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tdp_buff[4] <=3D 1;<BR> =20
tdp_buff[3:1] <=3D 3'b000;<BR> =
=20
<BR> =
tdn_buff[4:1]=20
<=3D 4'b0000;<BR> =
<BR> =20
if(data_in_buff)<BR> =
=20
begin<BR> =20
tdn_buff[5] <=3D data_in_buff;<BR> =
=20
tdp_buff[5] <=3D 0;<BR> =20
select_pn <=3D0;<BR> =20
end<BR> =20
else<BR> =20
begin<BR> =20
tdp_buff[5] <=3D 0;<BR> =20
tdn_buff[5] <=3D 0;<BR> =20
end<BR> =
<BR> =20
end<BR> =20
end<BR> =
<BR> =20
else //replace code =3D 4'b1001; =
<BR> =20
begin =
=20
=20
<BR> =
=20
if(!select_pn)<BR> =20
begin<BR> =20
tdp_buff[1] <=3D 1;<BR> =20
tdp_buff[3:2] <=3D 2'b00;<BR> =
=20
tdp_buff[4] <=3D 1;<BR> =20
<BR> =
tdn_buff[4:1]=20
<=3D 0;<BR> <BR> =
=20
if(data_in_buff)<BR> =20
begin<BR> =20
tdn_buff[5] <=3D data_in_buff;<BR> =
=20
tdp_buff[5] <=3D 0;<BR> =20
end<BR> =20
else<BR> =20
begin<BR> =20
tdp_buff[5] <=3D 0;<BR> =20
tdn_buff[5] <=3D 0;<BR> =20
select_pn <=3D 1;<BR> =20
end<BR> =20
end<BR> =
else=20
<BR> begin<BR> =
=20
tdn_buff[1] <=3D 1;<BR> =20
tdn_buff[3:2] <=3D 2'b00;<BR> =
=20
tdn_buff[4] <=3D 1;<BR> =20
<BR> =
tdp_buff[4:1]=20
<=3D 0;<BR> <BR> =
=20
if(data_in_buff)<BR> =20
begin<BR> =20
tdp_buff[5] <=3D data_in_buff;<BR> =
=20
tdn_buff[5] <=3D 0;<BR> =20
end<BR> =20
else<BR> =20
begin<BR> =20
tdp_buff[5] <=3D 0;<BR> =20
tdn_buff[5] <=3D 0;<BR> =20
select_pn <=3D 0;<BR> =20
end<BR> =20
end<BR> =20
end<BR> =20
end<BR> =20
<BR>else<BR>begin<BR>tdp_buff[4:1] <=3D=20
tdp_buff[5:2];<BR>tdn_buff[4:1] <=3D=20
=
tdn_buff[5:2];<BR>if(data_in_buff)<BR>begin<BR>if(!select_pn)<BR>begin<BR=
>tdp_buff[5]=20
<=3D data_in_buff;<BR>tdn_buff[5] <=3D 0;<BR>select_pn =
<=3D=20
1;<BR>end<BR>else<BR>begin<BR>tdn_buff[5] <=3D=20
data_in_buff;<BR>tdp_buff[5] <=3D 0;<BR>select_pn <=3D=20
0;<BR>end<BR>end<BR>else<BR>begin<BR>tdp_buff[5] <=3D =
0;<BR>tdn_buff[5]=20
<=3D 0;<BR>end<BR>end<BR>end<BR>end<BR> =
=20
=20
=20
=
<BR>endmodule<BR>=BD=E2=C2=EB=B2=BF=B7=D6=A3=BA<BR>module=20
r_hdb3(clock,reset,rdp,rdn,data_out);<BR>input =
clock,reset;<BR>input=20
rdp,rdn;<BR>output data_out;<BR>//internal register<BR>reg[4:0]=20
data_reg,dn_reg;<BR>wire r_data=3Drdp+rdn;<BR>always @(posedge =
clock or=20
negedge reset)<BR> if(!reset)<BR> =
begin<BR> =20
data_reg<=3D0;<BR> =20
dn_reg<=3D0;<BR> =
end<BR> else<BR> =20
begin<BR> =20
=
if(data_reg[4:2]=3D=3D3'b001&&r_data&&rdn=3D=3Ddn_r=
eg[2])<BR> =20
=20
data_reg<=3D{4'b0000,data_reg[1]};<BR> =20
else<BR> =20
if(data_reg[4:1]=3D=3D4'b0001 &&r_data=20
&&rdn=3D=3Ddn_reg[1])<BR> =
=20
data_reg<=3D5'b00001;<BR> =20
else<BR> =20
data_reg<=3D{r_data,data_reg[4:1]};<BR> =
=20
dn_reg<=3D{rdn,dn_reg[4:1]};<BR> end<BR>assign=20
data_out=3Ddata_reg[0];<BR>endmodule</DIV></DIV>
<DIV></DIV></TD></TR>
<TR>
<TD class=3Dpostauthor>
<DIV class=3D"popupmenu_popup userinfopanel" =
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<DL>
<DT>=CC=FB=D7=D3</DT>
<DD>1245 </DD>
<DT>=BE=AB=BB=AA</DT>
<DD><A=20
=
href=3D"http://www.edacn.net/bbs/digest.php?authorid=3D9777">4</A> <=
/DD>
<DT>=BB=FD=B7=D6</DT>
<DD>734 </DD>
<DT>=BB=EE=D4=BE=D6=B8=CA=FD</DT>
<DD>0 </DD>
<DT>=C0=B4=D7=D4</DT>
<DD>=B1=B1=BE=A9 </DD>
<DT>=D4=DA=CF=DF=CA=B1=BC=E4</DT>
<DD>141 =D0=A1=CA=B1 </DD>
<DT>=D7=A2=B2=E1=CA=B1=BC=E4</DT>
<DD>2004-9-12 </DD>
<DT>=D7=EE=BA=F3=B5=C7=C2=BC</DT>
<DD>2007-12-6 </DD></DL>
<P><A=20
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<TD class=3Dpostcontent>
<DIV class=3Dpostinfo><STRONG id=3Dpostnum_248554 =
title=3D=B8=B4=D6=C6=CC=FB=D7=D3=C1=B4=BD=D3=B5=BD=BC=F4=CC=F9=B0=E5=20
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')">3<SUP>#</SUP></STRONG>=20
<EM =
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=
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<EM=20
=
onclick=3D"$('postmessage_248554').className=3D't_smallfont'">=D0=A1</EM>=
=B7=A2=B1=ED=D3=DA=20
2005-11-8 16:53 <A=20
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<DIV class=3Dt_msgfont =
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<DT>=BE=AB=BB=AA</DT>
<DD><A=20
=
href=3D"http://www.edacn.net/bbs/digest.php?authorid=3D37320">0</A> =
</DD>
<DT>=BB=FD=B7=D6</DT>
<DD>317 </DD>
<DT>=BB=EE=D4=BE=D6=B8=CA=FD</DT>
<DD>0 </DD>
<DT>=D4=DA=CF=DF=CA=B1=BC=E4</DT>
<DD>16 =D0=A1=CA=B1 </DD>
<DT>=D7=A2=B2=E1=CA=B1=BC=E4</DT>
<DD>2005-11-5 </DD>
<DT>=D7=EE=BA=F3=B5=C7=C2=BC</DT>
<DD>2006-11-22 </DD></DL>
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