87 lines
3.1 KiB
HTML
87 lines
3.1 KiB
HTML
<HTML>
|
|
<HEAD>
|
|
<STYLE type="text/css">
|
|
H1 {color: black }
|
|
H2 {color: maroon }
|
|
H3 {color: #007090 }
|
|
A.head:link {color: #0060a0 }
|
|
A.head:visited {color: #3040c0 }
|
|
A.head:active {color: white }
|
|
A.head:hover {color: yellow }
|
|
A.red:link {color: red }
|
|
A.red:visited {color: maroon }
|
|
A.red:active {color: yellow }
|
|
</STYLE>
|
|
</HEAD>
|
|
<TITLE>Magic-8.3 Command Reference</TITLE>
|
|
<BODY BACKGROUND=graphics/blpaper.gif>
|
|
<H1> <IMG SRC=graphics/magic_title8_3.png ALT="Magic VLSI Layout Tool Version 8.3">
|
|
<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
|
|
|
|
<H2>antennacheck</H2>
|
|
<HR>
|
|
Run antenna violation checks on the current edit cell.
|
|
<HR>
|
|
|
|
<H3>Usage:</H3>
|
|
<BLOCKQUOTE>
|
|
<B>antennacheck</B> [<I>option</I>] <BR><BR>
|
|
<BLOCKQUOTE>
|
|
where <I>option</I> may be one of the following:
|
|
<DL>
|
|
<DT> <B>run</B>
|
|
<DD> "<B>antennacheck run</B>" is equivalent to "<B>antennacheck</B>"
|
|
with no arguments, and causes an antenna violation check to be
|
|
run.
|
|
<DT> <B>debug</B>
|
|
<DD> Sets up debug mode for the next antenna run. In addition to
|
|
feedback entries, additional information will be printed to
|
|
the terminal about each error encountered.
|
|
</DL>
|
|
</BLOCKQUOTE>
|
|
</BLOCKQUOTE>
|
|
|
|
<H3>Summary:</H3>
|
|
<BLOCKQUOTE>
|
|
The <B>antennacheck</B> command runs a full check for antenna violations
|
|
on the entire area of the cell being edited. Antenna violations are
|
|
defined in the technology file as the ratios of metal area to sensitive
|
|
MOSFET transistor gate areas to which the metal is attached. The antenna
|
|
effect is a manufacturing problem caused by charge buildup on gates
|
|
during metal etching. The metal being etched forms an antenna that
|
|
gathers charge on the net connected to the gate. If the area of metal
|
|
is large enough the gate can be destroyed by the process of etching.
|
|
The foundry specifies what the area ratio limit must be. The check is
|
|
done progressively from the lowest metal layer to the highest. If
|
|
violations are found, then feedback entries are created covering the
|
|
area of both the gate and the metal layer at which the violation occurred.
|
|
<P>
|
|
|
|
The <B>extract</B> command must be run prior to <B>antennacheck</B> to
|
|
obtain the extracted characteristics of the design, so that all
|
|
sensitive transistor gates can be identified and enumerated. <P>
|
|
</BLOCKQUOTE>
|
|
|
|
<H3>Implementation Notes:</H3>
|
|
<BLOCKQUOTE>
|
|
<B>antennacheck</B> is implemented as a built-in <B>magic</B> command.
|
|
The <B>antennacheck</B> command was introduced in magic version
|
|
8.2.150 along with technology file extensions to support the antenna
|
|
rule violations (see the online Maintainer's Manual #2).
|
|
</BLOCKQUOTE>
|
|
|
|
<H3>See Also:</H3>
|
|
<BLOCKQUOTE>
|
|
<A HREF=extract.html><I>extract</I></A> <BR>
|
|
</BLOCKQUOTE>
|
|
|
|
<P><IMG SRC=graphics/line1.gif><P>
|
|
<TABLE BORDER=0>
|
|
<TR>
|
|
<TD> <A HREF=commands.html>Return to command index</A>
|
|
</TR>
|
|
</TABLE>
|
|
<P><I>Last updated:</I> March 7, 2020 at 1:06pm <P>
|
|
</BODY>
|
|
</HTML>
|