Honored Contributor
Honored ContributorThank for your suggestion.The clock and I/O constraint is now correct.But my sopc system still have 63 unconstrained path.
In order to test the highest speed of NIOS II based on EP3C120N780C7,I construct a simplest sopc system which only using a NIOS II/f CPU,ALTPLL(50mhz in,100mhz,166.7mhz,2.5khz(seg7led clk) out),Timer,JTAG,ON-Chip RAM and a seg7led driver IP for display the status of the C program running. The NIOS II C program is normal at 100mhz system clk,but always dead when the sytem clk exceed 100mhz(125mhz,150mhz,166mhz). The uncontrained path is the only limit to the speed? The SOPC builder automatically generates a .sdc constraints file,I build another .sdc file for clk and I/O,all this .sdc file was add to the project,But the TimeQuest analysis still report 63 unconstrained path,I don't know how to resolve these path . (from)altera_reserved_tdi (to)asopc:inst|cpu_0:the_cpu_0|cpu_0_nios2_oci:the_cpu_0_nios2_oci|cpu_0_jtag_debug_module_wrapper:the_cpu_0_jtag_debug_module_wrapper|cpu_0_jtag_debug_module_tck:the_cpu_0_jtag_debug_module_tck|sr[0] altera_reserved_tck altera_reserved_tdi asopc:inst|cpu_0:the_cpu_0|cpu_0_nios2_oci:the_cpu_0_nios2_oci|cpu_0_jtag_debug_module_wrapper:the_cpu_0_jtag_debug_module_wrapper|cpu_0_jtag_debug_module_tck:the_cpu_0_jtag_debug_module_tck|sr[15] altera_reserved_tck altera_reserved_tdi asopc:inst|cpu_0:the_cpu_0|cpu_0_nios2_oci:the_cpu_0_nios2_oci|cpu_0_jtag_debug_module_wrapper:the_cpu_0_jtag_debug_module_wrapper|cpu_0_jtag_debug_module_tck:the_cpu_0_jtag_debug_module_tck|sr[35] altera_reserved_tck altera_reserved_tdi asopc:inst|cpu_0:the_cpu_0|cpu_0_nios2_oci:the_cpu_0_nios2_oci|cpu_0_jtag_debug_module_wrapper:the_cpu_0_jtag_debug_module_wrapper|cpu_0_jtag_debug_module_tck:the_cpu_0_jtag_debug_module_tck|sr[37] altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|count[9] altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|state altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|td_shift[0] altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|td_shift[10] altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|wdata[0] altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|wdata[7] altera_reserved_tck altera_reserved_tdi asopc:inst|jtag_uart_0:the_jtag_uart_0|alt_jtag_atlantic:jtag_uart_0_alt_jtag_atlantic|write_stalled altera_reserved_tck altera_reserved_tdi sld_hub:sld_hub_inst|irsr_reg[6] altera_reserved_tck altera_reserved_tdi sld_hub:sld_hub_inst|jtag_ir_reg[9] altera_reserved_tck altera_reserved_tdi sld_hub:sld_hub_inst|node_ena[1]~reg0 altera_reserved_tck altera_reserved_tdi sld_hub:sld_hub_inst|node_ena[2]~reg0 altera_reserved_tck altera_reserved_tdi sld_hub:sld_hub_inst|sld_rom_sr:hub_info_reg|WORD_SR[3] altera_reserved_tck altera_reserved_tdi sld_hub:sld_hub_inst|tdo_bypass_reg altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|hub_mode_reg[0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|hub_mode_reg[1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[1][0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[1][1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[1][2] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[1][3] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[1][4] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[2][0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[2][1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[2][2] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[2][3] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|irf_reg[2][4] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|node_ena[1]~reg0 altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|node_ena[2]~reg0 altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|reset_ena_reg altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[1][0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[1][1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[1][2] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[1][3] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[1][4] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[2][0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[2][1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[2][2] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[2][3] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|shadow_irf_reg[2][4] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[2] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[3] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[4] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[5] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[6] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[7] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[8] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[9] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[10] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[11] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[12] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[13] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[14] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|state[15] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|tms_cnt[0] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|tms_cnt[1] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|sld_shadow_jsm:shadow_jsm|tms_cnt[2] altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|virtual_dr_scan_reg altera_reserved_tck altera_reserved_tms sld_hub:sld_hub_inst|virtual_ir_scan_reg altera_reserved_tck
