Sundance SMT399-160 - Manual (Page 27)

1 Frequency Tuning Word 1[15:8]
Default ‘00000000’
DDS0 Register – 0xE – Frequency Tuning Word 1
Setting Frequency
Tuning
Word 1 Description
The frequency tuning word is a 32-bit register that controls the rate of accumulation in the phase
accumulator of the DDS core.
5.4.16 DDS0 Register – 0xF – Frequency Tuning Word 1.
For more details, refer to AD9954 datasheet.
DDS0 Register – 0xF – Frequency Tuning Word 1
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Frequency Tuning Word 1[23:16]
Default ‘00000000’
1 Frequency Tuning Word 1[31:24]
Default ‘00000000’
DDS0 Register – 0xF – Frequency Tuning Word 1
Setting Frequency
Tuning
Word 1 Description
The frequency tuning word is a 32-bit register that controls the rate of accumulation in the phase
accumulator of the DDS core.
5.4.17 DDS0 Register – 0x10 – RAM Segment Control Word
0.
For more details, refer to AD9954 datasheet.
DDS0 Register – 0x10 – RAM Segment Control Word 0
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 RAM Segment 0 Mode Control No Dwell
Active
RAM Segment 0 Beginning Address[9:6]
Default ‘000’ ‘0’ ‘0000’
1 RAM Segment 0 Beginning Address[5:0] RAM Segment 0 Final
Address[9:8]
Default ‘000000’ ‘00’
5.4.18 DDS0 Register – 0x11 – RAM Segment Control Word
0.
For more details, refer to AD9954 datasheet.
DDS0 Register – 0x11 – RAM Segment Control Word 0
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 RAM Segment 0 Final Address[7:0]
Default ‘00000000’
User Manual SMT399-160 Page 27 of 39 Last Edited: 24/05/2007 17:12:00