Datasheet

Data Sheet AD9957
Rev. C | Page 53 of 64
Table 16. Profile 4, Profile 5, and Profile 6 Registers
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
Profile 4
Register—
Single Tone
(0x12)
<63:56> Open Amplitude Scale Factor<13:8> 0x00
<55:48>
Amplitude Scale Factor<7:0>
0x00
<47:40> Phase Offset Word<15:8> 0x00
<39:32> Phase Offset Word<7:0> 0x00
<31:24>
Frequency Tuning Word<31:24>
0x00
<23:16> Frequency Tuning Word<23:16> 0x00
<15:8> Frequency Tuning Word<15:8> 0x00
<7:0> Frequency Tuning Word<7:0> 0x00
Profile 4
Register—
QDUC
(0x12)
<63:56> CCI Interpolation Rate<7:2> Spectral Invert Inverse CCI Bypass 0x00
<55:48> Output Scale Factor<7:0> 0x00
<47:40> Phase Offset Word<15:8> 0x00
<39:32> Phase Offset Word<7:0> 0x00
<31:24> Frequency Tuning Word<31:24> 0x00
<23:16> Frequency Tuning Word<23:16> 0x00
<15:8> Frequency Tuning Word<15:8> 0x00
<7:0> Frequency Tuning Word<7:0> 0x00
Profile 5
Register—
Single Tone
(0x13)
<63:56> Open Amplitude Scale Factor<13:8> 0x00
<55:48> Amplitude Scale Factor<7:0> 0x00
<47:40> Phase Offset Word<15:8> 0x00
<39:32> Phase Offset Word<7:0> 0x00
<31:24> Frequency Tuning Word<31:24> 0x00
<23:16> Frequency Tuning Word<23:16> 0x00
<15:8> Frequency Tuning Word<15:8> 0x00
<7:0>
Frequency Tuning Word<7:0>
0x00
Profile 5
Register—
QDUC
(0x13)
<63:56> CCI Interpolation Rate<7:2> Spectral Invert Inverse CCI Bypass 0x00
<55:48> Output Scale Factor<7:0> 0x00
<47:40>
Phase Offset Word<15:8>
0x00
<39:32> Phase Offset Word<7:0> 0x00
<31:24> Frequency Tuning Word<31:24> 0x00
<23:16>
Frequency Tuning Word<23:16>
0x00
<15:8> Frequency Tuning Word<15:8> 0x00
<7:0> Frequency Tuning Word<7:0> 0x00
Profile 6
Register—
Single Tone
(0x14)
<63:56> Open Amplitude Scale Factor<13:8> 0x00
<55:48> Amplitude Scale Factor<7:0> 0x00
<47:40> Phase Offset Word<15:8> 0x00
<39:32> Phase Offset Word<7:0> 0x00
<31:24> Frequency Tuning Word<31:24> 0x00
<23:16> Frequency Tuning Word<23:16> 0x00
<15:8> Frequency Tuning Word<15:8> 0x00
<7:0> Frequency Tuning Word<7:0> 0x00
Profile 6
Register—
QDUC
(0x14)
<63:56> CCI Interpolation Rate<7:2> Spectral Invert Inverse CCI Bypass 0x00
<55:48> Output Scale Factor<7:0> 0x00
<47:40> Phase Offset Word<15:8> 0x00
<39:32> Phase Offset Word<7:0> 0x00
<31:24> Frequency Tuning Word<31:24> 0x00
<23:16> Frequency Tuning Word<23:16> 0x00
<15:8> Frequency Tuning Word<15:8> 0x00
<7:0> Frequency Tuning Word<7:0> 0x00