Frequency selection system. the inclk0 side input 25MHz signal, multiplier by altpll at 400MHz signal C0-ended output, demand not the same as their own to change the parameters of frequency multiplier. The divider clkdiv used divided by two, divide-eighth of the frequency, and 16 divided by, respectively, are at a frequency of 200MHz, 100MHz, 50MHz, 25MHz four kinds of frequency signals input to the selector. Select the TCLK is an external input signal, A [3 .. 0] four separate buttons, selector all the way to the output with a different combination of buttons to choose from the four sub-frequency preferences and TCLK. Code is clear and easy to understand, does not meet the needs of your own expansion

fpxz\altpll0.bsf
....\altpll0.cmp
....\altpll0.ppf
....\altpll0.qip
....\altpll0.vhd
....\altpll0_wave0.jpg
....\altpll0_waveforms.html
....\clkdiv.bsf
....\clkdiv.vhd
....\db\fpxz.asm.qmsg
....\..\fpxz.asm_labs.ddb
....\..\fpxz.cbx.xml
....\..\fpxz.cmp.bpm
....\..\fpxz.cmp.cdb
....\..\fpxz.cmp.ecobp
....\..\fpxz.cmp.hdb
....\..\fpxz.cmp.kpt
....\..\fpxz.cmp.logdb
....\..\fpxz.cmp.rdb
....\..\fpxz.cmp.tdb
....\..\fpxz.cmp0.ddb
....\..\fpxz.cmp2.ddb
....\..\fpxz.cmp_merge.kpt
....\..\fpxz.db_info
....\..\fpxz.eco.cdb
....\..\fpxz.fit.qmsg
....\..\fpxz.hier_info
....\..\fpxz.hif
....\..\fpxz.map.bpm
....\..\fpxz.map.cdb
....\..\fpxz.map.ecobp
....\..\fpxz.map.hdb
....\..\fpxz.map.kpt
....\..\fpxz.map.logdb
....\..\fpxz.map.qmsg
....\..\fpxz.map_bb.cdb
....\..\fpxz.map_bb.hdb
....\..\fpxz.map_bb.hdbx
....\..\fpxz.map_bb.logdb
....\..\fpxz.pre_map.cdb
....\..\fpxz.pre_map.hdb
....\..\fpxz.psp
....\..\fpxz.rtlv.hdb
....\..\fpxz.rtlv_sg.cdb
....\..\fpxz.rtlv_sg_swap.cdb
....\..\fpxz.sgdiff.cdb
....\..\fpxz.sgdiff.hdb
....\..\fpxz.sld_design_entry.sci
....\..\fpxz.sld_design_entry_dsc.sci
....\..\fpxz.syn_hier_info
....\..\fpxz.tan.qmsg
....\..\fpxz.tis_db_list.ddb
....\..\prev_cmp_fpxz.qmsg
....\fpxz.asm.rpt
....\fpxz.bdf
....\fpxz.done
....\fpxz.fit.rpt
....\fpxz.fit.smsg
....\fpxz.fit.summary
....\fpxz.flow.rpt
....\fpxz.map.rpt
....\fpxz.map.summary
....\fpxz.pin
....\fpxz.pof
....\fpxz.qpf
....\fpxz.qsf
....\fpxz.sof
....\fpxz.tan.rpt
....\fpxz.tan.summary
....\incremental_db\compiled_partitions\fpxz.root_partition.cmp.atm
....\..............\...................\fpxz.root_partition.cmp.dfp
....\..............\...................\fpxz.root_partition.cmp.hdbx
....\..............\...................\fpxz.root_partition.cmp.kpt
....\..............\...................\fpxz.root_partition.cmp.logdb
....\..............\...................\fpxz.root_partition.cmp.rcf
....\..............\...................\fpxz.root_partition.map.atm
....\..............\...................\fpxz.root_partition.map.dpi
....\..............\...................\fpxz.root_partition.map.hdbx
....\..............\...................\fpxz.root_partition.map.kpt
....\..............\...................\fpxz.root_partition.merge_hb.atm
....\..............\README
....\xzq.bsf
....\xzq.vhd
....\incremental_db\compiled_partitions
....\db
....\incremental_db
fpxz

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