Datasheet

AD9786
Rev. B | Page 22 of 56
MODE CONTROL (VIA SERIAL PORT)
Table 11.
Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
COMMS 00 SDIODIR DATADIR SWRST SLEEP PDN EXREF
FILTER 01 INTERP[1] INTERP[0] ZSTUFF HPFX8 HPFX4 HPFX2
DATA 02 DATAFMT ONEPORT DCLKSTR DCLKPOL DCLKEXT DCLKCRC IQPOL CRAYDIN
MODULATE 03 CHANNEL HILBERT MODDUAL SIDEBAND MOD[1] MOD[0]
RESERVED 04 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
DCLKCRC 05 DATAADJ[3] DATAADJ[2] DATAADJ[1] DATAADJ[0] MODSYNC MODADJ[2] MODADJ[1] MODADJ[0]
06 Reserved
07 Reserved
08 Reserved
09 Reserved
0A Reserved
0B Reserved
0C Reserved
0D Reserved
CALMEMCK 0E CALMEM[1] CALMEN[0] CALCKDIV[2] CALCKDIV[2] CALCKDIV[2]
MEMRDWR 0F CALSTAT CALEN XFERSTAT XFEREN SMEMWR SMEMRD FMEMRD UNCAL
MEMADDR 10 MEMADDR[7] MEMADDR[6] MEMADDR[5] MEMADDR[4] MEMADDR[3] MEMADDR[2] MEMADDR[1] MEMADDR[0]
MEMDATA 11 MEMDATA[5] MEMDATA[4] MEMDATA[3] MEMDATA[2] MEMDATA[1] MEMDATA[0]
DCRCSTAT 12 DCRCSTAT[2] DCRCSTAT[1] DCRCSTAT[0]
Table 12.
COMMS(00) Bit Direction Default Description
SDIODIR 7 I 0 0: SDIO pin configured for input only during data transfer
1: SDIO configured for input or output during data transfer
DATADIR 6 I 0 0: Serial data uses MSB-first format
1: Serial data uses LSB-first format
SWRST 5 I 0 1: Default all serial register bits, except Address 0x00 and Address 0x04
SLEEP 4 I 0 1: DAC output current off
PDN 3 I 0 1: All analog and digital circuitry, except serial interface, off
EXREF 0 I 0 0: Internal band gap reference
1: External reference
Table 13.
FILTER(01) Bit Direction Default Description
INTERP[1:0] [7:6] I 00 00: No interpolation
01: Interpolation 2×
10: Interpolation 4×
11: Interpolation 8×
ZSTUFF 3 I 0 1: Zero stuffing on
HPFX8 2 I 0 0: ×8 interpolation filter configured for low-pass
1: ×8 interpolation filter configured for high-pass
HPFX4 1 I 0 0: ×4 interpolation filter configured for low-pass
1: ×4 interpolation filter configured for high-pass
HPFX2 0 I 0 0: ×2 interpolation filter configured for low-pass
1: ×2 interpolation filter configured for high-pass