alarm_clock.tan.summary

电子闹钟：基于fpga的电子闹钟设计

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Timing Analyzer Summary
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Type           : Worst-case tsu
Slack          : N/A
Required Time  : None
Actual Time    : 6.449 ns
From           : key_down
To             : alarm_reg:u5|alarm_time[3][0]
From Clock     : --
To Clock       : clk
Failed Paths   : 0

Type           : Worst-case tco
Slack          : N/A
Required Time  : None
Actual Time    : 17.556 ns
From           : alarm_counter:u4|i_current_time[0][2]~512
To             : display[0][1]
From Clock     : clk
To Clock       : --
Failed Paths   : 0

Type           : Worst-case tpd
Slack          : N/A
Required Time  : None
Actual Time    : 17.272 ns
From           : reset
To             : sound_alarm
From Clock     : --
To Clock       : --
Failed Paths   : 0

Type           : Worst-case th
Slack          : N/A
Required Time  : None
Actual Time    : 0.848 ns
From           : keypad[6]
To             : key_buffer:u2|n_t[0][3]
From Clock     : --
To Clock       : key_down
Failed Paths   : 0

Type           : Clock Setup: 'clk'
Slack          : N/A
Required Time  : None
Actual Time    : 82.03 MHz ( period = 12.190 ns )
From           : alarm_counter:u4|i_current_time[0][2]~512
To             : alarm_counter:u4|i_current_time[2][3]~$emulated
From Clock     : clk
To Clock       : clk
Failed Paths   : 0

Type           : Clock Setup: 'key_down'
Slack          : N/A
Required Time  : None
Actual Time    : Restricted to 450.05 MHz ( period = 2.222 ns )
From           : key_buffer:u2|n_t[0][3]
To             : key_buffer:u2|n_t[1][3]
From Clock     : key_down
To Clock       : key_down
Failed Paths   : 0

Type           : Clock Hold: 'key_down'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : key_buffer:u2|n_t[0][2]
To             : alarm_counter:u4|i_current_time[0][2]~512
From Clock     : key_down
To Clock       : key_down
Failed Paths   : 16

Type           : Clock Hold: 'clk'
Slack          : Not operational: Clock Skew > Data Delay
Required Time  : None
Actual Time    : N/A
From           : alarm_controller:u3|curr_state.s3
To             : alarm_counter:u4|i_current_time[2][2]~$emulated
From Clock     : clk
To Clock       : clk
Failed Paths   : 4

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 20

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