dianzhen.tan.summary

实现一个10秒倒计时电路

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Timing Analyzer Summary
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Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : 0.433 ns
From           : countbutton
To             : q1[3]~reg0
From Clock     : 
To Clock       : clk
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 9.450 ns
From           : q[7]~reg0
To             : q[7]
From Clock     : clk
To Clock       : 
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : 2.562 ns
From           : countbutton
To             : q1[1]~reg0
From Clock     : 
To Clock       : clk
Failed Paths   : 0

Type           : Worst-case Minimum tco
Slack          : N/A
Required Time  : None
Actual Time    : 4.448 ns
From           : clk1~reg0
To             : clk1
From Clock     : clk
To Clock       : 
Failed Paths   : 0

Type           : Clock Setup: 'clk'
Slack          : N/A
Required Time  : None
Actual Time    : 141.96 MHz ( period = 7.044 ns )
From           : qtemp4[4]
To             : qtemp4[0]
From Clock     : clk
To Clock       : clk
Failed Paths   : 0

Type           : Clock Hold: 'clk'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : press[3]~reg0
To             : q1[2]~reg0
From Clock     : clk
To Clock       : clk
Failed Paths   : 7

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 7

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