Datasheet

AD9773
Rev. D | Page 18 of 60
MODE CONTROL (VIA SPI PORT)
Table 9. Mode Control via SPI Port
1
Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
00h
SDIO
Bidirectional
0 = Input
1 = I/O
LSB, MSB First
0 = MSB
1 = LSB
Software
Reset
on Logic 1
Sleep
Mode
Logic 1
Shuts
Down the
DAC
Output
Currents
Power-Down
Mode Logic 1
Shuts Down
All Digital and
Analog
Functions
1R/2R Mode
DAC Output
Current Set by
One or Two
External
Resistors
0 = 2R, 1 = 1R
PLL_LOCK
Indicator
01h
Filter
Interpolation
Rate
(1×, 2×, 4×, 8×)
Filter
Interpolation
Rate
(1×, 2×, 4×, 8×)
Modulation
Mode
(None, f
S
/2,
f
S
/4, f
S
/8)
Modulation
Mode
(None, f
S
/2,
f
S
/4, f
S
/8)
0 = No Zero
Stuffing on
Interpolation
Filters, Logic 1
Enables Zero
Stuffing
1 = Real Mix
Mode
0 = Complex
Mix Mode
0 = e
–jωt
1 = e
+jωt
DATACLK/
PLL_LOCK
2
Select
0 =
PLLLOCK
1 =
DATACLK
02h
0 = Signed
Input Data
1 = Unsigned
0 = Two-Port
Mode
1 = One-Port
Mode
DATACLK
Driver
Strength
DATACLK
Invert
0 = No
Invert
1 = Invert
ONEPORTCLK
Invert
0 = No Invert
1 = Invert
IQSEL
Invert
0 = No
Invert
1 = Invert
Q First
0 = I First
1 = Q First
03h
Data Rate
2
Output Clock
PLL Divide
(Prescaler)
Ratio
PLL Divide
(Prescaler)
Ratio
04h
0 = PLL OFF
2
1 = PLL ON
0 = Automatic
Charge Pump
Control
1 =
Programmable
PLL Charge
Pump
Control
PLL Charge
Pump
Control
PLL Charge
Pump
Control
05h
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
IDAC
Fine Gain
Adjustment
06h
IDAC
Coarse Gain
Adjustment
IDAC
Coarse Gain
Adjustment
IDAC
Coarse
Gain
Adjustment
IDAC
Coarse
Gain
Adjustment
07h
IDAC Offset
Adjustment
Bit 9
IDAC Offset
Adjustment
Bit 8
IDAC Offset
Adjustment
Bit 7
IDAC Offset
Adjustment
Bit 6
IDAC Offset
Adjustment
Bit 5
IDAC Offset
Adjustment
Bit 4
IDAC Offset
Adjustment
Bit 3
IDAC Offset
Adjustment
Bit 2
08h
IDAC I
OFFSET
Direction
0 = I
OFFSET
on I
OUTA
1 = I
OFFSET
on I
OUTB
IDAC Offset
Adjustment
Bit 1
IDAC Offset
Adjustment
Bit 0
09h
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment
QDAC
Fine Gain
Adjustment