基于xilinx spartan 3e 开发板的正弦波信号发生，通过fpga查找ROM正弦信号表,将数字信号通过spi接口写入开发板上的12位DA芯片ITC2614。通过DA转换产生正弦波。ROM深度为32768，表示一个正弦周期最多可以有32768个点。可以通过修改相位累积值和ROM表来设定输出正弦波的频率。程序本人编写和上板实测。ltc2614_spi_cosx32768\111.vcd.....................\blk_mem_gen_v6_1.mif.....................\button_pulse.cmd_log.....................\button_pulse.v.....................\chipscope.cpj.....................\clkdiv.v.....................\clkdiv1.v.....................\clkdiv_arwz.ucf.....................\da2614.ipf.....................\fff.cdc.....................\fuse.log.....................\fuse.xmsgs.....................\fuseRelaunch.cmd.....................\impact.xsl.....................\impact_impact.xwbt.....................\.pcore_dir\blk_mem_gen_ds512.pdf.....................\..........\blk_mem_gen_readme.txt.....................\..........\clkdiv.v.....................\..........\clkdiv.vhd.....................\..........\clkdiv.xaw.....................\..........\clkdiv_arwz.ucf.....................\..........\clkdiv_flist.txt.....................\..........\coregen.cgc.....................\..........\coregen.cgp.....................\..........\coregen.log.....................\..........\create_clkdiv.tcl.....................\..........\create_sinxrom.tcl.....................\..........\edit_sinxrom.tcl.....................\..........\iseconfig\sinxrom.projectmgr.....................\..........\.........\sinxrom.xreport.....................\..........\sinxrom.asy.....................\..........\sinxrom.gise.....................\..........\sinxrom.mif.....................\..........\sinxrom.ncf.....................\..........\sinxrom.ngc.....................\..........\sinxrom.sym.....................\..........\sinxrom.v.....................\..........\sinxrom.veo.....................\..........\sinxrom.vhd.....................\..........\sinxrom.vho.....................\..........\sinxrom.xco.....................\..........\sinxrom.xise.....................\..........\sinxrom_flist.txt.....................\..........\sinxrom_xmdf.tcl.....................\..........\tmp\_xmsgs\ngcbuild.xmsgs.....................\..........\...\......\pn_parser.xmsgs.....................\..........\...\......\xst.xmsgs.....................\..........\xaw2verilog.log.....................\..........\xaw2vhdl.log.....................\..........\_xmsgs\cg.xmsgs.....................\..........\......\pn_parser.xmsgs.....................\.seconfig\spi.projectmgr.....................\.........\spi.xreport.....................\.........\top.xreport.....................\..im\isim_usage_statistics.html.....................\....\pn_info.....................\....\tb_top_isim_beh.exe.sim\isimcrash.log.....................\....\.......................\ISimEngine-DesignHierarchy.dbg.....................\....\.......................\isimkernel.log.....................\....\.......................\netId.dat.....................\....\.......................\tb_top_isim_beh.exe.....................\....\.......................\.mp_save\_1.....................\....\.......................\unisims_ver\m_00000000000740258969_1625843133.c.....................\....\.......................\...........\m_00000000000740258969_1625843133.didat.....................\....\.......................\...........\m_00000000000740258969_1625843133.nt.obj.....................\....\.......................\...........\m_00000000000740258969_3897995058.c.....................\....\.......................\...........\m_00000000000740258969_3897995058.didat.....................\....\.......................\...........\m_00000000000740258969_3897995058.nt.obj.....................\....\.......................\...........\m_00000000001946988858_2297623829.c.....................\....\.......................\...........\m_00000000001946988858_2297623829.didat.....................\....\.......................\...........\m_00000000001946988858_2297623829.nt.obj.....................\....\.......................\...........\m_00000000002399568039_2282143210.c.....................\....\.......................\...........\m_00000000002399568039_2282143210.didat.....................\....\.......................\...........\m_00000000002399568039_2282143210.nt.obj.....................\....\.......................\...........\m_00000000002922998384_1660000384.c.....................\....\.......................\...........\m_00000000002922998384_1660000384.didat.....................\....\.......................\...........\m_00000000002922998384_1660000384.nt.obj.....................\....\.......................\...........\m_00000000003131622635_0225263307.c.....................\....\.......................\...........\m_00000000003131622635_0225263307.didat.....................\....\.......................\...........\m_00000000003131622635_0225263307.nt.obj.....................\....\.......................\...........\m_00000000003266096158_2593380106.c.....................\....\.......................\...........\m_00000000003266096158_2593380106.didat.....................\....\.......................\...........\m_00000000003266096158_2593380106.nt.obj.....................\....\.......................\work\m_00000000000106792924_0903130938.c.....................\....\.......................\....\m_00000000000106792924_0903130938.didat.....................\....\.......................\....\m_00000000000106792924_0903130938.nt.obj.....................\....\.......................\....\m_00000000000843948690_3622719947.c.....................\....\.......................\....\m_00000000000843948690_3622719947.didat.....................\....\.......................\....\m_00000000000843948690_3622719947.nt.obj.....................\....\.......................\....\m_00000000000852076517_3823007873.c.....................\....\.......................\....\m_00000000000852076517_3823007873.didat.....................\....\.......................\....\m_00000000000852076517_3823007873.nt.obj.....................\....\.......................\....\m_00000000002247391122_2217340468.c.....................\....\.......................\....\m_00000000002247391122_2217340468.didat.....................\....\.......................\....\m_00000000002247391122_2217340468.nt.obj.....................\....\.......................\....\m_00000000002489990758_0960904518.c.....................\....\.......................\....\m_00000000002489990758_0960904518.didat.....................\....\.......................\....\m_00000000002489990758_0960904518.nt.obj.....................\....\.......................\....\m_00000000002704699562_3823007873.c.....................\....\.......................\....\m_00000000002704699562_3823007873.didat……