vhdl书写uart代码,经验证功能非常的全.

源代码在线查看: uart.tan.summary

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关键词: vhdl uart 代码 经验
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				--------------------------------------------------------------------------------------
				Timing Analyzer Summary
				--------------------------------------------------------------------------------------
				
				Type           : Worst-case tsu
				Slack          : N/A
				Required Time  : None
				Actual Time    : 4.327 ns
				From           : send
				To             : uart_core:U_Core|si_count[3]
				From Clock     : --
				To Clock       : clk
				Failed Paths   : 0
				
				Type           : Worst-case tco
				Slack          : N/A
				Required Time  : None
				Actual Time    : 13.946 ns
				From           : shift_register:U_SR|dout
				To             : TxD
				From Clock     : clk
				To Clock       : --
				Failed Paths   : 0
				
				Type           : Worst-case th
				Slack          : N/A
				Required Time  : None
				Actual Time    : 5.829 ns
				From           : reset_n
				To             : shift_register:U_SR|shift_regs[0]
				From Clock     : --
				To Clock       : clk
				Failed Paths   : 0
				
				Type           : Clock Setup: 'clk'
				Slack          : N/A
				Required Time  : None
				Actual Time    : 80.61 MHz ( period = 12.405 ns )
				From           : counter:U_Counter|overflow
				To             : uart_core:U_Core|si_count[3]
				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           : uart_core:U_Core|ce_parts
				To             : counter:U_Counter|count[11]
				From Clock     : clk
				To Clock       : clk
				Failed Paths   : 47
				
				Type           : Total number of failed paths
				Slack          : 
				Required Time  : 
				Actual Time    : 
				From           : 
				To             : 
				From Clock     : 
				To Clock       : 
				Failed Paths   : 47
				
				--------------------------------------------------------------------------------------
				
							

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