47page

^ll 3 = CAD/CAI\4 Al '-'J el "- r' = 9ll0l 39 - Tx(qlolEl+tl): qlolrlE -HLll- tlEd, =qg d*olri' - Rx(rllolEl+^l) : rllolEl= += tlEd, "Jqg CS"lu|. - RTS(+tl.q+) ; r.llolrl +dg -q+6'l7l 9-J 'Zflqd"lr+' - crs(+tl6l7I) : RrSql ql+ +B tlEdol4. - DSR : z)zl! cgol oN"Jzlg "l++ ,J+ z)zl4 =HltlEll= a^I6Jr+. - DTR : r,ll ol E] rl uJ r-f ol DSRI+ u|{z}xl E- OKql7}= =^}+r+. -fr _ 1 _ 4 gEJrl 2SEJsl 7lZ es HA ,5 rl HA tlsH ,rl El = .o oJ6J I 8 DCD(Data Carrier detect) rll ol r] iI .-J+tl z\444 A in 2 -| J RX(Receive Data) +tl u.llolrl in J 2 TX(Transmit Data) +tl qlol El out 4 20 DTR(Data terminal readY) E"J*Z] =HI out 5 7 GND(Signal ground) Cs+ dzl,ol: 6 6 DSR(Data Set ReadY) +tl=ul $-+ ln l 4 RTS(Request to Send) +d-q+ out 8 5 CTS(Clear to Send) f tlzIts in 9 22 RI(Ring Indicator) rlE= g.^l 1n xl e*9 a +ql= +zlql a B 9= r-2ol+ ,Jsq *izl *^l e*z]4 €E izl * 7l ulEl = ^i+6}tr €r+. e€ ?5lrl TX RX RTS CTS GSR GND DCD DTR RI J 2 7 8 6 5 1 4 9 2 3 4 5 6 7 8 20 22 O r /--,O o ---x...=-- o O+ . --+ O ll O- _ l | - o 2s-g eg 2 J 4 5 6 7 8 20 22 J 2 7 8 6 5 I 4 9 TX RX RTS CTS GSR GND DCD DTR RI o o o o o o o o o o r4 120 gEJ, 2sEJel 3C 'JE=