Datasheet

AD9714/AD9715/AD9716/AD9717
Rev. A | Page 38 of 80
Register Address Bit Name Description
AUXDAC I 0x0B 7:0 IAUXDAC[7:0] AUXDAC I output voltage adjustment word LSBs.
0x3FF: sets AUXDAC I output to full scale.
0x200: sets AUXDAC I output to midscale.
0x000 (default): sets AUXDAC I output to bottom of scale.
AUX CTLI 0x0C 7 IAUXEN 0 (default): AUXDAC I output disabled.
1: enables AUXDAC I output.
6:5 IAUXRNG[1:0] 00 (default): sets AUXDAC I output voltage range to 2 V.
01: sets AUXDAC I output voltage range to 1.5 V.
10: sets AUXDAC I output voltage range to 1.0 V.
11: sets AUXDAC I output voltage range to 0.5 V.
4:2 IAUXOFS[2:0] 000 (default): sets AUXDAC I top of range to 1.0 V.
001: sets AUXDAC I top of range to 1.5 V.
010: sets AUXDAC I top of range to 2.0 V.
011: sets AUXDAC I top of range to 2.5 V.
100: sets AUXDAC I top of range to 2.9 V.
1:0 IAUXDAC[9:8] AUXDAC I output voltage adjustment word MSBs (default = 00).
Reference
Resistor
0x0D 5:0 RREF[5:0]
Permits an adjustment of the on-chip reference voltage and output at REFIO (see
Figure 98) twos complement.
000000 (default): sets the value of R
REF
to 10 kΩ, V
REF
= 1.0 V.
011111: sets the value of R
REF
to 12 kΩ, V
REF
= 1.2 V.
100000: sets the value of R
REF
to 8 kΩ, V
REF
= 0.8 V.
111111: sets the value of R
REF
to 10 kΩ, V
REF
= 1.0 V.
Cal Control 0x0E 7 PRELDQ 0 (default): preload Q DAC calibration reference set to 32.
1: preload Q DAC calibration reference set by user (Cal Address 1).
6 PRELDI 0 (default): preload I DAC calibration reference set to 32.
1: preload I DAC calibration reference set by user (Cal Address 1).
5 CALSELQ 0 (default): Q DAC self-calibration done.
1: select Q DAC self-calibration.
4 CALSELI 0 (default): I DAC self-calibration done.
1: select I DAC self-calibration.
3 CALCLK 0 (default): calibration clock disabled.
1: calibration clock enabled.
2:0 DIVSEL[2:0] Calibration clock divide ratio from DAC clock rate.
000 (default): divide by 256.
001: divide by 128.
…
110: divide by 4.
111: divide by 2.
Cal Memory 0x0F 7 CALSTATQ 0 (default): Q DAC calibration in progress.
1: calibration of Q DAC complete.
6 CALSTATI 0 (default): I DAC calibration in progress.
1: calibration of I DAC complete.
3:2 CALMEMQ[1:0] Status of Q DAC calibration memory.
00 (default): uncalibrated.
01: self-calibrated.
10: user calibrated.
1:0 CALMEMI[1:0] Status of I DAC calibration memory.
00 (default): uncalibrated.
01: self-calibrated.
10: user calibrated.
Memory Address 0x10 5:0 MEMADDR[5:0] Address of static memory to be accessed.
Memory Data 0x11 5:0 MEMDATA[5:0] Data for static memory access.