The use of ip core

简单介绍一下FPGA中锁相环的IP使用，因为我们在编程的过程，会用到很多时钟，简单分享一下，PLL IP的使用

pll_test
_xmsgs
_ngo
xst
xlnx_auto_0_xdb
iseconfig
ipcore_dir
freq.v
fuse.xmsgs
fuseRelaunch.cmd
isim.cmd
led.v
led_isim_beh.exe
led_isim_beh1.wdb
par_usage_statistics.html
pll_test.gise
pll_test.ucf
pll_test.xise
tb_pll.v
tb_pll_isim_beh.exe
tb_pll_isim_beh.wdb
top.bgn
top.bit
top.bld
top.cmd_log
top.drc
top.lso
top.ncd
top.ngc
top.ngd
top.ngr
top.pad
top.par
top.pcf
top.prj
top.ptwx
top.stx
top.syr
top.twr
top.twx
top.unroutes
top.ut
top.v
top.xpi
top.xst
top_beh.prj
top_bitgen.xwbt
top_envsettings.html
top_guide.ncd
top_map.map
top_map.mrp
top_map.ncd
top_map.ngm
top_map.xrpt
top_ngdbuild.xrpt
top_pad.csv
top_pad.txt
top_par.xrpt
top_summary.html
top_summary.xml
top_usage.xml
top_xst.xrpt
usage_statistics_webtalk.html
webtalk.log
webtalk_pn.xml
xilinxsim.ini