如下是我的顶层模块，编译不报错。但是有警告WARNING:Xst:1290 - Hierarchical block <DACONTROL1> is unconnected in block <cartpro>. It will be removed from the design.一共用了三个模块，DCM时钟、软复位的reset和 DACONTROL1 ，综合后DACONTROL1这个模块确实被移除了，求教为什么。我有clk和i_rst是相连的啊？
module cartpro(
input in_clk,
inout sda,
output scl
);
wire
i_rst;
wire clk_ibufg_out;
wire clk;
wire h_speed_clk;
wire clk_locked;
colk colk(.CLKIN_IN(in_clk),
.RST_IN(i_rst),
.CLKFX_OUT(h_speed_clk),
.CLKIN_IBUFG_OUT(clk_ibufg_out),
.CLK0_OUT(clk),
.LOCKED_OUT(clk_locked));
reset reset1(
.clk(h_speed_clk),
.rest(i_rst));
wire [7:0]io_vcc;
wire [7:0] ioinh;
wire [7:0] ioinl;
DACONTROL DACONTROL1(
.clk(clk),
.rst_n(i_rst),
.iovccdata(io_vcc),
.ioinh(ioinh),
.ioinl(ioinl),
.sda(),
.scl()
);
endmodule |
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