初次接触DC，时序报告，违例

W13675308408 · 发表于 2014-10-17 12:11:39

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Information: Propagating switching activity (low effort zero delay simulation). (PWR-6)
Warning: Design has unannotated primary inputs. (PWR-414)
Warning: Design has unannotated sequential cell outputs. (PWR-415)
****************************************
Report : constraint
      -all_violators
Design : aes_ASIC
Version: C-2009.06-SP5
Date : Wed Oct 15 23:21:06 2014
****************************************

min_delay/hold ('wb_clk' group)

                           Required       Actual
Endpoint                Path Delay    Path Delay       Slack
-----------------------------------------------------------------
PAD_wb_ack_o                2.10          1.43 f       -0.67  (VIOLATED)
PAD_wb_dat_o[0]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[1]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[2]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[3]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[4]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[5]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[6]             2.10          1.44 f       -0.66  (VIOLATED)
PAD_wb_dat_o[7]             2.10          1.44 f       -0.66  (VIOLATED)
这是其中一部分，大神们帮忙看看，1.43f  啥意思？另外哪里有时序报告教程？