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Hello 請教一下3 U# d: [: s; z& Q( _' Q
# g& d1 W3 b- J6 L( \- S) t2 @9 W. C我的 FPGA 是 Virtex5
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2 f. `7 ]; \6 m0 r" v' d9 h, {用 Xilinx 的 Core generator 產生一個 DCM_ADV
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$ Q, h* j: L0 o" o; f程式碼如下
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我用 ISim 模擬波形是正常的
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4 Q. g. @0 y- }3 A8 a# m% W但用 modelsim 卻都是出0
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(CLK0_OUT 和 LOCKED_OUT) (我有compile Xilinx 的 library了)
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' b* x) T1 f0 O( x2 G4 P9 g) y想請教是否哪裡設定錯誤8 H0 g9 l3 {) H3 A x2 D! O
6 i, t: a4 `7 X" Y- o i2 k或者程式有錯
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; c3 e% L5 H* V5 ~' {* u+ D謝謝各位了~' L+ T! a' t# M( o) d; E
% ^9 ]4 }' f4 w! ?7 l& tmodule tb;* K& E" F8 S$ \; ]6 A
reg clk, rst;
% U. W% F$ z9 \) H1 s& s! |; `9 uwire out, out2;
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# M0 C6 s& ?7 U7 B6 Q$ ~0 ~, tLED led(.clk(clk), .rst(rst), .out(out), .out2(out2));; ?# j/ g6 S" h# u& _
0 p. U* ^, J7 H7 f uinitial begin
+ U+ U' [4 e+ @* o9 [4 X) ]- e clk = 0;6 w8 g. D8 X) M3 ?7 n2 a
rst = 0;0 k0 e! M7 ]+ }4 C2 ~& A0 T1 b6 Q8 \
#30000 rst = 1;% I( m- U0 @3 D" J4 H
#10000 rst = 0;7 c# K0 v9 k& ]6 ~
end
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always #5 clk = ~clk;
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endmodule6 {7 B% c3 J3 s: E' E) n& s- \
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module LED(clk, rst, out, out2);
. ^- ~7 U2 E% Z1 Y& Vinput clk;
8 m3 `& z \$ G9 h% }4 Linput rst;
2 J" j( U/ m7 K6 y" A9 houtput out;" e5 k/ V) N% o& Z* t' b3 {. \# R
output out2;" |9 l/ q) J6 c$ [) v0 s
$ f! J" E; m- {dcmp2d_jitter_v12_1 inst_dcm(
3 P( @& f3 Y) Q0 `8 c* n; N .CLKIN1_IN(clk),8 w7 f4 r: y5 O- q
.RST_IN(rst),3 M2 v; i' m) {% @9 E7 ]0 v% [
.CLK0_OUT(out),
# V* p; I; u+ w. Z3 l .LOCKED_OUT(out2));
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endmodule |
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