add: sdc file

Author: SurfaceYellowDuck

tang20k/scr1/tang20k_scr1.sdc

@@ -0,0 +1,9 @@
+//Copyright (C)2014-2025 GOWIN Semiconductor Corporation.
+//All rights reserved.
+//File Title: Timing Constraints file
+//Tool Version: V1.9.10.03 Education 
+//Created Time: 2025-02-19 13:51:59
+create_clock -name CLK -period 37.037 -waveform {0 18.518} [get_ports {CLK}] -add
+create_clock -name JTAG_TCK -period 1000 -waveform {0 125} [get_ports {JTAG_TCK}] -add
+set_input_delay -clock JTAG_TCK 6.6 -add_delay [get_ports {JTAG_TMS JTAG_TDI}]
+set_output_delay -clock JTAG_TCK 3.3 -add_delay [get_ports {JTAG_TDO}]