sm.tan.summary

可预置数字钟

--------------------------------------------------------------------------------------
Timing Analyzer Summary
--------------------------------------------------------------------------------------

Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : 12.600 ns
From           : FEN[1]
To             : CQ[1]$latch
From Clock     : --
To Clock       : CLK2
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 21.600 ns
From           : CQ[3]$latch
To             : CQ[3]
From Clock     : CLK2
To Clock       : --
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : 2.300 ns
From           : SHI[4]
To             : CQ[0]$latch
From Clock     : --
To Clock       : CLK2
Failed Paths   : 0

Type           : Clock Setup: 'CLK2'
Slack          : N/A
Required Time  : None
Actual Time    : 111.11 MHz ( period = 9.000 ns )
From           : BT[1]
To             : CQ[1]$latch
From Clock     : CLK2
To Clock       : CLK2
Failed Paths   : 0

Type           : Clock Hold: 'CLK2'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : BT[0]
To             : Y[0]$latch
From Clock     : CLK2
To Clock       : CLK2
Failed Paths   : 12

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 12

--------------------------------------------------------------------------------------