stopwatch.tan.summary

利用Quarteus II 6.0 设计一个秒表

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Timing Analyzer Summary
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Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : 9.686 ns
From           : stop
To             : count5[2]
From Clock     : --
To Clock       : clk
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 24.830 ns
From           : sg[5]$latch
To             : sg[5]
From Clock     : clk_led
To Clock       : --
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : -6.207 ns
From           : start
To             : count2[0]
From Clock     : --
To Clock       : clk
Failed Paths   : 0

Type           : Clock Setup: 'clk'
Slack          : N/A
Required Time  : None
Actual Time    : 178.51 MHz ( period = 5.602 ns )
From           : count1[3]
To             : count2[0]
From Clock     : clk
To Clock       : clk
Failed Paths   : 0

Type           : Clock Setup: 'clk_led'
Slack          : N/A
Required Time  : None
Actual Time    : Restricted to 275.03 MHz ( period = 3.636 ns )
From           : cnt8[1]
To             : cnt8[1]
From Clock     : clk_led
To Clock       : clk_led
Failed Paths   : 0

Type           : Clock Hold: 'clk_led'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : cnt8[0]
To             : sg[0]$latch
From Clock     : clk_led
To Clock       : clk_led
Failed Paths   : 21

Type           : Clock Hold: 'clk'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : count2[3]
To             : sg[5]$latch
From Clock     : clk
To Clock       : clk
Failed Paths   : 150

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 171

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