PLL是数字锁相环设计源程序, 其中, Fi是输入频率(接收数据), Fo(Q5)是本地输出频率. 目的是从输入数据中提取时钟信号(Q5), 其频率与数据速率一致, 时钟上升沿锁定在数据的上升和下降沿上；顶层文件是PLL.GDF-Pll。
文件列表:
pll
...\aa.gdf
...\edge.acf
...\edge.cnf
...\edge.fit
...\edge.gdf
...\edge.hex
...\edge.hif
...\edge.mmf
...\edge.ndb
...\edge.pin
...\edge.pof
...\edge.rpt
...\edge.scf
...\edge.snf
...\edge.sof
...\edge.ttf
...\inst1.gdf
...\mealy1.acf
...\mealy1.cnf
...\mealy1.fit
...\mealy1.gdf
...\mealy1.hex
...\mealy1.hif
...\mealy1.mmf
...\mealy1.ndb
...\mealy1.pin
...\mealy1.pof
...\mealy1.rpt
...\mealy1.scf
...\mealy1.snf
...\mealy1.sof
...\mealy1.ttf
...\pll(1).cnf
...\pll(2).cnf
...\pll(3).cnf
...\pll(4).cnf
...\pll(5).cnf
...\pll.acf
...\pll.cnf
...\pll.fit
...\pll.gdf
...\pll.hif
...\pll.jam
...\pll.jbc
...\pll.mmf
...\pll.ndb
...\pll.pin
...\pll.pof
...\pll.rpt
...\pll.scf
...\pll.snf
...\pll1(1).cnf
...\pll1(2).cnf
...\pll1(3).cnf
...\pll1(4).cnf
...\pll1.acf
...\pll1.cnf
...\pll1.fit
...\pll1.gdf
...\pll1.hif
...\pll1.jam
...\pll1.jbc
...\pll1.mmf
...\pll1.ndb
...\pll1.pin
...\pll1.pof
...\pll1.rpt
...\pll1.snf
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