Synthesis Messages
| Report Title | GowinSynthesis Report |
| Design File | D:\Gowin\Gowin_V1.9.12_x64\IDE\ipcore\DDR3\data\ddr3_1_4code_hs\ddr3_1_4code_hs.v D:\Gowin\Gowin_V1.9.12_x64\IDE\ipcore\DDR3\data\ddr3_1_4code_hs\DDR3_TOP.v |
| GowinSynthesis Constraints File | --- |
| Tool Version | V1.9.12 (64-bit) |
| Part Number | GW5AT-LV60PG484AC1/I0 |
| Device | GW5AT-60 |
| Device Version | B |
| Created Time | Fri Oct 10 15:54:09 2025 |
| Legal Announcement | Copyright (C)2014-2025 Gowin Semiconductor Corporation. ALL rights reserved. |
Synthesis Details
| Top Level Module | DDR3_Memory_Interface_Top |
| Synthesis Process | Running parser: CPU time = 0h 0m 0.75s, Elapsed time = 0h 0m 0.807s, Peak memory usage = 119.027MB Running netlist conversion: CPU time = 0h 0m 0.078s, Elapsed time = 0h 0m 0.072s, Peak memory usage = 119.027MB Running device independent optimization: Optimizing Phase 0: CPU time = 0h 0m 0.328s, Elapsed time = 0h 0m 0.328s, Peak memory usage = 119.027MB Optimizing Phase 1: CPU time = 0h 0m 0.156s, Elapsed time = 0h 0m 0.16s, Peak memory usage = 119.027MB Optimizing Phase 2: CPU time = 0h 0m 0.468s, Elapsed time = 0h 0m 0.468s, Peak memory usage = 119.027MB Running inference: Inferring Phase 0: CPU time = 0h 0m 0.265s, Elapsed time = 0h 0m 0.279s, Peak memory usage = 119.027MB Inferring Phase 1: CPU time = 0h 0m 0.062s, Elapsed time = 0h 0m 0.069s, Peak memory usage = 119.027MB Inferring Phase 2: CPU time = 0h 0m 0.046s, Elapsed time = 0h 0m 0.038s, Peak memory usage = 119.027MB Inferring Phase 3: CPU time = 0h 0m 0.015s, Elapsed time = 0h 0m 0.019s, Peak memory usage = 119.027MB Running technical mapping: Tech-Mapping Phase 0: CPU time = 0h 0m 0.296s, Elapsed time = 0h 0m 0.296s, Peak memory usage = 119.027MB Tech-Mapping Phase 1: CPU time = 0h 0m 0.125s, Elapsed time = 0h 0m 0.122s, Peak memory usage = 119.027MB Tech-Mapping Phase 2: CPU time = 0h 0m 0.078s, Elapsed time = 0h 0m 0.076s, Peak memory usage = 119.027MB Tech-Mapping Phase 3: CPU time = 0h 0m 3s, Elapsed time = 0h 0m 3s, Peak memory usage = 132.688MB Tech-Mapping Phase 4: CPU time = 0h 0m 0.359s, Elapsed time = 0h 0m 0.382s, Peak memory usage = 132.688MB Generate output files: CPU time = 0h 0m 0.312s, Elapsed time = 0h 0m 0.315s, Peak memory usage = 135.930MB |
| Total Time and Memory Usage | CPU time = 0h 0m 6s, Elapsed time = 0h 0m 6s, Peak memory usage = 135.930MB |
Resource
Resource Usage Summary
| Resource | Usage |
| I/O Port | 371 |
| I/O Buf | 365 |
| IBUF | 182 |
| OBUF | 162 |
| TBUF | 2 |
| IOBUF | 16 |
| ELVDS_OBUF | 1 |
| ELVDS_IOBUF | 2 |
| Register | 3565 |
| DFFSE | 1 |
| DFFRE | 249 |
| DFFPE | 66 |
| DFFCE | 3249 |
| LUT | 2149 |
| LUT2 | 306 |
| LUT3 | 950 |
| LUT4 | 893 |
| ALU | 125 |
| ALU | 125 |
| INV | 21 |
| INV | 21 |
| IOLOGIC | 76 |
| IDES8_MEM | 16 |
| OSER8 | 24 |
| OSER8_MEM | 20 |
| IODELAY | 16 |
| BSRAM | 8 |
| SDPB | 4 |
| SDPX9B | 4 |
| CLOCK | 4 |
| CLKDIV | 1 |
| DQS | 2 |
| DDRDLL | 1 |
Resource Utilization Summary
| Resource | Usage | Utilization |
| Logic | 2295(2170 LUT, 125 ALU) / 59904 | 4% |
| Register | 3565 / 60780 | 6% |
| --Register as Latch | 0 / 60780 | 0% |
| --Register as FF | 3565 / 60780 | 6% |
| BSRAM | 8 / 118 | 7% |
Timing
Clock Summary:
| NO. | Clock Name | Type | Period | Frequency(MHz) | Rise | Fall | Source | Master | Object |
|---|---|---|---|---|---|---|---|---|---|
| 1 | memory_clk | Base | 10.000 | 100.000 | 0.000 | 5.000 | memory_clk_ibuf/I | ||
| 2 | clk | Base | 10.000 | 100.000 | 0.000 | 5.000 | clk_ibuf/I | ||
| 3 | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT.default_gen_clk | Generated | 40.000 | 25.000 | 0.000 | 20.000 | memory_clk_ibuf/I | memory_clk | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT |
Max Frequency Summary:
| NO. | Clock Name | Constraint | Actual Fmax | Logic Level | Entity |
|---|---|---|---|---|---|
| 1 | memory_clk | 100.000(MHz) | 1164.144(MHz) | 1 | TOP |
| 2 | clk | 100.000(MHz) | 191.113(MHz) | 6 | TOP |
| 3 | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT.default_gen_clk | 25.000(MHz) | 173.160(MHz) | 3 | TOP |
Detail Timing Paths Information
Path 1
Path Summary:| Slack | 2.435 |
| Data Arrival Time | 2.396 |
| Data Required Time | 4.831 |
| From | gw3_top/u_ddr_phy_top/u_ddr_init/read_rclksel_conf_1_s0 |
| To | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[1].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs |
| Launch Clk | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT.default_gen_clk[F] |
| Latch Clk | memory_clk[R] |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 0.000 | 0.000 | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT.default_gen_clk | |||
| 0.362 | 0.362 | tCL | RR | 3604 | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT |
| 0.737 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_init/read_rclksel_conf_1_s0/CLK |
| 1.120 | 0.382 | tC2Q | RR | 11 | gw3_top/u_ddr_phy_top/u_ddr_init/read_rclksel_conf_1_s0/Q |
| 1.495 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_init/hold_Z_1_s/I0 |
| 2.021 | 0.526 | tINS | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_init/hold_Z_1_s/F |
| 2.396 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[1].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs/HOLD |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 5.000 | 0.000 | memory_clk | |||
| 5.000 | 0.000 | tCL | FF | 1 | memory_clk_ibuf/I |
| 5.000 | 0.000 | tINS | FF | 64 | memory_clk_ibuf/O |
| 5.350 | 0.350 | tNET | FF | 1 | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[1].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs/FCLK |
| 5.315 | -0.035 | tUnc | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[1].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs | ||
| 4.831 | -0.484 | tSu | 1 | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[1].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs |
| Clock Skew: | -0.387 |
| Setup Relationship: | 5.000 |
| Logic Level: | 2 |
| Arrival Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
| Arrival Data Path Delay: | cell: 0.526, 31.726%; route: 0.750, 45.214%; tC2Q: 0.382, 23.060% |
| Required Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
Path 2
Path Summary:| Slack | 2.435 |
| Data Arrival Time | 2.396 |
| Data Required Time | 4.831 |
| From | gw3_top/u_ddr_phy_top/u_ddr_init/read_rclksel_conf_0_s0 |
| To | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[0].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs |
| Launch Clk | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT.default_gen_clk[F] |
| Latch Clk | memory_clk[R] |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 0.000 | 0.000 | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT.default_gen_clk | |||
| 0.362 | 0.362 | tCL | RR | 3604 | gw3_top/u_ddr_phy_top/fclkdiv/CLKOUT |
| 0.737 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_init/read_rclksel_conf_0_s0/CLK |
| 1.120 | 0.382 | tC2Q | RR | 11 | gw3_top/u_ddr_phy_top/u_ddr_init/read_rclksel_conf_0_s0/Q |
| 1.495 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_init/hold_Z_0_s/I0 |
| 2.021 | 0.526 | tINS | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_init/hold_Z_0_s/F |
| 2.396 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[0].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs/HOLD |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 5.000 | 0.000 | memory_clk | |||
| 5.000 | 0.000 | tCL | FF | 1 | memory_clk_ibuf/I |
| 5.000 | 0.000 | tINS | FF | 64 | memory_clk_ibuf/O |
| 5.350 | 0.350 | tNET | FF | 1 | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[0].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs/FCLK |
| 5.315 | -0.035 | tUnc | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[0].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs | ||
| 4.831 | -0.484 | tSu | 1 | gw3_top/u_ddr_phy_top/u_ddr_phy_wds/data_lane_gen[0].u_ddr_phy_data_lane/u_ddr_phy_data_io/u_dqs |
| Clock Skew: | -0.387 |
| Setup Relationship: | 5.000 |
| Logic Level: | 2 |
| Arrival Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
| Arrival Data Path Delay: | cell: 0.526, 31.726%; route: 0.750, 45.214%; tC2Q: 0.382, 23.060% |
| Required Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
Path 3
Path Summary:| Slack | 4.768 |
| Data Arrival Time | 5.544 |
| Data Required Time | 10.311 |
| From | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3 |
| To | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_13_s1 |
| Launch Clk | clk[R] |
| Latch Clk | clk[R] |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 0.000 | 0.000 | clk | |||
| 0.000 | 0.000 | tCL | RR | 1 | clk_ibuf/I |
| 0.000 | 0.000 | tINS | RR | 40 | clk_ibuf/O |
| 0.375 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3/CLK |
| 0.757 | 0.382 | tC2Q | RR | 6 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3/Q |
| 1.132 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n53_s2/I0 |
| 1.659 | 0.526 | tINS | RR | 4 | gw3_top/u_ddr_phy_top/ddr_sync/n53_s2/F |
| 2.034 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n50_s3/I1 |
| 2.550 | 0.516 | tINS | RR | 4 | gw3_top/u_ddr_phy_top/ddr_sync/n50_s3/F |
| 2.925 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n46_s2/I2 |
| 3.386 | 0.461 | tINS | RR | 3 | gw3_top/u_ddr_phy_top/ddr_sync/n46_s2/F |
| 3.761 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n45_s2/I1 |
| 4.278 | 0.516 | tINS | RR | 2 | gw3_top/u_ddr_phy_top/ddr_sync/n45_s2/F |
| 4.653 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n44_s1/I1 |
| 5.169 | 0.516 | tINS | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n44_s1/F |
| 5.544 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_13_s1/D |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 10.000 | 0.000 | clk | |||
| 10.000 | 0.000 | tCL | RR | 1 | clk_ibuf/I |
| 10.000 | 0.000 | tINS | RR | 40 | clk_ibuf/O |
| 10.375 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_13_s1/CLK |
| 10.311 | -0.064 | tSu | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_13_s1 |
| Clock Skew: | 0.000 |
| Setup Relationship: | 10.000 |
| Logic Level: | 6 |
| Arrival Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
| Arrival Data Path Delay: | cell: 2.536, 49.069%; route: 2.250, 43.531%; tC2Q: 0.382, 7.400% |
| Required Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
Path 4
Path Summary:| Slack | 5.021 |
| Data Arrival Time | 5.290 |
| Data Required Time | 10.311 |
| From | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3 |
| To | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_14_s1 |
| Launch Clk | clk[R] |
| Latch Clk | clk[R] |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 0.000 | 0.000 | clk | |||
| 0.000 | 0.000 | tCL | RR | 1 | clk_ibuf/I |
| 0.000 | 0.000 | tINS | RR | 40 | clk_ibuf/O |
| 0.375 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3/CLK |
| 0.757 | 0.382 | tC2Q | RR | 6 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3/Q |
| 1.132 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n53_s2/I0 |
| 1.659 | 0.526 | tINS | RR | 4 | gw3_top/u_ddr_phy_top/ddr_sync/n53_s2/F |
| 2.034 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n50_s3/I1 |
| 2.550 | 0.516 | tINS | RR | 4 | gw3_top/u_ddr_phy_top/ddr_sync/n50_s3/F |
| 2.925 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n46_s2/I2 |
| 3.386 | 0.461 | tINS | RR | 3 | gw3_top/u_ddr_phy_top/ddr_sync/n46_s2/F |
| 3.761 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n45_s2/I1 |
| 4.278 | 0.516 | tINS | RR | 2 | gw3_top/u_ddr_phy_top/ddr_sync/n45_s2/F |
| 4.653 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n43_s1/I3 |
| 4.915 | 0.262 | tINS | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n43_s1/F |
| 5.290 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_14_s1/D |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 10.000 | 0.000 | clk | |||
| 10.000 | 0.000 | tCL | RR | 1 | clk_ibuf/I |
| 10.000 | 0.000 | tINS | RR | 40 | clk_ibuf/O |
| 10.375 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_14_s1/CLK |
| 10.311 | -0.064 | tSu | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_14_s1 |
| Clock Skew: | 0.000 |
| Setup Relationship: | 10.000 |
| Logic Level: | 6 |
| Arrival Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
| Arrival Data Path Delay: | cell: 2.283, 46.440%; route: 2.250, 45.778%; tC2Q: 0.382, 7.782% |
| Required Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
Path 5
Path Summary:| Slack | 5.594 |
| Data Arrival Time | 4.718 |
| Data Required Time | 10.311 |
| From | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3 |
| To | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_9_s1 |
| Launch Clk | clk[R] |
| Latch Clk | clk[R] |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 0.000 | 0.000 | clk | |||
| 0.000 | 0.000 | tCL | RR | 1 | clk_ibuf/I |
| 0.000 | 0.000 | tINS | RR | 40 | clk_ibuf/O |
| 0.375 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3/CLK |
| 0.757 | 0.382 | tC2Q | RR | 6 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_0_s3/Q |
| 1.132 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n53_s2/I0 |
| 1.659 | 0.526 | tINS | RR | 4 | gw3_top/u_ddr_phy_top/ddr_sync/n53_s2/F |
| 2.034 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n50_s3/I1 |
| 2.550 | 0.516 | tINS | RR | 4 | gw3_top/u_ddr_phy_top/ddr_sync/n50_s3/F |
| 2.925 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n48_s4/I0 |
| 3.451 | 0.526 | tINS | RR | 2 | gw3_top/u_ddr_phy_top/ddr_sync/n48_s4/F |
| 3.826 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n48_s5/I1 |
| 4.343 | 0.516 | tINS | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/n48_s5/F |
| 4.718 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_9_s1/D |
| AT | DELAY | TYPE | RF | FANOUT | NODE |
|---|---|---|---|---|---|
| 10.000 | 0.000 | clk | |||
| 10.000 | 0.000 | tCL | RR | 1 | clk_ibuf/I |
| 10.000 | 0.000 | tINS | RR | 40 | clk_ibuf/O |
| 10.375 | 0.375 | tNET | RR | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_9_s1/CLK |
| 10.311 | -0.064 | tSu | 1 | gw3_top/u_ddr_phy_top/ddr_sync/lock_cnt_9_s1 |
| Clock Skew: | 0.000 |
| Setup Relationship: | 10.000 |
| Logic Level: | 5 |
| Arrival Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |
| Arrival Data Path Delay: | cell: 2.085, 48.014%; route: 1.875, 43.178%; tC2Q: 0.382, 8.808% |
| Required Clock Path Delay: | cell: 0.000, 0.000%; route: 0.375, 100.000% |