Datasheet

Data Sheet AD9910
Rev. D | Page 51 of 64
Register
Name
(Serial
Address)
Bit Range
(Internal
Address)
Bit 7
(MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB)
Default
Value
1
(Hex)
POW—
Phase Offset
Word (0x08)
15:8 Phase offset word[15:8] 0x00
7:0
Phase offset word[7:0]
0x00
ASF—
Amplitude
Scale
Factor
(0x09)
31:24 Amplitude ramp rate[15:8] 0x00
23:16 Amplitude ramp rate[7:0] 0x00
15:8 Amplitude scale factor[13:6] 0x00
7:0 Amplitude scale factor[5:0] Amplitude step size[1:0]
0x00
Multichip
Sync (0x0A)
31:24 Sync validation delay[3:0] Sync
receiver
enable
Sync
generator
enable
Sync
generator
polarity
Open 0x00
23:16 Sync state preset value[5:0] Open 0x00
15:8 Output sync generator delay[4:0] Open 0x00
7:0
Input sync receiver delay[4:0]
Open
0x00
Digital
Ramp Limit
(0x0B)
63:56 Digital ramp upper limit[31:24] N/A
55:48 Digital ramp upper limit[23:16] N/A
47:40 Digital ramp upper limit[15:8] N/A
39:32 Digital ramp upper limit[7:0] N/A
31:24 Digital ramp lower limit[31:24] N/A
23:16
Digital ramp lower limit[23:16]
N/A
15:8 Digital ramp lower limit[15:8] N/A
7:0 Digital ramp lower limit[7:0] N/A
Digital
Ramp Step
Size (0x0C)
63:56 Digital ramp decrement step size[31:24] N/A
55:48 Digital ramp decrement step size[23:16] N/A
47:40 Digital ramp decrement step size[15:8] N/A
39:32 Digital ramp decrement step size[7:0] N/A
31:24 Digital ramp increment step size[31:24] N/A
23:16
Digital ramp increment step size[23:16]
N/A
15:8 Digital ramp increment step size[15:8] N/A
7:0 Digital ramp increment step size[7:0] N/A
Digital
Ramp Rate
(0x0D)
31:24 Digital ramp negative slope rate [15:8] N/A
23:16 Digital ramp negative slope rate[7:0] N/A
15:8 Digital ramp positive slope rate[15:8] N/A
7:0 Digital ramp positive slope rate[7:0] N/A
Single Tone
Profile 0
(0x0E)
63:56 Open Amplitude Scale Factor 0[13:8] 0x08
55:48 Amplitude Scale Factor 0[7:0] 0xB5
47:40
Phase Offset Word 0[15:8]
0x00
39:32 Phase Offset Word 0[7:0] 0x00
31:24 Frequency Tuning Word 0[31:24] 0x00
23:16 Frequency Tuning Word 0[23:16] 0x00
15:8 Frequency Tuning Word 0[15:8] 0x00
7:0 Frequency Tuning Word 0[7:0] 0x00