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求助，Astro做完ECO，report timing 会出现TRI,并且TRANSITION都有100多，但仔细查看了NETLIST确实不可能是三态，贴下REPORT ，请高手帮忙分析下为什么Astro会把这些NET当做TRI呢，谢谢啦。
*********************************************************************************
*
* Start point : u_asic/u_ahb0_U_ahb_U_mux_r_ihmaster_data_reg_2_/CK
* ( Rising edge-triggered flipflop clocked by clk_HCLK )
*
* End point : pad_addr[22]
* ( Output port clocked by clk_HCLK )
*
* Clock Group : clk_HCLK
* Delay Type : Max
* Slack : -805.4191 (VIOLATED)
*
*********************************************************************************
Port/Pin Cap Fanout Trans. Incr Arri Reason Master/Net
---------------------------------------------------------------------------------
Rising edge of clock clk_HCLK 0.0000 0.0000
Clock Source delay 3.1619 3.1619
u_asic/uCLOCKGEN/U3603/Y
0.0330 2 0.1280 3.1619 r u_asic/HCLKASTHIRNet10812 (gclock source)
u_asic/CLKBUFX16G8B10I1/A
0.1280 0.0006 3.1625 r CLKBUFX16
u_asic/CLKBUFX16G8B10I1/Y
0.2036 2 0.1133 0.1626 3.3251 r u_asic/HCLK_G8B10I1ASTHNet10861
u_asic/test_point_24885__cell_12/A
0.1174 0.0326 3.3577 r CLKINVX2
u_asic/test_point_24885__cell_12/Y
0.0369 1 0.2639 0.1889 3.5465 f u_asic/n254557
u_asic/test_point_24885__cell_10/A
0.2641 0.0002 3.5468 f MXI2X8
u_asic/test_point_24885__cell_10/Y
0.0219 2 0.1460 0.1563 3.7031 r u_asic/n254652ASTHIRNet10514
u_asic/CLKBUFX16G10B7I1/A
0.1460 0.0001 3.7032 r CLKBUFX16
u_asic/CLKBUFX16G10B7I1/Y
0.2539 1 0.1225 0.1679 3.8711 r u_asic/n254652_G10B7I1ASTHNet10458
u_asic/CLKBUFX16G10B6I1/A
0.1355 0.0530 3.9241 r CLKBUFX16
u_asic/CLKBUFX16G10B6I1/Y
0.3114 2 0.1589 0.1959 4.1199 r u_asic/n254652_G10B6I1ASTHNet10271
u_asic/CLKBUFX16G10B5I2/A
0.1590 0.0184 4.1383 r CLKBUFX16
u_asic/CLKBUFX16G10B5I2/Y
0.1731 2 0.1020 0.1766 4.3149 r u_asic/n254652_G10B5I2ASTHNet11001
u_asic/CLKBUFX16G10B4I4/A
0.1020 0.0036 4.3186 r CLKBUFX16
u_asic/CLKBUFX16G10B4I4/Y
0.2769 3 0.1440 0.1838 4.5023 r u_asic/n254652_G10B4I4ASTHNet10255
u_asic/CLKBUFX12G10B3I11/A
0.1440 0.0090 4.5113 r CLKBUFX16
u_asic/CLKBUFX12G10B3I11/Y
0.1552 3 0.0978 0.1638 4.6751 r u_asic/n254652_G10B3I11ASTHNet10969
u_asic/CLKBUFX16G10B2I36/A
0.0980 0.0045 4.6796 r CLKBUFX16
u_asic/CLKBUFX16G10B2I36/Y
0.2239 7 0.1226 0.1725 4.8521 r u_asic/n254652_G10B2I36ASTHNet10677
u_asic/CLKBUFX16G10B1I233/A
0.1226 0.0016 4.8537 r CLKBUFX16
u_asic/CLKBUFX16G10B1I233/Y
0.0982 24 0.0727 0.1482 5.0019 r u_asic/n254652_G10B1I233ASTHNet9929
u_asic/u_ahb0_U_ahb_U_mux_r_ihmaster_data_reg_2_/CK
0.0727 0.0005 5.0024 r SDFFRX1
---------------------------------------------------------------------------------
u_asic/u_ahb0_U_ahb_U_mux_r_ihmaster_data_reg_2_/CK
0.0727 0.0000 5.0024 r SDFFRX1
u_asic/u_ahb0_U_ahb_U_mux_r_ihmaster_data_reg_2_/Q
0.0414 5 0.5644 0.6894 5.6917 r u_asic/n93780
u_asic/U134068/C 0.5645 0.0001 5.6918 r NOR3BX2
u_asic/U134068/Y 0.0224 2 0.2087 0.2212 5.9130 f u_asic/n207488
u_asic/U134068ASThfnInst1881/A
0.2089 0.0002 5.9132 f BUFX4
u_asic/U134068ASThfnInst1881/Y
0.1388 13 0.2760 0.3088 6.2220 f u_asic/n207488ASThfnNet1881
u_asic/U156917/A0
0.2798 0.0048 6.2268 f AOI22X1
u_asic/U156917/Y 0.0194 1 0.5148 0.3549 6.5817 r u_asic/n207489
u_asic/U156916/B0
0.5150 0.0002 6.5819 r OAI21X2
u_asic/U156916/Y 0.0365 1 0.2609 0.2451 6.8270 f u_asic/n207497
u_asic/U152683/AN
0.2615 0.0007 6.8277 f NAND4BX4
u_asic/U152683/Y 0.0376 1 0.2413 0.2642 7.0919 f u_asic/n216657
u_asic/U152683ASTttcInst7560/A
0.2419 0.0007 7.0926 f BUFX20
u_asic/U152683ASTttcInst7560/Y
0.2126 4 0.1066 0.2039 7.2964 f u_asic/n216657ASTttcNet5687
u_asic/U152683ASThfnInst1869/A
0.1189 0.0154 7.3118 f BUFX2
u_asic/U152683ASThfnInst1869/Y
0.0790 5 0.3052 0.3189 7.6307 f u_asic/n216657ASThfnNet1869
u_asic/U152683ASTttcInst2008/A
0.3054 0.0002 7.6310 f BUFX8
u_asic/U152683ASTttcInst2008/Y
0.3518 16 0.3427 0.3666 7.9976 f u_asic/n216657ASTttcNet2008
u_asic/U136638/A1
0.3596 0.0212 8.0188 f AOI222X1
u_asic/U136638/Y 5.1467 2 117.1409 65.6257 73.6445 r TRI u_asic/n194814
u_asic/U158063/B 117.1507 0.0122 73.6567 r MXI2X1
u_asic/U158063/Y 5.1656 5 61.8003 728.7419 802.3986 f TRI u_asic/n216666
u_asic/U166977/A1
61.8006 0.6383 803.0369 f AOI22X1
u_asic/U166977/Y 0.0298 5 8.8050 16.6080 819.6449 r u_asic/n216700
u_asic/U166970/A 8.8052 0.0002 819.6451 r XNOR2X1
u_asic/U166970/Y 0.0053 1 2.5300 1.9354 821.5806 f u_asic/n216677
u_asic/U166969/A 2.5300 0.0000 821.5806 f NAND3X1
u_asic/U166969/Y 0.0041 1 0.4559 0.4804 822.0610 r u_asic/n216678
u_asic/U156907/C0
0.4559 0.0000 822.0610 r OAI211X1
u_asic/U156907/Y 0.0150 1 0.8116 0.2506 822.3116 f addr_per[22]
u_io_pad/U156907ASTttcInst7672/A
0.8117 0.0001 822.3117 f BUFX4
u_io_pad/U156907ASTttcInst7672/Y
0.0398 1 0.1161 0.3213 822.6330 f u_io_pad/addr_per_22_ASTttcNet5758
u_io_pad/U156907ASTttcInst7671/A
0.1166 0.0006 822.6336 f BUFX12
u_io_pad/U156907ASTttcInst7671/Y
0.2265 1 0.1650 0.2144 822.8480 f u_io_pad/addr_per_22_ASTttcNet5757
u_io_pad/U156907ASTttcInst19437/A
0.1936 0.0357 822.8837 f BUFX20
u_io_pad/U156907ASTttcInst19437/Y
0.3647 1 0.1382 0.1913 823.0750 f u_io_pad/addr_per_22_ASTttcNet7780
u_io_pad/A22/I 0.3748 0.1044 823.1794 f PBU4W
u_io_pad/A22/PAD 12.1590 1 4.4712 3.3910 826.5704 f NDT pad_addr[22]
pad_addr[22] 4.4712 0.0000 826.5704 f
---------------------------------------------------------------------------------
Rising edge of clock clk_HCLK 16.0000 16.0000
Clock Source delay 3.1106 19.1106
Clock Network delay 3.1408 22.2513
Clock Skew 0.1000 22.1513
Output delay 1.0000 21.1513
---------------------------------------------------------------------------------
Required time 21.1513
Arrival time 826.5704
---------------------------------------------------------------------------------
Slack -805.4191 (VIOLATED) |
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发表于 2012-5-23 16:43:05
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