
[0]
Delta-0 linear [14:8] 0x00
0x06CF Alpha-3 exponent [3:0] Delta-1 exponent [4:1] 0x00
0x06D0 Frequency
multiplica-
tion
R [23:0] 0x00
0x06D1 0x00
0x06D2 0x00
0x06D3 Unused R [29:24] 0x00
0x06D4 S [23:0] 0x00
0x06D5 0x00
0x06D6 0x00
0x06D7 Unused S [29:24] 0x00
0x06D8
V [7:0]
0x00
0x06D9 U [3:0] Unused V [9:8] 0x00
0x06DA
Unused
U [9:4]
0x00
0x06DB
Lock
detectors
Phase lock threshold (picoseconds) [15:0]
0x00
0x06DC
0x00
0x06DD
Phase lock fill rate [7:0]
0x00
0x06DE Phase lock drain rate [7:0] 0x00
0x06DF
Frequency lock threshold (picoseconds) [23:0]
0x00
0x06E0 0x00
0x06E1 0x00
0x06E2 Frequency lock fill rate [7:0] 0x00
0x06E3 Frequency lock drain rate [7:0] 0x00
0x06E4-
0x06FF
Unused
Profile Registers—Profile 4 Through Profile 7
0x0700-
0x07FF
Profile 4
through
Profile 7
The functionality of the Profile 4 through Profile 7 address locations (Address 0x to Address 0x07FF) is identical to that
of the Profile 0 through Profile 3 address locations (Address 0x0600 to Address 0x06FF).
Operational Controls
0x0A00 S General
power-down
Reset Sans
regmap
Unused SYSCLK
power-
down
Reference
power-
down
TDC
power-
down
DAC
power-
down
Dist
power-
down
Full
power-
down
0x00
0x0A01 C Loop
mode
Unused User
holdover
User
freerun
User selection mode [1:0] User reference selection [2:0] 0x00
0x0A02 S Cal/sync Unused Sync
distribu-
tion
Calibrate
system
clock
0x00
0x0A03 A, C ResetFunc Unused Clear LF Clear CCI Clear phase
accumulator
Reset auto
sync
Reset
TW history
Reset
all IRQs
Reset
watchdog
0x00
0x0A04 A, C IRQ clearing Unused SYSCLK
unlocked
SYSCLK
locked
Unused Unused SYSCLK Cal
complete
SYSCLK Cal
started
0x00
0x0A05 A, C Unused Distribu-
tion sync
Watchdog
timer
EEPROM
fault
EEPROM
complete
0x00
0x0A06 A, C Switching Closed Freerun Holdover Freq
unlocked
Freq
locked
Phase
unlocked
Phase
locked
0x00
0x0A07 A, C Unused History
updated
Freq un-
clamped
Freq
clamped
Phase slew
unlimited
Phase slew
limited
0x00
0x0A08
A, C
Ref AA
Ref AA
Ref AA
Ref AA
Ref A
Ref A
Ref A
Ref A
0x00