freqm
所属分类：VHDL/FPGA/Verilog
开发工具：VHDL
文件大小：1029KB
下载次数：227
上传日期：2009-02-14 22:21:06
上 传 者：
erabbit
说明： 以CPLD器件EPM7128SLC84-15为核心实现的简易数字频率计，采用在一定时间内对数字脉冲计数的方法，可直接测量TTL电平的数字脉冲信号的频率、周期和脉宽。其他一些信号可经过信号预处理电路变换后测量。
量程：1Hz～999999Hz
输入信号：（1）TTL电平数字脉冲信号；（2）方波/正弦波，幅度0.5~5V
显示：七段数码管显示频率（Hz）和周期/脉宽（us）
控制：两个拨码开关切换三种工作模式：测频率，测周期，测脉宽
(Frequency Counter realized with Altera EPM7128SLC84-15. It can measure frequecy, cycle and pulse width of TTL sigals.)
文件列表:
freqm\dispselector\dispselector.qpf (1566, 2008-01-01)
freqm\dispselector\dispselector.qsf (2545, 2008-01-01)
freqm\dispselector\db\dispselector.asm.qmsg (1122, 2008-01-01)
freqm\dispselector\db\dispselector.tan.qmsg (29410, 2008-01-01)
freqm\dispselector\db\dispselector.db_info (133, 2007-12-03)
freqm\dispselector\db\dispselector.sld_design_entry_dsc.sci (134, 2008-01-01)
freqm\dispselector\db\dispselector.fit.qmsg (1252, 2008-01-01)
freqm\dispselector\db\dispselector.cmp.hdb (9708, 2008-01-01)
freqm\dispselector\db\dispselector.pre_map.hdb (9160, 2008-01-01)
freqm\dispselector\db\dispselector.sgdiff.cdb (2728, 2008-01-01)
freqm\dispselector\db\dispselector.sim.qmsg (3939, 2008-01-01)
freqm\dispselector\db\dispselector.map.qmsg (2461, 2008-01-01)
freqm\dispselector\db\dispselector.project.hdb (8164, 2008-01-01)
freqm\dispselector\db\dispselector.sgdiff.hdb (10532, 2008-01-01)
freqm\dispselector\db\dispselector.map.cdb (3067, 2008-01-01)
freqm\dispselector\db\dispselector_cmp.qrpt (0, 2007-12-03)
freqm\dispselector\db\dispselector.(0).cnf.cdb (3420, 2008-01-01)
freqm\dispselector\db\dispselector.rtlv_sg.cdb (2594, 2008-01-01)
freqm\dispselector\db\dispselector.rtlv.hdb (9149, 2008-01-01)
freqm\dispselector\db\dispselector.(0).cnf.hdb (814, 2008-01-01)
freqm\dispselector\db\dispselector.sim.hdb (4454, 2008-01-01)
freqm\dispselector\db\dispselector.rtlv_sg_swap.cdb (158, 2008-01-01)
freqm\dispselector\db\dispselector.map.hdb (9246, 2008-01-01)
freqm\dispselector\db\dispselector.cmp.tdb (5144, 2008-01-01)
freqm\dispselector\db\dispselector.cmp.rdb (9907, 2008-01-01)
freqm\dispselector\db\dispselector.cmp.ddb (1182, 2008-01-01)
freqm\dispselector\db\dispselector.cmp.cdb (6245, 2008-01-01)
freqm\dispselector\db\dispselector_sim.qrpt (0, 2007-12-03)
freqm\dispselector\db\dispselector.sim.vwf (19294, 2008-01-01)
freqm\dispselector\db\dispselector.sim.rdb (1619, 2008-01-01)
freqm\dispselector\db\dispselector.sld_design_entry.sci (134, 2008-01-01)
freqm\dispselector\db\dispselector.hif (454, 2008-01-01)
freqm\dispselector\db\dispselector.hier_info (2057, 2008-01-01)
freqm\dispselector\db\dispselector.syn_hier_info (0, 2008-01-01)
freqm\dispselector\db (0, 2007-12-03)
freqm\dispselector\dispselector.map.rpt (9649, 2008-01-01)
freqm\dispselector\dispselector.flow.rpt (3965, 2008-01-01)
freqm\dispselector\dispselector.map.summary (297, 2008-01-01)
freqm\dispselector\dispselector.map.eqn (8318, 2008-01-01)
freqm\dispselector\dispselector.fit.eqn (8830, 2008-01-01)
... ...
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