DDS的频率转换可以以近似认为是即时的，这是因为它的相位序列在时间上是离散的，在频率控制字改变之后，要经过一个时钟周期之后才能按照新的相位增量增加，所以也可以说...

DDS的频率转换可以以近似认为是即时的，这是因为它的相位序列在时间上是离散的，在频率控制字改变之后，要经过一个时钟周期之后才能按照新的相位增量增加，所以也可以说它的频率转换时间就是频率控制字的传输时间，-DDS frequency conversion can be considered similar to real-time, this is because it is the phase sequence in time is discrete, in the frequency control word change after one clock cycle to go through before a new phase in accordance with the incremental increase, so it can be said of the frequency switching time is the frequency control word transmission time,

DDS
slprj
DSPBuilder_dds_top
DSPBuilder_dds
dds_accel_rtw
db
DDS.vhd
dds_DspBuilder_Report.html
dds_top.asm.rpt
dds_top.bsf
dds_top.done
dds_top.fit.rpt
dds_top.fit.smsg
dds_top.fit.summary
dds_top.flow.rpt
dds_top.map.rpt
dds_top.map.summary
dds_top.mdl
dds_top.merge.rpt
dds_top.pin
dds_top.pof
dds_top.qpf
dds_top.qsf
dds_top.sim.rpt
dds_top.sof
dds_top.tan.rpt
dds_top.tan.summary
dds_top.vec
dds_top.vhd
dds_top.vwf
dds_top_DspBuilder_Report.html
dds_top_quartus.tcl
tb_dds_top.tcl
tb_dds_top.v
tb_dds_top.vhd
dds_top_assignment_defaults.qdf
dds_top.qws