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<TITLE>The Linux Serial HOWTO: $B$=$NB>$N%7%j%"%k%G%P%$%9(B ($BHsF14|(B EIA-232 $B0J30$N$b$N(B) </TITLE>
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<H2><A NAME="non_rs232"></A> <A NAME="s18">18.</A> <A HREF="Serial-HOWTO.html#toc18">$B$=$NB>$N%7%j%"%k%G%P%$%9(B ($BHsF14|(B EIA-232 $B0J30$N$b$N(B) </A></H2>
<H2><A NAME="non_232"></A> <A NAME="ss18.1">18.1</A> <A HREF="Serial-HOWTO.html#toc18.1">EIA-232 $B$N8e7Q(B </A>
</H2>
<P>$B%D%$%9%H%Z%"(B($BJ?9U7?EAAw(B)$B5;=Q$rMQ$$$F9bB.!&D95wN%$r<B8=$9$k$?$a$K!"(B
$B$?$/$5$s$N(B EIA $B5,3J$,:#$^$G$K:n$i$l$^$7$?!#J?9U7?$NEAAw$O!">l9g$K$h$C(B
$B$F$O(B $BHsJ?9U7?$N(B EIA-232 $B$h$j$bI4G\$bB.$$$3$H$,$"$j$^$9!#$"$kB.EY$N>l9g!"(B
$B5wN%(B($B:GBg%1!<%V%kD9(B)$B$O%D%$%9%H%Z%"$r;H$C$?J}$,2?G\$bD9$/$G$-$^$9!#$G$9(B
$B$,(B PC $B$G$O!V;~BeCY$l$J!W(BEIA-232 $B$,;H$o$lB3$1$F$$$^$9!#$H$$$&$N$b!"(B
$B%b%G%`$d%^%&%9$O%1!<%V%k$,C;$$$?$a!"$3$l$G==J,$@$+$i$G$9!#$3$N(B HOWTO
$BJ8=q$,:G?7HG$G$"$j!"$+$D0J2<$K<($9Hs(B EIA-232 $B$r(B Linux $B$,%5%]!<%H$7$F$$(B
$B$l$P!"I.<T$K$*CN$i$;$/$@$5$$!#(B</P>
<H2><A NAME="ss18.2">18.2</A> <A HREF="Serial-HOWTO.html#toc18.2">EIA-422-A ($BJ?9U7?(B) $B$H(B EIA-423-A ($BHsJ?9U7?(B)</A>
</H2>
<P>EIA-423 $B$OHsJ?9U7?$N(B EIA-232 $B$H$[$H$s$IF1$8$G$9$,!"EE05$,(B 5 V
$B$7$+$J$$E@$,0[$J$j$^$9!#$3$l$O(B EIA-232 $B5,3J$K4^$^$l$k$N$G!"(BEIA-423 $B$O(B
EIA-232 $B%]!<%H$K@\B3$9$k$3$H$,$G$-$^$9!#$3$N;EMM$O(B EIA-232 $B$h$jB?>/(B
$BB.$$B.EY$r5a$a$F$$$^$9(B($B$G$9$,D9;~4VF0:n$9$k$HHsJ?9UEAAw$,>WFM$r5/$3$9(B
$B$N$G!"$3$l$O$[$H$s$ILr$KN)$A$^$;$s(B)$B!#(B</P>
<P>Apple $B$N(B Macintosh $B$N$&$A!"(B1998 $BG/$NCf:"$h$j8E$$$b$N$K$O(B
EIA-232/EIA-422 $B%]!<%H$,IU$$$F$*$j!"%D%$%9%H%Z%"(B($BJ?9U7?(B)$B$rAw<u?.(B(422
$B$H$7$F;H$C$?;~(B)$B$K;H$&$3$H$,$G$-$^$7$?!#$3$l$O(B($B;EMM>e$O(B) EIA-423($B$3$l<+(B
$BBN$O(B EIA-232 $B$h$jB?>/9bB.$G$9(B) $B$N$A$g$&$I(B 100 $BG\9bB.$G$9!#(B Macintosh
$B$O>.$5$/$F4]$$(B "$B%_%K(B DIN-8" $B%3%M%/%?$r;H$C$F$$$^$7$?!#=>Mh$N(B EIA-232
$B%]!<%H$bIU$$$F$$$^$7$?$,!"$3$l$O(B 5 V $B$G$7$+;H$($^$;$s$G$7$?(B($B$=$l$G(B
$B$b@5Ev$J(B EIA-232 $B$G$9(B)$B!#$3$l$r(B EIA-232 $B$HF1$8$h$&$K;H$&$K$O!"(B
RxD+ ($BJ?9U%Z%"$NJRJ}$NC<(B)$B$r@\CO$7$?FC<l$J%1!<%V%k$r;H$$!"(B
RxD- $B$r<u?.%T%s$H$7$F;H$o$J$1$l$P$J$j$^$;$s!#(B
TxD- $B$OAw?.%T%s$H$7$F;H$o$l$^$9$,!"$$$/$D$+$NM}M3$K$h$C$F(B TxD+ $B$O@\CO(B
$B$7$F$O$J$j$^$;$s!#(B
<A HREF="http://www.modemshop.com/csm-comm-faq.html">Macintosh Communications FAQ</A> $B$b;2>H$7$F$/$@$5$$!#$7$+$7!"(BMacintosh ($B$*$h$S$3$l(B
$B$r2~NI$7$?$b$N(B)$B$O(B PC $B$h$j$bCMCJ$,9b$$$?$a!"(BLinux $BMQ$N%[%9%H%3%s%T%e!<(B
$B%?$H$7$F$O$"$^$j;H$o$l$F$$$^$;$s!#(B</P>
<H2><A NAME="ss18.3">18.3</A> <A HREF="Serial-HOWTO.html#toc18.3">EIA-485</A>
</H2>
<P> $B$3$l$O(B EIA-422 ($BJ?9U7?(B) $B$K;w$F$$$^$9!#H>Fs=E$G$9!#$3$l$O(B
point-to-point $B@\B3$@$1$G$J$/!"%^%k%A%I%m%C%W(B LAN (32 $B%N!<%I$^$G(B)$B$K$b(B
$B;H$&$3$H$,$G$-$^$9!#%3%M%/%?$N;EMM$OB8:_$7$^$;$s!#(B</P>
<H2><A NAME="ss18.4">18.4</A> <A HREF="Serial-HOWTO.html#toc18.4">EIA-530</A>
</H2>
<P> 2M $B%S%C%H(B/$BIC(B($BJ?9U7?(B) $B$N(B EIA-530-A ($BJ?9U7?$G$9$,!"HsJ?9U7?$H$7$F;H(B
$B$&$3$H$b$G$-$^$9(B)$B$O(B EIA-232 $B$rCV$-49$($k$?$a$N$b$N$G$7$?$,!"$[$H$s$I;H(B
$B$o$l$^$;$s$G$7$?!#(BEIA-232 $B$HF1$8(B 25 $B%T%s%3%M%/%?$r;H$$$^$9!#(B</P>
<H2><A NAME="ss18.5">18.5</A> <A HREF="Serial-HOWTO.html#toc18.5">EIA-612/613</A>
</H2>
<P>$B9bB.%7%j%"%k%$%s%?%U%'!<%9(B
(High Speed Serial Interface, HSSI = EIA-612/613)$B$G$O(B 50 $B%T%s$N%3%M%/(B
$B%?$r;H$$$^$9!#Ls(B 50 M $B%S%C%H(B/$BIC$NB.EY$,=P$^$9$,!"?t%a!<%H%k$N5wN%$G$7(B
$B$+;H$($^$;$s!#(BLinux $BMQ$K$b(B HSSI $B$r%5%]!<%H$7$F$$$k(B PCI $B%+!<%I$,$"$j$^(B
$B$9!#$3$N$h$&$J%+!<%I$rHNGd$7$F$$$k2q<R$,(B Linux $BMQ$N%I%i%$%P$rDs6!$7$F(B
$B$$$k$3$H(B($B$"$k$$$O%I%i%$%P$N$"$j$+$r<($7$F$$$k$3$H(B)$B$b$h$/$"$j$^$9!#$3$N(B
$BOCBj$K$D$$$F$O!"(Bmini-HOWTO $B$N$h$&$J$b$N$,I,MW$G$7$g$&!#(B</P>
<H2><A NAME="ss18.6">18.6</A> <A HREF="Serial-HOWTO.html#toc18.6">$BHFMQ%7%j%"%k%P%9(B (Universal Serial Bus, USB)</A>
</H2>
<P>$BHFMQ%7%j%"%k%P%9(B(USB)$B$O!"(BPCI $B%A%C%W$KAH$_9~$^$l$F$$$^$9!#?7$7$$(B PC
$B$O(B USB $B$rHw$($F$$$^$9!#(BUSB $B$O(B 4 $B%T%s%3%M%/%?$r;}$D%D%$%9%H%Z%"%1!<%V%k(B
(2 $B$D$N7k@~$OEE8;6!5k(B)$B$r;H$C$F(B 12M $B%S%C%H(B/$BIC$NB.EY$GDL?.$G$-$^$9!#(B
$B$?$@$7:GD9(B 5 $B%a!<%H%k(B($B$3$N?t;z$O9=@.$K$h$C$FJQ2=$7$^$9(B)$B$H$$$&C;$$5wN%(B
$B$G$7$+@\B3$G$-$^$;$s!#(B</P>
<P>USB $B$r@bL@$9$k$K$OJL$N(B HOWTO $BJ8=q$,I,MW$G$9!#(BLinux $B$G(B USB $B$r%5%]!<%H$9(B
$B$k$?$a$N:n6H$O8=:_?J9TCf$G$9(B($B$?$@$7(B HOWTO $BJ8=q$O$^$@$"$j$^$;$s(B)$B!#(BUSB
$B$OF14|DL?.$r9T$$!"%M%C%H%o!<%/$HF1MM$KFC<l$J%Q%1%C%H$r;H$C$FAw?.$r9T$$(B
$B$^$9!#$A$g$&$I%M%C%H%o!<%/$HF1$8$h$&$K!"(BUSB $B$K$OJ#?t$N%G%P%$%9$r@\B3$9(B
$B$k$3$H$,$G$-$^$9!#(BUSB $B>e$N3F%G%P%$%9$K$O!"GSB>E*$J;HMQ$r9T$&$?$a$NC;$$(B
$B;~4V$N%?%$%`%9%i%$%9$,M?$($i$l$^$9!#%G%P%$%9$O!"%P%9$r8GDj$N;~4V4V3V$G(B
$B;HMQ$G$-$k$3$H$,J]>Z$5$l$^$9!#B>$N%G%P%$%9$,(B USB $B%P%9$r;H$*$&$H$7$J$1(B
$B$l$P!"(B1 $B$D$N%G%P%$%9$,(B USB $B%P%9$rFH@j$9$k$3$H$,$G$-$^$9!#(BUSB $B$r>\$7$/(B
$B@bL@$9$k$3$H$OMF0W$G$O$"$j$^$;$s!#(B</P>
<H2><A NAME="sync"></A> <A NAME="ss18.7">18.7</A> <A HREF="Serial-HOWTO.html#toc18.7">$BF14|DL?.$HF14|@-(B </A>
</H2>
<P> EIA-232 $B$NHsF14|DL?.(B($B$J$I(B)$B$NB>$K!"F14|%7%j%"%k%]!<%HDL?.$N5,3J$,(B
$B$?$/$5$s$"$j$^$9!#<B:]$O(B EIA-232 $B$KF14|DL?.$N;EMM$,$"$j$^$9$,!"$3$l$O(B
$BIaDL$O(B PC $B$N%7%j%"%k%]!<%H$K$OIU$$$F$$$^$;$s!#$7$+$7$^$:$OF14|DL?.$,$I(B
$B$&$$$&$b$N$+$r@bL@$7$^$7$g$&!#(B</P>
<H3>$BHsF14|$HF14|$NDj5A(B</H3>
<P> $BHsF14|(B(async, asynchronous)$B$H$O!VF14|E*$G$J$$!W$H$$$&0UL#$G$9!#(B
$B<B:]$K$OHsF14|?.9f$O!"HsF14|%7%j%"%k%]!<%H$,Aw<u?.$9$k%G!<%?$G$"$j!"%9(B
$B%?!<%H%S%C%H$H%9%H%C%W%S%C%H$K$h$C$FHO0O$,Dj$a$i$l$?%P%$%HNs$N%9%H%j!<(B
$B%`$G$9!#F14|(B(sync)$B$H$O!"HsF14|$G$J$$$b$N$[$H$s$IA4$F$G$9!#$G$9$,!"$3$l(B
$B$G$O4pK\E*$J35G0$N@bL@$K$J$j$^$;$s$M!#(B</P>
<P>$BM}O@E*$K$O!"F14|DL?.$H$O0lDj$NB.EY$G%/%m%C%/?.9f$N9o$_$K9g$o$;$F%P%$(B
$B%HNs$,=g$KAw$i$l$k$3$H$G$9!#%/%m%C%/?.9f$rAw$k$?$a$NG[@~$d%A%c%s%M%k$,(B
$BJL$K$J$C$F$$$k$3$H$b$h$/$"$j$^$9!#HsF14|DL?.$N>l9g$K$O!"%P%$%H%G!<%?$N(B
$B4V$N;~4V$,(B($B%-!<%\!<%I$GJ8;z$rBG$A$3$`>l9g$N$h$&$K(B)$BIT5,B'$KJQ2=$7$F$bAw(B
$B?.$,$G$-$^$9!#(B</P>
<P>$BF14|DL?.$"$k$$$OHsF14|DL?.$N$I$A$i$+$X$NJ,N`$,I,MW$H$J$k>l9g$,$"$j$^$9!#(B
$BHsF14|%7%j%"%k%]!<%H$G$b!"B?$/$N>l9g$O0lDjB.EY$N%9%H%j!<%`$rAw$j$^$9!#(B
$B$3$l$OF14|DL?.$N$h$&$K;W$o$l$k$+$b$7$l$^$;$s$,!"$=$l$G$b%9%?!<%H%S%C%H(B
$B$d%9%H%C%W%S%C%H$,$"$k$N$G(B($B$3$l$K$h$j%G!<%?$rIT5,B'$JB.EY$GAw?.$G$-$^(B
$B$9(B)$BHsF14|DL?.$H8F$P$l$^$9!#JL$N>l9g$H$7$F$O!"(B($B%9%?!<%H%S%C%H$d%9%H%C%W(B
$B%S%C%H$r4^$^$J$$(B)$B%P%$%H%G!<%?$,!"IT5,B'$J%Q%1%C%H4V3V$r;}$D$3$H$,$"$k(B
$B%Q%1%C%H$KF~$l$i$l$k$3$H$,$"$j$^$9!#$3$l$OF14|DL?.$G$9!#$H$$$&$N$b!"3F(B
$B%Q%1%C%H$KF~$C$F$$$k%P%$%HNs$OF14|$5$;$FAw?.$7$J$1$l$P$J$i$J$$$+$i$G$9!#(B</P>
<H3>$BF14|DL?.(B</H3>
<P>$BFI<T$N3'$5$s$O!"%7%j%"%k%]!<%HMQ$N(B 25 $B%T%s%3%M%/%?$NL$;HMQ$N%T%s$,(B
$B0lBN2?$J$N$+$r5?Ld$K;W$C$?$3$H$O$J$$$G$7$g$&$+(B? $BL$;HMQ$N%T%s$N$[$H$s$I(B
$B$OF14|DL?.MQ$J$N$G$9$,!"F14|DL?.$r(B PC $B$G9T$&$3$H$OLGB?$K$"$j$^$;$s!#(B
$BF14|%?%$%_%s%0?.9f$dF14|H?E>%A%c%M%k$N$?$a$N%T%s$,$"$j$^$9!#(B
EIA-232 $B$N;EMM$K$OF14|DL?.$HHsF14|DL?.$NN>J}$,Dj5A$5$l$F$$$^$9$,!"(BPC
$B$O(B 16450, 16550A, 16650 $BEy$N(B UART (Universal Asynchronous Receiver/Transmitter)
$B%A%C%W$r;H$C$F$*$j!"F14|DL?.$r07$($^$;$s!#(B
$BF14|DL?.$r9T$&$K$O(B USART $B%A%C%W$"$k$$$O$=$l$HF1Ey$N%A%C%W$r;H$&I,MW$,(B
$B$"$j$^$9!#(B
USART $B$N(B S $B$OF14|(B(synchronous)$B$rI=$7$F$$$^$9!#(B
$BF14|DL?.$O$9$-$^;T>l$J$N$G!"F14|%7%j%"%k%]!<%H$OB?$/$N>l9g$+$J$j9b$/$D(B
$B$-$^$9!#(B</P>
<P>EIA-232 $B$NF14|$K4X$9$kItJ,$NB>$K$b!"(BEIA $B$K$OF14|$K4X$9$k5,3J$,?'!9$"$j(B
$B$^$9!#(BEIA-232 $B$G$O!"%3%M%/%?$N(B 3 $B$D$N%T%s$,%/%m%C%/(B($B$"$k$$$O%?%$%_%s%0(B)
$B?.9f$N$?$a$KM=Ls$5$l$F$$$^$9!#(B
$B$^$?!"$H$-$K$O%b%G%`$,2?$i$+$N%?%$%_%s%0?.9f$r@8@.$7!"F14|%b%G%`(B
($B$"$k$$$OF1$8$/%?%$%_%s%0?.9f$r@8@.$9$k!VF14|%b%G%`%(%j%_%M!<%?!W(B)
$B$J$7$K$OF14|DL?.$,$G$-$J$$$h$&$K$9$k$3$H$b$"$j$^$9!#(B</P>
<P>$B%7%j%"%k%]!<%H$,F14|BP1~$G$"$k$3$H$O$[$H$s$I$J$$$N$G$9$,!"(B
V.42 $B%(%i!<D{@5$r;H$&%b%G%`$rMQ$$$?!"EEOC2s@~>e$G$NF14|DL?.$O$h$/9T$o(B
$B$l$^$9!#$3$N%(%i!<D{@5$O%9%?!<%H%S%C%H$H%9%H%C%W%S%C%H$r<h$j=|$-!"%Q%1%C(B
$B%HCf$KF|IU%P%$%H$rF~$l$k$b$N$G!"$=$N7k2L$H$7$FEEOC2s@~>e$GF14|A`:n$r<B(B
$B8=$7$^$9!#(B</P>
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