Sundance SMT399-160 - Manual (Page 21)

Sine output
(Bit 12)
0 0 Cosine Function.
1 1 Sine Function.
DDS0 Register – 0x6 – Control Function Register
Setting Clear Freq
Accum
(Bit 11)
Description
0 0 The frequency accumulator functions as normal.
1 1 The frequency accumulator is cleared until this bit is cleared.
DDS0 Register – 0x6 – Control Function Register
Setting Clear
Phase
Accum
(Bit 10)
Description
0 0 The phase accumulator functions as normal.
1 1 The phase accumulator is cleared until this bit is cleared.
DDS0 Register – 0x6 – Control Function Register
Setting SDIO
Input only
(Bit 9)
Description
0 0 SDIO is bidirectional.
1 1 SDIO is unidirectional.
DDS0 Register – 0x6 – Control Function Register
Setting LSB first
(Bit 8)
Description
0 0 MSB first format is active.
1 1 LSB first format is active
DDS0 Register – 0x6 – Control Function Register
Setting Digital
Power
Down (Bit
7)
Description
0 0 All Digital functions and clocks are active.
1 1 All non-IO digital functions is suspended.
DDS0 Register – 0x6 – Control Function Register
Setting Comp
Power
Down (Bit
6)
Description
0 0 The comparator is enabled for operation.
1 1 The comparator is disabled.
DDS0 Register – 0x6 – Control Function Register
Setting DAC
Power
Down (Bit
5)
Description
0 0 The DAC is enabled for operation
1 1 The DAC is disabled.
DDS0 Register – 0x6 – Control Function Register
Setting Clk Input
Power
Down (Bit
Description
User Manual SMT399-160 Page 21 of 39 Last Edited: 24/05/2007 17:12:00