recuart.tan.summary

利用VHDL实现CPLD（EPM240T100C5）的串口接收程序

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Timing Analyzer Summary
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Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : -5.205 ns
From           : rxd
To             : rxd1
From Clock     : --
To Clock       : clk50
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 20.531 ns
From           : rbr[2]
To             : dout[2]
From Clock     : clk50
To Clock       : --
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : 5.759 ns
From           : rxd
To             : rxd1
From Clock     : --
To Clock       : clk50
Failed Paths   : 0

Type           : Clock Setup: 'clk50'
Slack          : N/A
Required Time  : None
Actual Time    : 131.61 MHz ( period = 7.598 ns )
From           : no_bits_rcvd[0]
To             : clk1x_enable
From Clock     : clk50
To Clock       : clk50
Failed Paths   : 0

Type           : Clock Hold: 'clk50'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : rxd2
To             : framing_error~reg0
From Clock     : clk50
To Clock       : clk50
Failed Paths   : 2

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 2

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