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”%52” < /" ”()”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”%52” < /" ”()” !16"6% !! ! D " , OGHP F ..F 2'F 2F .'F . F 3.(/5 3%5FA5 ((3;+*((<+12 5+! %& = #"!$ ., %&F = #"$ . 0%&%&F = #! 1', %,1', %& " + = #! 1' +"!+ 2'F1'! " + . ! 0%&%&'F = #3>1' , >1' , %& " + = #3>1' +"!+ .'F1' ! " + 1/0). '5'0 = #! 13.(/5, %,13.(/5, 1/0). '5'0 = #! 13%5FA5, %,13%5FA5, #$% " !" &'( ) 2,- &7 !" !*!+ !" #$ !" ,- !*!+ !" 34!#$% !+#$5 #$6% " ' !" #$% " &'1 !" 2,!#$% +#$% +" ./ % 2,1 8/% 4" ,15 !" 0/ !,1 !*!+ !" #$ ,- !*!+ & 9 !" *- *C + *- L! '()**-*-2! 6! + *C L! *C3*C2! "*C2! 6! 5212((3;+* %" " + ! /0).!!! 1 * + ! 6 A)*E " * + + ! , "! '#%)5% '# )5 '#)5 (( ((* ! $ $ !2 $ $ ),. $ B *. $ $ - ('/ $ $ C 8 ! ((3;+*((<+12 M %" " !6 !,+ N /" ”%52” < /" ”()”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ower On Out(ALL) = Idle START Datain(ANY) = Act. & Collin(ALL) = /SQE :[N <- Port ( Datain = Act. )] BEGIN UCT Collin(ANY) = SQE :[ N <- Port ( Collin = SQE ) SEND PREAMBLE PATTERN Out(ALLXN) = Preamble Pattern Collin(N) = SQE + ( Datain(N) = Idle & Collin(ALL) = /SQE ) Collin(ANYXN) = SQE TT(ALLXN) >= 62 & DataRdy & Collin(ALL) = /SQE & Datain(N) = Act. SEND TWO ONES Out(ALLXN) = TwoOnes Collin(N) = SQE + ( Datain(N) = Idle & Collin(ALL) = /SQE ) Collin(ANYXN) = SQE TwoOnes Sent & Collin(ALL) = /SQE & Datain(N) = Act. SEND DATA Out(ALLXN) = Data Collin(N) = SQE + ( Datain(N) = Idle & Collin(ALL) = /SQE & AllDataSent & TT(ANYXN) < 96 ) Collin(ANYXN) = SQE RECEIVE COLLISION Datain(N) = Idle & Collin(ALL) = /SQE & TT(ALLXN) >= 96 & AllDataSent TRANSMIT COLLISION Out(ALLXN) = Jam Collin(ANYXN) = SQE Out(ALL) = Jam Collin(ALL) = /SQE & TT(ALL) >= 96 & Tw2Done Collin(ONLY1) = SQE & TT(ALL) >= 96 :[ M <- Port ( Collin = SQE ) ] Datain(N) = Idle & Collin(ALL) = /SQE & TT(ALLXN) >= 96 & Tw2Done ONE PORT LEFT Out(ALLXM) = Jam Collin(ANYXM) = SQE Datain(M) = Idle & Collin(ALL) = /SQE & Tw2Done WAIT StartTw1 Out(ALL) = Idle Collin(ANY) = SQE + Tw1Done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• • • • • • 1/0).+ /0). L "# '5! ,! '0! 6" 2* ).=.(//(5! *)%50*.(//(5! 2%8/(&*'&*4++ * " + + !+ + " ! 7! /0)." ! /0). 1/0). !" # .!7!/0). !, " /0).)," " &:" " 1/0).+ * !!'()*5!'()*0 • 5#/0). '()*5'()*0+ !!+%.@(" +" %.@ " 5% + * !! ! ! ! /0). !+!$C (" 1/0).+ .!7!/0). ! * !! !!!/0).!+! $ C !, " $C /0).)," " 5 + )& * " ! ,'()*0 .!7!/0). !, " %/0).'()*5'()*0 • 5#% " " " " ,!!1() " * " !+ /0). /0).)," " )&>' .!7!/0). !, " /0).)," " * " ! '()*5'()*0 6" %/0). +,! 5#* + !!1(8" * " !+ /0). )" 2'()*5'()*06" .!7!/0). !, " /0).)," " %/0).'()*5'()*0 * " !+ /0). )-# .!7!/0). !, " /0).)," " * " , " " ). ! )2 " %/0).'()*5 * " !+ /0). )-3 .!7!/0). !, " /0).)," " 2!! !5)E,! " !'()*5 %/0).'()*5 * " !+ /0). )- . " ! )2!) .!7!/0). !, " /0).)," " %/0).'()*5 * " !+ /0). 6(.#6-; ! + ! 1/0). '()* 5 ! '()* 0 ! + ! /0). * '$+ , /0).'3%.@ * + + 3%.@( " /0).'()*5!! + , ,'()*5!! 2/ ! + ! + ! 3%.@ " " " 1/0). ! " + +/0).# * !" !6! + +!1 " 3%.@13%.@(" +/0). /0). ! 3%.@ ! " 3%.@( " /0).! 3%.@ 6/0).!* " + " ! " + ,+ ! +! " /0). +! ,! 3%.@1 3%.@( ++! * ! !'()*5'()*0!,! + * ! 7 6 + /0).'3%.@( " ! ! /0). " /0)."! , ( !!" " + /0).+! + + ; /0). 6 , , ! 2/ /0).+! 3%.@(6 + "!, !+++! /0)."'()*5 + !!%! !! *)%50*.(//(5! '()* 0 * + +4 + ! + "+! + * "! " + , , , ! + !'%/D%/!, *'()*5'()*0++ +, ! " #3%.@3%.@(!3%.*5 * 1/0). + 1/0). + ! 6 " /0). * !+ 1/0). + ! + % #'&6/#"/&:##/#--"#&-" 2) * !, 1/0).8! !,!!! " * + ! '()* 5 ! , 1/0). + + " ,!" !* ! ' ! 6 2/ 52 ')%08/'%**)5).=.(//(5 * +" + !,! /0).' 43+ " * ! ,! '()* 5 !! " , 6 '//!!( + ,! !!!! 5)E ! !+ " !)23)! ). 1/0). + * ! ,! + + /0). !!! 8/" !! 2 2 ; +!!! !! + * + + ! ! ,+ ! " $$ /0). % ! 8 !1 ! " /0). % ! %,!8$/0).8! !+ "$ "!" ! + " " $$ 6 +, ! /0).' + + +," 1/0).+ ' !!+ * '()* 5 * " !+ ! 1/0). + "$ % (NOTE1*) RX A1 CD (HIGH) A1 TX A1 /ACKO (HIGH) A /ACKIB RX B1 CD (HIGH) B1 TX (HIGH) B1 /ACKO B /ACTN /ANYXN (HIGH) /COLN (HIGH) /IRE IRD IRC PORT ARB' INTER-LEMRIC BUS STATES REPEATER REPEAT IDLE IDLE SEND PREAMBLE SEND SFD IDLE SEND W AIT IDLE STATES PORT N XX PORT B1 NOTE 1:The activity shown on RX represents the transmitted signal on TX A1 after being looped back by the attached XX . A1 % * ! , + ! " ,! + 8$ * /0). ! "+ "!" 3%.@13%.@(! ! 3%.*5+" "!! ! , 52')%08/* /0). L ! + ; +" /0). )'%** 6! 7 52')%08/522!522%*% !+ ,+ 1/0).+* "!" " )'%* * ;%*!2/ +!1/0). +2/ ( +" , 2/7! C+!43+ " ! ,! " '()* 5 C + ).=.(//(5!+! * + , " 6 % ! + ! !" " " /0).' + /0). *$ , * !!" ;%* !" #'&6/#"/&:##/#--"#&-" ),. %, " !'()*5 ”,!” !,!! ! " 5 " , " 7! !# % + ! ! '()* 5 ! + 34 !+ ' ; '()*5! " 3.(/5 1/0). + " ! * /0). + 34 " * + ! 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" + % %8 , 8$!! 3%5FA56+ 006 * +!!!3%5FA5, , (5'()*/** /0). , '()* 0 " ," * ! , ! 4 !+! !+3%5FA5* 3.(/5 ).=.(//(5 ! ! ,,'()*0+!* *$, ;%* +! 8 #'&6/#"/&:##/#--"#&-" 9++' % 7! !+ , " 4++ * !!+ '** !+ !!!+ *B ! "$ 4++ " /0).+! * 9%88) ')(*.* ! 52 2%*% ; *B !+,! 1/0).+! 2/ !" , , !" ! * *B7 +! !" # $%&%$'%() *("'+ ','-- .#. $*' ) &%( )%(%*/'%(*' )%'0.'/1"%*- "'+%.%*) &%( )%('('))%%('2'-- .$3 4#. $%(*' )%'0.'/5 % /+(72,.( * /0). " + !! !!+! + # $ * ", ,! """ &#-<#=-" * /0)."# $ (,%&+ ,+6'$ *!+ , * ! ! + /0). ' $ %& * , + '* /0)., !" ! " 7! $8%1* " * !! , 6 !, " * /0). $8%1*" "$B* !" 7! /0).'$8%1*"! ! '35 !,!* 4 "! 11 ! !+ * $8%1* ,' " + !! + ! * ! ! , !6 * +!! A**B !! ! !! + ! * ' , + * ! ! ! , !! ""A**B * 1 $8%1* , ! ! ,!!* ! ,! ! ! , ' ! ! + !+ " A** !!++ !! ! ! , ! ! ""A** " 6 , ! ! ! 0! % & " $- +!6 ," %& % ! ! """"""""" # " "$ %# " &# "" & ' ' ' () !"#$%& ! % # " ! # "! " $% * ## $% # ## $% # & ' ( + ) ) # $%&'( = "=.. B?-= --= 2., "=5 1-= =..<-= 2.(= "=(&* 1-= =..<-= %+*&!8 . ?. 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”( ' /” , 5#C+9%0 , !+"! 5*)1/0).8&(&*'&**05D 6? =( $- 0*12 *1+ /+*(+ 6 6? =( *$$ ).(I" * B C *$ ).(/* B C *$ ).(. * $ *$- 3%.*5(/3)(/ $ *$C )2(/).%, B !, *$? )2(, !). $ ! *$ )2(+ = !* *$ ).(I" 3)I" - C- *$$ 5+).3)I" - - 5*)1/0).8&5'&**05D 0*12 *1+ /+*(+ 6 6? =( *$$$ ).I" * *$$ )./* ! *$$B )2). $ ! *$$- )2I !). $ *$$C ).I" 3).I" - ?- 8 ), - !+4 " *0, " "! * ! *0 "!" ! , + " ! *0 !, 5(* !"! !! L! ! + + /1"