jinruan
Junior Member level 3
what's the reason?
i have run DC for synthesis
the following are the violations, what's the reason and what to do?
max_transition
Required Actual
Net Transition Transition Slack
-----------------------------------------------------------------
mcu_rclk_pd (dont_touch) 4.50 79.55 -75.05 (VIOLATED)
mcu_wclk_pd (dont_touch) 4.50 79.55 -75.05 (VIOLATED)
rx_bit_pd 4.50 79.20 -74.70 (VIOLATED)
rx_clk_pd 4.50 79.20 -74.70 (VIOLATED)
test_pd 4.50 79.20 -74.70 (VIOLATED)
tx_begin_pd 4.50 79.20 -74.70 (VIOLATED)
tx_end_pd 4.50 79.20 -74.70 (VIOLATED)
tx_type_pd 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[0] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[1] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[2] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[3] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[4] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[5] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[6] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[7] 4.50 79.20 -74.70 (VIOLATED)
max_capacitance
Required Actual
Net Capacitance Capacitance Slack
-----------------------------------------------------------------
mcu_rclk_pd (dont_touch) 0.31 5.53 -5.22 (VIOLATED)
mcu_wclk_pd (dont_touch) 0.31 5.53 -5.22 (VIOLATED)
rx_bit_pd 0.31 5.51 -5.19 (VIOLATED)
rx_clk_pd 0.31 5.51 -5.19 (VIOLATED)
test_pd 0.31 5.51 -5.19 (VIOLATED)
tx_begin_pd 0.31 5.51 -5.19 (VIOLATED)
tx_end_pd 0.31 5.51 -5.19 (VIOLATED)
tx_type_pd 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[0] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[1] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[2] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[3] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[4] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[5] 0.31 5.51 -5.19 (VIOLATED)
i have run DC for synthesis
the following are the violations, what's the reason and what to do?
max_transition
Required Actual
Net Transition Transition Slack
-----------------------------------------------------------------
mcu_rclk_pd (dont_touch) 4.50 79.55 -75.05 (VIOLATED)
mcu_wclk_pd (dont_touch) 4.50 79.55 -75.05 (VIOLATED)
rx_bit_pd 4.50 79.20 -74.70 (VIOLATED)
rx_clk_pd 4.50 79.20 -74.70 (VIOLATED)
test_pd 4.50 79.20 -74.70 (VIOLATED)
tx_begin_pd 4.50 79.20 -74.70 (VIOLATED)
tx_end_pd 4.50 79.20 -74.70 (VIOLATED)
tx_type_pd 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[0] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[1] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[2] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[3] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[4] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[5] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[6] 4.50 79.20 -74.70 (VIOLATED)
wdata_pd[7] 4.50 79.20 -74.70 (VIOLATED)
max_capacitance
Required Actual
Net Capacitance Capacitance Slack
-----------------------------------------------------------------
mcu_rclk_pd (dont_touch) 0.31 5.53 -5.22 (VIOLATED)
mcu_wclk_pd (dont_touch) 0.31 5.53 -5.22 (VIOLATED)
rx_bit_pd 0.31 5.51 -5.19 (VIOLATED)
rx_clk_pd 0.31 5.51 -5.19 (VIOLATED)
test_pd 0.31 5.51 -5.19 (VIOLATED)
tx_begin_pd 0.31 5.51 -5.19 (VIOLATED)
tx_end_pd 0.31 5.51 -5.19 (VIOLATED)
tx_type_pd 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[0] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[1] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[2] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[3] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[4] 0.31 5.51 -5.19 (VIOLATED)
wdata_pd[5] 0.31 5.51 -5.19 (VIOLATED)