Datasheet

AD9558 Data Sheet
Rev. B | Page 70 of 104
Reg
Addr
(Hex)
Opt Name D7 D6 D5 D4 D3 D2 D1 D0 Def
Read-Only Status (Accessible During EEPROM Transactions)
0x0D00 R, L EEPROM Reserved Pin program
ROM load
process
Fault
detected
Load in
progress
Save in
progress
N/A
0x0D01 R, L SYSCLK and
PLL status
Reserved DPLL_
APLL_
Lock
All PLLs
locked
APLL VCO
status
APLL cal
in progress
APLL lock SYSCLK stable SYSCLK
lock detect
N/A
0x0D02 R, L IRQ monitor
events
Reserved SYSCLK
unlocked
SYSCLK
locked
APLL
unlocked
APLL
lock detect
APLL cal ended APLL cal
started
N/A
0x0D03 R, L Reserved Pin
program
end
Output dist
sync
Watchdog
timer
EEPROM
fault
EEPROM
complete
N/A
0x0D04 R, L Switching Closed Freerun Holdover Frequency
unlocked
Frequency
locked
Phase
unlocked
Phase
locked
N/A
0x0D05 R, L Reserved History
updated
Frequency
unclamped
Frequency
clamped
Phase slew
unlimited
Phase slew
limited
N/A
0x0D06 R, L Reserved REFB
validated
REFB fault
cleared
REFB fault Reserved REFA
validated
REFA fault
cleared
REFA fault N/A
0x0D07 R, L Reserved REFD
validated
REFD
fault
cleared
REFD
fault
Reserved REFC
validated
REFC
fault cleared
REFC
fault
N/A
0x0D08
R
DPLL
Reserved
Offset slew
limiting
Frequency
lock
Phase lock
Loop
switching
Holdover
Active
Freerun
N/A
0x0D09 R Reserved Frequency
clamped
History
available
Reserved Active
reference
priority
Current active reference N/A
0x0D0A R Reserved N/A
0x0D0B R REFA/REFB B valid B fault B fast B slow A valid A fault A fast A slow N/A
0x0D0C R REFC/REFD D valid D fault D fast D slow C valid C fault C fast C slow N/A
0x0D0D R Holdover
history
Tuning word readback[31:0] N/A
0x0D0E R N/A
0x0D0F R N/A
0x0D10 R N/A
0x0D11
R
Lock detector
phase tub
Phase tub[7:0]
N/A
0x0D12 R Reserved Phase tub[11:8] N/A
0x0D13 R Lock detector
frequency tub
Frequency tub[7:0] N/A
0x0D14 R Reserved Frequency tub[11:8] N/A
Nonvolatile Memory (EEPROM) Control
0x0E00 E Write protect Reserved Write enable 00
0x0E01 E Condition Reserved Conditional value[3:0] 00
0x0E02 A,E Save Reserved Save to
EEPROM
00
0x0E03 A,E Load Reserved Load from
EEPROM
00