dcm1.v

用ISE中各种工具设计“运动计时表”.加深对FPGA/CPLD设计流程的理解

// Module dcm1
// Generated by Xilinx Architecture Wizard
// Verilog
// Written for synthesis tool: XST
// Xilinx device: xc2v80-6fg256

module dcm1(CLKIN_IN, CLK0_OUT);

input CLKIN_IN;

output CLK0_OUT;

wire CLKIN_IBUFG;
wire CLKFB_IN;
wire CLK0_BUF;

assign CLK0_OUT = CLKFB_IN;

DCM DCM_INST(
    .CLKIN (CLKIN_IBUFG),
    .CLKFB (CLKFB_IN),
    .RST (1'b0),
    .PSEN (1'b0),
    .PSINCDEC (1'b0),
    .PSCLK (1'b0),
    .DSSEN (1'b0),
    .CLK0 (CLK0_BUF),
    .CLK90 (),
    .CLK180 (),
    .CLK270 (),
    .CLKDV (),
    .CLK2X (),
    .CLK2X180 (),
    .CLKFX (),
    .CLKFX180 (),
    .STATUS (),
    .LOCKED (),
    .PSDONE ());
// synthesis attribute CLK_FEEDBACK of DCM_INST is "1X"
// synthesis attribute CLKDV_DIVIDE of DCM_INST is 2
// synthesis attribute CLKFX_DIVIDE of DCM_INST is 1
// synthesis attribute CLKFX_MULTIPLY of DCM_INST is 4
// synthesis attribute CLKIN_DIVIDE_BY_2 of DCM_INST is "FALSE"
// synthesis attribute CLKIN_PERIOD of DCM_INST is 20
// synthesis attribute CLKOUT_PHASE_SHIFT of DCM_INST is "NONE"
// synthesis attribute DESKEW_ADJUST of DCM_INST is "SYSTEM_SYNCHRONOUS"
// synthesis attribute DFS_FREQUENCY_MODE of DCM_INST is "LOW"
// synthesis attribute DLL_FREQUENCY_MODE of DCM_INST is "LOW"
// synthesis attribute DUTY_CYCLE_CORRECTION of DCM_INST is "TRUE"
// synthesis attribute PHASE_SHIFT of DCM_INST is 0
// synthesis attribute STARTUP_WAIT of DCM_INST is "TRUE"
// synthesis translate_off
 defparam DCM_INST.CLK_FEEDBACK="1X";
 defparam DCM_INST.CLKDV_DIVIDE=2;
 defparam DCM_INST.CLKFX_DIVIDE=1;
 defparam DCM_INST.CLKFX_MULTIPLY=4;
 defparam DCM_INST.CLKIN_DIVIDE_BY_2="FALSE";
 defparam DCM_INST.CLKIN_PERIOD=20;
 defparam DCM_INST.CLKOUT_PHASE_SHIFT="NONE";
 defparam DCM_INST.DESKEW_ADJUST="SYSTEM_SYNCHRONOUS";
 defparam DCM_INST.DFS_FREQUENCY_MODE="LOW";
 defparam DCM_INST.DLL_FREQUENCY_MODE="LOW";
 defparam DCM_INST.DUTY_CYCLE_CORRECTION="TRUE";
 defparam DCM_INST.PHASE_SHIFT=0;
 defparam DCM_INST.STARTUP_WAIT="TRUE";
// synthesis translate_on

IBUFG CLKIN_IBUFG_INST(
    .I (CLKIN_IN),
    .O (CLKIN_IBUFG));

BUFG CLK0_BUFG_INST(
    .I (CLK0_BUF),
    .O (CLKFB_IN));

endmodule