Datasheet
AD9122
Rev. B | Page 21 of 60
DEVICE CONFIGURATION REGISTER MAP AND DESCRIPTIONS
Table 10. Device Configuration Register Map
Addr
(Hex) Register Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Default
0x00 Comm SDIO LSB_FIRST Reset 0x00
0x01 Power control
Power
down
I DAC
Power
down
Q DAC
Power
down data
receiver
Power
down
aux ADC
0x10
0x03 Data format
Binary
data
format
Q data
first
MSB swap Data Bus Width[1:0] 0x00
0x04 Interrupt enable
Enable
PLL lock
lost
Enable
PLL
locked
Enable
sync
signal lost
Enable
sync
signal
locked
Enable
FIFO
Warning 1
Enable
FIFO
Warning 2
0x00
0x05 Interrupt enable 0 0 0
Enable
AED
compare
pass
Enable
AED
compare
fail
Enable
SED
compare
fail
0 0 0x00
0x06 Event flag
PLL lock
lost
PLL
locked
Sync
signal
lost
Sync
signal
locked
FIFO
Warning 1
FIFO
Warning 2
N/A
0x07 Event flag
AED
compare
pass
AED
compare
fail
SED
compare
fail
N/A
0x08
Clock receiver
control
DACCLK
duty
correction
REFCLK
duty
correction
DACCLK
cross-
correction
REFCLK
cross-
correction
1 1 1 1 0x3F
0x0A PLL control
PLL
enable
PLL
manual
enable
Manual VCO Band[5:0] 0x40
0x0C PLL control
PLL Loop
Bandwidth[1:0]
PLL Charge Pump Current[4:0] 0xD1
0x0D PLL control N2[1:0]
PLL cross-
control
enable
N0[1:0] N1[1:0] 0xD9
0x0E PLL status PLL locked VCO Control Voltage[3:0] N/A
0x0F PLL status VCO Band Readback[5:0] N/A
0x10 Sync control
Sync
enable
Data/FIFO
rate toggle
Rising
edge sync
Sync Averaging[2:0] 0x48
0x11 Sync control Sync Phase Request[5:0] 0x00
0x12 Sync status Sync lost
Sync
locked
N/A
0x13 Sync status Sync Phase Readback[7:0] (6.2 format) N/A
0x15
Data receiver
status
LVDS
FRAME
level high
LVDS
FRAME
level low
LVDS DCI
level high
LVDS DCI
level low
LVDS data
level high
LVDS data
level low
N/A
0x16 DCI delay DCI Delay[1:0] 0x00
0x17 FIFO control FIFO Phase Offset[2:0] 0x04
0x18 FIFO status
FIFO
Warning 1
FIFO
Warning 2
FIFO soft
align ack
FIFO soft
align
request
N/A
0x19 FIFO status FIFO Level[7:0] N/A
0x1B
Datapath
control
Bypass
premod
Bypass
sinc
−1
Bypass
NCO
NCO gain
Bypass
phase
comp and
dc offset
Select
sideband
Send
I data to
Q data
0xE4