United States Patent r191
`Maxwell et al.
`
`[11] Patent Number:
`[45] Date of Patent:
`
`4,924,456
`May 8, 1990
`
`[54)
`[75]
`
`fflGH SPEED MODEM
`Inventors: Ronald K. Maxwell, Palo Alto; Karl
`J. Zorzi, Pleasanton; Harunori
`Yoshikawa, Cupertino; Venkat S.
`Prasad, San Jose, all of Calif.; Fred G.
`Smith, Longwood, Fla.; Ming-Chih
`Hsieh, San Jose, Calif.
`[73) Assignee: Racal Data Communications, Inc.,
`Sunrise, Fla.
`[21] Appl. No.: 197,128
`Aug. 29, 1988
`[22] FIied:
`
`Related U.S. Application Data
`[62] Division of Ser. No. 909,012, Sep. 18, 1986, Pat. No.
`4,771,417.
`Int. Cl.5 .............................................. H04J 15/00
`[51)
`[52) U.S. Cl ......................................... ~70/32; 370/64;
`375/8
`[58] Field of Search .................. 370/31, 32, 35, 110.1,
`370/68.1, 24, 29, 84; 375/8, 7
`References Cited
`U.S. PATENT DOCUMENTS
`3,956,589 S/1976 Weathers et al ....................•. 370/35
`3,990,046 11/1976 Katz et al ............................... 375/8
`
`[56]
`
`4,425,664 1/1984 Sherman et al ......................... 375/8
`4,756,007 7 /1988 Qureshi et al. ........................ 370/84
`4,780,883 10/1988 O'Connor et al ....................... 375/7
`FOREIGN PATENT DOCUMENTS
`2402356 4/1979 France .................................. 370/31
`
`Primary Examiner-Joseph A. Orsino
`..Assistant Examiner-Frank M. Scutch, III
`Attorney, Agent, or Firm-Arnold, White & Durkee
`ABSTRACT
`[57]
`A modem is disclosed having a data transmission proto(cid:173)
`col involving lower-speed, full-duplex operation during
`the connect sequence with a remote modem and an
`automatic switch to higher-speed, half-duplex operation
`for data transfer. Further, the modem data transmission
`involves transparently changing between lower-speed,
`interactive operation and higher-speed operation based
`upon data transmission demands. The operation is con(cid:173)
`trolled by a processor monitoring the contents of a
`transmit data buffer and providing a mode control com(cid:173)
`mand to the modem transmitter. The modem also
`adapts its speed to the quality of the telephone line by
`Callback or fallforward to a different speed based upon
`predetermined data frame retransmission criteria.
`
`6 Claims, 69 Drawing Sheets
`
`
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 1 of 81
`
`

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`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 2 of 81
`
`

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`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 3 of 81
`
`

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`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 4 of 81
`
`

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`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 5 of 81
`
`

`

`U.S. Patent
`
`May 8, 1990
`
`Sheet 5 of 69
`
`4,924,456
`
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`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 6 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 6 of 69
`
`4,924,456
`
`TMI
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`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 7 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 7 of 69
`
`4,924,456
`
`II
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`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 8 of 81
`
`

`

`+SY
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`1
`lA
`I.
`6 lAZ
`8 1A3
`11 1A4
`2A1
`13 2A2
`15 2A3
`17
`1 2AI.
`
`AO 30
`A
`31
`1
`32
`A 2
`33
`A3
`Al. 31.
`AS 35
`A6 36
`D
`A7 16
`
`•11/,11
`
`r--.:-;-;--;:-:--;-vv,..,- +SY
`
`1
`l'"I.
`
`l..7K 1/1.W
`
`-
`
`U.S. Patent May 8, 1990
`
`Sheet 8 of 69
`
`4,924,456
`
`+SY
`111
`
`6
`CLK
`
`+SY
`
`R72
`27K
`1/4W ...J1 NMI
`~WAIT
`--12 BUS REQ
`
`M33
`2808
`
`+SY
`j2Q
`YCC
`
`Bl 18 BOO
`17 801
`82
`16 802
`83
`15 803
`91. 11. 801.
`85 13 805
`86
`12 806
`87 11 807
`sai-:-:--=aa..:...._,
`
`M42
`._HC21.5
`
`GND
`
`+SY-{:t-e-+-+_.,..._........,
`RNS,,,-, ... r - - - - - - - - 7
`~
`_j
`27K
`I ~II .II ,11 ,117
`1-4------+-+-+--+-+--+--+--i--=2 A1
`DO i-c
`3 A2
`01 15
`02 12
`I. A3
`03 8
`S Al.
`DI. 7
`6 AS
`05 fo
`7
`A6
`8 A7
`06
`13
`2-'~3'-----.....,__-""'l DIR
`,..
`D7F--_::_-_-_-_::_::::::J"r::::::--=---l--+,9
`-------4'J;. ,'--~~
`19 G
`..--------'~--<~ M36
`LS08
`+ 5Y-{~--------(cid:173)
`RN10 -, .. {· - -
`- -
`-
`- - -:
`27K
`L _______ _J
`
`1Y1 18 BAO
`1Y2 16 BA1
`11. BA2
`lY3 12 BAl
`WI. 9 BAI.
`2Y1 7 BAS
`2Y2 5 BA6
`2Y3 3 BA7
`2Y t. l-"---='-'--------
`MRlr6 19".......,R131 •rY [•~Y R714.71<,1/I.W _Qt ~~
`i---,_, M 23
`IORQ ~ R6s•5~ r~ ... _____ ..., ~ ______ G..,N..,.D_.
`HC21.4
`1 RN3 +SY ¼ '.0
`WR ~-d-~\,---J
`lzo
`i:;rr lL R69 .s7v .... _ _ _ ... _ _ _ ..J 2'7K
`-Y~oc~--
`~21
`AB 38
`2 1A1
`1Y1 i-:-1168=--=BAB::...:A=98 _____ _
`A9 39
`I. 1A2
`1Y2H-':'-~:;<,,------
`A'O 1.0
`68 1A3
`11. BA10
`,,
`1
`1Y3H12.,......;;BA~11'-------
`A11
`11 1AI.
`1Yt.1-:9:=--:BA;:,.,.:.;.,12=-------
`A12 2
`13 2A1
`2Y1i-:;7...-=B;;...cAc:.::13'-------
`A13 3
`lS 2A2
`2Y21-:5,-;;8;::,.A?:ll.----'-----
`2Y3i-..3,.....:;;0~ , .1,c;~-----
`A14
`17 2A3
`I.
`A15 6
`2Yt.~--=>LL------
`2A4
`GND RST
`i.-,_., M 1.1
`---.......;.;~.............
`._G_2 __ G...,N_Da..i
`29J
`26
`HC21.4
`~.10
`RST - - - - - - - - - - - - - - - - - - - - - - - -
`M15
`_________ ___.
`R66
`~+SY
`..,_M_I _____ _..I ........... 21_K,1I_i1._w_---=--3
`IORQ
`
`ftl G1
`
`LS04
`1.
`
`.__R_D _________ -=-.5
`
`M15
`6
`LSOI.
`
`M51
`I. ( LSOB
`'\6
`
`~s1\t)
`1/1.W
`( 3
`2] ~ - - - - - - - - - - - - - - '
`-----------......::01-/
`
`+5Yl ~r
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 9 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 9 of 69
`
`4,924,456
`
`(4,5,6)
`
`(4,5,6)
`
`(/,)
`(/,)
`(/,)
`
`(6)
`
`(/,)
`(/,)
`(6)
`(/,)
`
`(6)
`
`(4)
`
`10 AO
`M26
`9
`Al 27C256
`8
`A2
`7 A3
`6 Al.
`5 AS
`I,
`3 AG
`25 A7
`24 A8
`21 A9
`AlO
`23 All
`2 A12
`vcc
`~ CE
`GND 14
`OEA13 All.
`221 261 2?
`BA13
`
`11
`00
`01 12
`02 n
`15
`03 Jf;
`04
`17
`05 18
`06
`07 19
`VPP id
`1
`
`+5V
`
`-::"
`
`RD
`
`16j5V
`15
`, Avcc
`8A13
`YO
`14
`Yl
`8A14 2
`13
`8 Ml.9
`Y2
`12
`8A15 3 c
`l5138 Y3
`11
`+5V
`YI.
`L...2
`10
`YS
`Y6 9
`t,
`u
`,..LNC
`Y7
`GND
`~8
`
`MREQ
`
`G1
`G2A
`G28
`
`+5V
`116
`BAS 1 A VCC
`BAG 2 B
`8A7 3 C
`
`M22
`LS138
`
`+5V
`L.§_ G1
`I,
`'""5" G2A
`r-=< G28
`
`15
`YO
`14
`Yl
`13
`Y2
`>RNC
`Y3
`yt, ~NC
`Y5
`NC
`Y6 ~NC
`Y7 ,_LNC
`
`GND
`-t~
`
`I
`
`BAI.
`BAS
`BAG
`8A7
`BAS
`8A9
`8A10
`8A11
`BA12
`WR
`WR
`RD
`RD
`RST
`iNT
`IORQ
`Mi
`' - - - - - - - - - - - - - - - - - - - - - . . . ,D RDATA
`
`I
`
`I
`
`I
`
`BOO
`l 00~
`BOO
`BD1
`I a£ ,
`8D1
`802
`802
`~ )
`803
`Loo5
`803
`4&;p
`804
`804
`8D5
`LaEj
`805
`806
`YkD
`806
`~6 807
`8D7
`
`Flq.6 C
`
`1 M55
`2 - 6
`'\'
`I,
`
`S --<LS21
`
`+SV
`
`R130
`
`27K
`1/1.W
`
`CSI.
`CS5
`CS6
`
`SWRST
`
`--..,;,
`
`- ----=
`
`LCSO
`LCS1
`LCS2
`-
`BAO
`Lag [)
`RSO
`8A1
`Lagz5
`RS1
`BA2
`L@
`RS2
`BA3
`4l9ID
`RS3
`
`;::: ---,_;, ----
`
`~
`~ -
`~ ---
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 10 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 10 of 69
`
`4,924,456
`
`,~--_J-1--_ -+-+ -_ -_ -+-1--_ -_ -i_J-_ =-..... -_ -_ -_ -_ -_-_ -_ -_ -_ -_ -_ -_ -_ -_ -_ ...,,_;-_ -_ -_ -_ -_ -_ -_-_ -_ -_ -_ -_ -_ -_ -_
`
`1489
`
`1
`
`i
`
`10
`1 I 1 l, i---:J..
`.J..Q AONC GNDooJ.L
`2 xAz 15
`1 Y
`D1 JL
`..._2A1
`.._a A2
`D2 J.L
`M2L.
`D3 &
`._]_ A3
`L.053
`.......§. A4
`DL. J§_
`'---~ --2 AS ~ DS JL
`......i! A6
`'
`06 clli__
`....J.A7~~ 07JL
`J-2 A8 ::EID
`~ A9 ~
`...1J A10 ~
`~ A11
`--£A12
`_,._J.Q, CE-
`WR
`271WR
`
`+5V
`
`24
`.....§. AOVDD
`~ 7 Al
`DA2
`.__a A3
`....__J_ Al,
`...,.
`._]_A5
`~AG <-nCL
`23 A7 i~
`--= AS
`ID
`._n.A9
`::E
`~A10 :::c:
`
`9
`DO lO
`0111
`D2 'i3
`0314
`04 15
`D5 .--
`06 ,1.§_
`07 JL
`
`~ CE
`VD0~
`GNDn.
`6
`CE2lf§f
`R/W OE
`•
`OE
`i22RD
`21 WR
`20RD
`,,...--ML.O
`l-----;---.74HC74
`1,
`l.r---::L
`.JQ AONC GNDDO JL.
`Ll.
`~D--.c...,Q 5
`.---
`3
`01 J1_ - , CLK
`.._9. A1
`1-"-+-+-_-
`J. A2
`02 J.L
`-f:- CLR
`a..§.
`.....J.. A3
`03 J2_
`..::C PRy55
`._§ AL.
`D4 J§_
`.p ..---4....+--+-~
`05 ~
`....2 AS
`.....!J.. A6 ~ D6 ili?._
`R101
`...J. A7 - a. D7 Ji_
`L..7K,1/4W
`.11 Aai;:t;
`-
`-•SV
`..1.f. A9 ~
`.5y'-+-----1--+--,H-1-+++1-
`..1! A10 ~ ~
`~ A11
`VDD
`6
`....1 A12
`CE2
`~ CE-
`OE
`WR
`27foffi p2R5
`
`M51
`7L.LS08)
`I
`
`,.
`,..
`
`. CR1S
`
`INL.148
`
`=-
`
`-
`
`R30,,...
`
`f1~
`'----1-'1-=-2,........_ 11
`1--<:
`'---t-:-:'-
`3
`CR10,~;
`M14
`S.6V
`.,,. LS38
`IN7S:sv
`R33
`OK.1/L.W
`
`C27
`3~3,1SV
`t,TANT
`1
`♦ f-J...
`.,.
`
`9 ~
`
`::.e>-----1----1----
`(6) DLBC
`(6) V29/FDX...... ~ M30
`3
`R99
`1
`TXD J3-2
`-
`(3) BAO -
`220, 1/L.W
`8A1 D--
`CR27Y~ ML.7
`BA2 D--
`R 100 ~tJ 1 f'..._2
`BA3 D--
`1K,1/L.W '-- rv-
`BAL. D--
`:~ ~ •5y_ HCOL.
`BA7 C>--
`ML. 7
`ML.7
`BAB D--
`5 f'..._6 .. l3f'-....._l.
`r-v-- --V--
`BA9 D -
`BA10 D -
`HCOL.
`HCOL.
`_,,,--"°R6L.
`BA11 D--
`BA12 D--
`1.0M, 1/L.W
`RD D--..
`5.5296M~CG9
`~0
`WR D--
`33pf,63V
`RST D-
`Y2
`5¾ CER
`-
`.Pcgo
`:Pc6~
`INT D-
`IORQ D-
`33pf,63V
`27pf,63V
`Ml D-
`S¼,CER
`S%,CER
`BDO _1~-◄
`8D1 =e>-+-◄ 81
`l~~f~3 R31
`802 =.o>-1--◄ 3.QV\
`\
`(330,1/L.W
`\ 1 \__,
`803 _e>-+-◄
`, ,,_._.......__.. ~11:
`:;.
`804
`......
`C83 7.11
`BOS -
`•12V.,,.
`(3) ~g~ -
`. l, SOY
`CR11
`lrR3L.
`IN6263\ 20%,CER
`-:- '--330, 1/L.W
`·-· 1
`CR13
`: fl~)
`INL.148 f7
`f.t2
`. ~ L
`K
`1/4W _ 03
`~ 2N39Ql,
`CR1L..l
`1N270
`A ,
`r-r1---_
`_
`r.:y-'
`10 M14
`~~: ~:~LK ~ W-
`lw_;--
`LS38
`(L.l css
`-L>------------:::::==::t:=--------...1.WI
`'---iJ::---
`(3) R~TA
`::.
`(3) CSL. =
`M51 \
`7L.LS08
`
`-
`(3) LCSO
`(3) LCS1
`(6) CLSEL1 =.r>------------1-~------
`{ 6) CLSEL2 _
`12
`lA,l,
`JS-13
`=
`
`DCLK
`(5) SCT
`
`(5) SCR
`
`----------+-+-+----:-16 COB
`1
`S C1
`I ----'1_ C2
`,.__.__l'"""O 2CO
`o-=----------+--+---1---;1~1 2CI
`y
`!H
`2C2
`
`(5) ,uPSCT : :_ ,> - - - - - - - - - - - - '
`
`(51 ..uPSCR
`
`...... L>---------------'
`
`2C3
`137
`---C:1-,,154
`(5) BBCLK _ , : : , . . - - - - - - - - - - - - - ' - - - - -
`HC153
`------------------
`( 6} INH CLK L . .> - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
`(6) REF
`
`+5V
`I._ I
`VCC Ll.§.j
`I Y 7
`2Yi-:9' - - - - - - -_ . . . . - -
`
`rr==-
`
`GNDn
`.,,.
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 11 of 81
`
`

`

`4,924,456
`l...----------c::> SYS CLK (3)
`------------------.--+-----------t-C-J EIA TXD(3,5)
`.---------;-C-1...> RXLED
`
`U~S. Patent May 8, 1990
`
`Sheet 11 of 69
`
`I
`
`M24
`+5V
`..-----1~ C61
`·4053
`I
`390pt,100V
`,d-
`MSO
`.--2.....,,0.,..,..,......,9..,..,..-......,.
`9
`10¾,CER
`,1.~5-+-+---+---t---;5 xC ,~ -LF353
`-CLK +5V
`AO 34
`1
`Z"
`TXDA.-
`---=-lB/A
`.....AWJ CID
`J3-3 RXD
`-
`3 _
`RTSA .11Nc
`1---;::;32?<1RD
`1
`•
`EVIE
`- - 16
`\.. R63
`DTRA 4o
`IORQ
`36
`6 7
`1K 1/4W
`DO -
`1---=-;l:l~-
`s ML
`•
`= -12V ....__ _ ___,
`D 1 J__ M24
`D2 JL. 4053\
`,,_.=-=-5y:----"<IINT
`D3 jc .----+-~~+--t------+---DL..> SIOTXD ( 3)
`M53
`M36
`\
`11
`284428 D4 3
`DS n
`1
`12 J 11
`14
`12rc
`6
`l131◊ Zf
`}r--r------\ JS-20 RWTXD
`1131
`,....--11.......J ~
`D6 , - -
`,-..-.....,..,. IEI
`D7..!I..-
`ll SYNCA.
`~ CTSA wlRDYAJQ NC
`....+------=,....,.,
`LSOS
`+SY Ml6~
`19 DCDA WIRDYBJ.Q NC
`.i.'IT ~&A
`r--. RWCSO
`LSlSS;
`16I
`_TX_D_B ;~
`I ~ - -
`9
`1 yrr
`c--=13 - - DTRBt-----
`-:
`RTSB~ NC ~ DATA'"
`2Y0i,,1""0---+--~ JS-6 RWCSO
`'"27 RXCA
`R7---.
`I
`JS-~ RRWCSl
`2Y1
`(IC)
`15 DATA(2C) -~~5 ~NC
`r----+----+-='"="-i TXCB
`~lk:~r--
`'-
`27K
`r----t------it-::~=1~ ~~~~
`WCSl
`r-t----t-is/,,..-(/ =
`1/4W
`3
`+SV
`7J B
`---'-<I R::> 1
`31
`~102
`-----1-l-+-+--+!!2"!!'-!3 DCDB GNDn
`, ... 7K,1/4W
`F.14 STR(2G)
`12T ~ .,,.
`BAlO A
`I
`IT
`IEO
`I ( SY
`
`7
`lYO i>gNC
`NC
`1Y1 ~
`5
`1Y2
`1Y3
`l
`2 STR(1Gl GND
`J§
`M17
`--1------.,------+----+---+---t--i--H-' LS15 5)
`.,,.
`
`(6)
`
`(3)
`
`(3)
`
`+SV
`M14
`74LS38,
`/
`12
`
`11
`.)!-!-•
`1
`
`.1
`
`13
`
`f ... ~ .... Rf~-106
`
`r--
`
`12
`7
`6
`
`43
`11
`
`.____
`
`13
`IEI
`7
`TO -
`
`,
`
`M55
`
`~74LS21 JW
`
`-+ -
`
`I 15
`23 CLK
`22 TRGO
`..-= TRGl
`..l1 TRG2
`+SV fs +SY
`
`27K,1/4W(x4)
`16•1
`,_.,.,....~1-:'-<!5 DA(2C) vcc2YO t,;9a...---l-4o..+-+-+-£-c'-=> WRO
`(5)
`-c,.wfil
`(5)
`;~
` STR(2Gl 2Y1
`IWABR
`...., WITT
`(6)
`2Y2
`,._._,... A
`(6)
`WR3
`2Y3
`r-+------,'---!-'-A-"'9-+---=-i3 B
`_:=::.. RDO
`(3)
`1YO
`M15
`;::: ROT
`,......_ RD2
`1Y2 i
`(3)
`1Y1
`LS04
`~ 8 1 DA(lC)
`(3)
`~ 1Y3 b-'-NC
`2 STR(lG)
`RD
`GND
`..L 8
`-:
`
`r2LNc
`
`26 DO
`27 D1
`28 D2
`1 D3
`1 - - - -2'-1 D4
`3 DS Mt.8
`--""""t, DG
`Z8t.308
`...___-'-I D7
`1~7
`RST
`- -~
`___,_l.._. 2 INT
`..,__ _
`1------,-10~
`IORQ
`l l Ml
`' - - - -6"-<RD
`_sc...A-=--o --'1a'-+ cso
`......_,,8"-'A"-1 --"19;;.... CS l
`-4------"16"--l CE
`lQ_ TRG3
`IEO GND
`.l.?
`111
`.,,.
`NC
`
`M 46
`CBS
`74LS02
`_j / 330pt, 100V
`1
`- - - 2 '1 1 ·µ;>- 1 R6B
`10¾,CER
`/
`>----.....,,._ _ _ _ ./_.,..__--1 J3-15 SCT
`:=:J h
`3
`1 K , 1 /4W l..___, I - - - ,
`I ~ L
`•
`6 ~ -.>.;._7 ___..,R6,y2~-----:!:----4...
`J3-17 SCR
`5
`1K,1/4W
`•
`L~3t.f 3
`
`M43;3)
`LF353
`
`S -
`M46
`7L,LS02
`
`/1"'7
`
`C73
`330pf, 100V
`10%,CER
`
`Frq.713
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 12 of 81
`
`

`

`4,924,456
`U.S. Patent May 8, 1990
`Sheet 12 of 69
`TXA(RW) (T I ]D f - - - - - - - - - - - - - - - - - - - - - - - - (cid:173)
`a CR37
`+12V
`1 IN270
`
`M38 /
`4013
`
`;, 6 .BA
`
`C118
`) 82PF,63V
`5%,CER
`Y4
`-io~C119
`33PF 63V
`C120
`47 PF,63~ - 3.6864
`5% CER
`
`5',CER ~~
`-
`R92
`220
`1/4W
`
`13
`
`11 5 X
`3 y CZ
`~
`M30
`1489
`
`-=-
`
`4 2
`
`X z 15
`Y 8
`10
`
`•SV
`
`R93
`4.7K
`
`WI
`~ ...
`
`C116
`I
`0.1, SOY
`20'!. CER
`
`..
`
`8D0
`8D1
`8D2
`8D3
`8D4
`BOS
`8D6
`B07
`
`---10013
`
`8 p~
`-=-11 ~LK a R -NC
`-,---
`
`+SV
`
`M31
`HC273
`
`I
`
`I
`I
`
`1 h 2 0 ,
`3 CLR vcc
`Q1 2
`4 01
`Q2 5
`7 D2
`a D3
`Q3 6
`13 D4
`9
`04
`14 D5
`12 GRNLED
`QS 15 REDLED
`17 D6
`Q6 16 DESCR
`18 D7
`Q7
`DB
`212
`19
`11 CLK
`QB -
`SCRMTD
`
`GND
`~10
`
`M27
`4053
`
`14
`
`-12V
`M39
`(HC273
`
`11
`12 XA
`.Ll y z
`INHVER
`6,:1:- 7L
`•SV
`!,720
`
`BOO
`8D1
`8D2
`8D3
`8D4
`8D5
`8D6
`8D7
`
`CLR VCC
`3
`2
`a1
`4 D1
`5
`02 6
`7 D2
`a D3
`Q3
`9
`Q4 12
`13 D4
`as ~
`14 OS
`Q6 ~
`17 D6
`Q7 ~
`18 D7
`08
`11 DB
`CLK GND
`M21
`..L10
`;"_HCO~
`...i[) 6
`-::
`10
`11
`R9l
`'----~
`lM,1!4W
`
`(2) RCVHYB·
`
`----------
`
`= -
`= -
`
`---
`
`--
`
`r--
`
`j
`
`(3) 8D0
`8D1
`8D2
`B03
`8D4
`8D5
`8D6
`(3) 8D7
`(4) WRO
`
`(SJ SCRMTD
`(SJ 103/212TD
`
`(SJ 212SCT
`
`(4) EIATXD
`
`(4) WR1
`
`-
`-
`
`SCTE
`
`J3-24
`
`(5) 212SCR
`(G) DLBC
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 13 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 13 of 69
`
`4,924,456
`
`c110
`I
`1,
`0.1,50Y
`10%, CER
`
`R81
`
`10K
`
`R83
`10K
`
`,.,,------,--
`
`1- C153
`1500PF, 100Y
`10°/4, CER
`
`,,,.--,c,08,0.1,soY
`20%,CER
`I
`R89
`(
`.--l 1----.......,i1v-1i----:-:-i
`..L
`,.-- CR38
`B 360
`R
`.,,.
`8
`1/4W . ., 5.1Y
`u
`h
`,.,
`/'L..-C150
`2
`1/t.W rr YF-
`0.1,50Y
`>r;-;-
`20%,CER
`1 -=-
`r--l
`M10
`12 11
`1
`5
`.J:Oj,5QY
`7 10%,CER
`ss1261
`- 20%,CER I~l\~gxr
`- 1 - - - . . . . :2'"="'0 ALB
`XMFILT 1-
`. . . - - - -H - - - .
`-1----;...._.l~7 ANS/ORG
`- - - - - - "
`tv17
`RB2 ·
`21
`R127
`__._ _ _.__..1 ...... 9 1200SQ AGC
`Ls -l 2Y
`1K,1/t.W
`4053!
`10K ,
`---1---1-1;..:;.iO CLK IN
`'-+--1--+..,,..i6 RCYSIG ENERGfl-!1=-3 - - - - - l - - - - l -~ - - - - - - , t . . . - - - - " - . . . - - - c : : ,~ ENERGY
`v DESCM212
`16 16X1200
`71
`6
`~ • 1 2Y
`_..__,1.!: SCT
`8
`....... J.2 TXDATA 75HZ ~NC
`2 INHYER
`M20
`X
`15 RED
`g
`18
`-ii'n TX103
`'-'-
`Z
`1
`YREF ~ k : lS l
`*:1. iWs~~ RfJ~~T I~ g J }ii.Y ~ Y B 10
`* NC
`
`1
`........ .__~2-
`_]_j. ~-::.:...----1,.....,_.J 3-12-96X
`
`,r ~M12
`
`t.558
`
`Clll
`/ 0.1,SOY
`
`4:
`
`-
`
`CER
`
`2.7K
`1/t.W
`
`C ~:.f /t.W
`GRN 6rY
`(R85
`1 K ,1/4W
`
`\.b 3 a2r 2222
`
`7
`
`5
`
`CR36
`PEEDLED
`2_
`
`(2)
`
`(3)
`(3)
`
`(I,)
`
`(2)
`(I,)
`
`(3 l
`(3)
`(t. l
`
`(3)
`(t.)
`
`(3)
`(3)
`(l,)
`(l,)
`
`R86
`L! D
`t.70,1/t.W
`I 9- - - 1
`Q ~ - - - - - ' . _ , , . , µPSCT
`~-10 ~
`f l>CLK Q 1..
`
`r,..1..-Ml.4
`t.013B
`
`.5y
`
`CK1
`
`J.._
`
`3'
`
`- ' BBCLK
`_, .JJPBBCLK
`
`1
`
`,
`
`1
`
`R128
`1K
`1/t.W
`
`-
`
`M13
`551262
`1~~
`~ll ALB
`'="12 ANS/ORG16X1250 ~ f 1/t.W
`.--+---1----ea-13
`::. ALB
`I
`- - - ~ + - - 1 - - - - 1 - - - 1 - l - l - - - - 4 i - - - - - - - - - - - - - r . . _ 212SC T
`L:...ll 103SQ
`SCT ...,
`TX103 ;g--
`C114 1 SOY TXDATA
`"----1---___.-.....1-----------1----a-...,-,,. 103 RCYD
`N 103 DATA ..,_
`21
`·; ,'
`18
`_, 212RCYD
`212I
`212DATA
`,
`v
`212SCR
`SCR 11',
`lO%,_FER 22 103IN
`. _ 10 - - - 7
`CARPLLJ2Nc l ~ . sY
`c11s .. 1
`10
`ENERGY YREF J___, 27K1/t.W
`Qt. S
`r- IN
`.__
`SOY 10% -
`1
`8
`16X1219 17
`Q5
`'
`CKIN
`YCC JZ..12Y Jc C152
`'
`~ RST
`9 EXTCLK
`i----------,....._ M28
`tR90
`,r- YSS YDD.1§- •SY
`NC-JQ TEST BAR GND i1,
`I
`t.0208
`27K
`.1, SOY
`' - - - - - '
`-=-
`1/t.W
`_ 20%
`- - - - - - - ' -:!=
`~ DASEL 1
`'-+---i--======-::.-::.-::.-=..-=..-=..--:...-:...-----'-_c_E_R----' +5Y
`: . , . , DASEL2
`,--------+--+-----r,~ CLKSEL1
`_....._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ____...
`~=:t================================j=-- ~------+--+-----1~c,, CLKSEL2
`R77
`R51
`-
`C117
`R7l.
`10K
`820PF,50Y
`100K
`10%, CER '--r---J~.7K
`1/t.W
`
`017Y3.3.579MH-=-,--z
`
`.1..
`
`R5t.
`
`,v \
`~•SY C112
`0.1,50Y
`10%,CER
`
`1
`
`)
`
`.
`_
`· •
`
`TS I
`6. OY
`
`CH+ NC
`
`• Y
`
`6
`-y ,-.,-:::
`1 .J..
`
`5"
`
`.___ _
`
`6
`21 5K 5 :
`.,,.
`
`"
`
`152
`1M5
`
`R76--.,,_
`18
`.
`7
`10K
`OSCIN OSCOUT
`TONE 16
`_ __.._ _ _ ----"-'3 C1
`AKO jQ NC
`4 C2
`"-14 C3
`-t--+----+---,,1
`-t--+----+---',-=-l3 R1
`12 R2
`_ __..__,._~1~, R3
`-+--+--4----'--'-4R4
`_ __..__,.__2"""' c E
`~------'1~5 s TD
`-::' 3 l ,..
`'-----"i;>\,LK
`Ml.l.
`l.0138
`'-Mi,5
`____:5:c.::0-=..89"-----------------------1_-::. 103/212 TD ( 5)
`-+---------------------------1'~) XCLK
`
`1..---C113
`O.l,50Y
`10%,CER
`
`/
`,/
`7
`:::,..:....---H---_J
`-~----~----~~
`I _ - - -
`LJ D
`0 ..,_1--1------r-,
`F6 ~
`-....
`
`8
`
`.LJPSCR
`
`(/,)
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 14 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 14 of 69
`
`4,924,456
`
`(4 l RXLEO ' '>------1
`
`M36
`~ 74LS08
`
`+5V
`
`l"'8-~---H-rT~
`R94
`CR26
`1K,1/4W
`RXLEO
`
`_
`
`7
`
`RN7
`, 27K
`...J
`".I
`
`-
`
`~Q
`
`C43
`.1,50V
`51/.,PE
`
`-
`
`+5V
`120
`vcc
`L
`01
`~
`02
`03 j _
`04
`,1L
`Q5
`1L
`06
`07 16._
`lL
`08
`GND
`i10
`
`+5V
`
`M5
`HC373/
`
`BOO 3 D1
`,8D1 4
`8D2 7 D2
`803 8 03
`8D4 13 D4
`D5
`80514
`D6
`B0617
`D7
`8D718 08
`11
`CLK
`OE
`
`J
`
`~D RN8
`27K, 1/4W
`
`[D-.5y
`
`M46
`L:Q2)
`
`ID.a
`
`+5V
`
`I
`
`~
`
`C J
`- - - -
`r-
`IN¼ - - - - - -
`2 CLK
`5 Ct>SELl
`6Ct>SEL2
`9DAT1 J;:n
`12ANSL1-11
`15 V 29 !i='i5X
`16 ATTN
`19 RSTLED
`
`+SY
`
`-
`~ t 2 ~ ,ho}
`vcc
`CLR
`BOO 3 01
`-
`Ql
`-
`801 4 02
`02
`802 7
`-
`03
`03
`-
`803 8 04
`~
`Q4
`804 13 05
`-
`Q5
`-
`-
`805 14
`Q6
`D6
`8D6 17
`Q7
`But lti D7
`-
`~
`Q8
`11 D8
`-
`GND
`
`- ~
`
`
`
`+5V
`
`r17
`+5V
`r - - - - - - - - ,-,. RN8
`I 27K
`L- - - - - - - - ...J
`OSR 1 , "
`2
`5fXR
`6 ere;
`9 RI
`12 SYNC LED
`15 OH
`16 DLBC
`19
`
`I
`
`. II! . II
`
`II(
`
`Ill
`
`Ill
`
`11 1
`
`h
`
`M52
`HC273( 1 h
`vcc
`CLR
`BOO 3 D1
`01
`8D1 4 02
`02
`8D2· 7 D3
`03
`8D3 8
`Q4
`8D4 13 D4
`Q5
`8D5 14 D5
`06
`06
`806 17 07
`Q7
`B0718 08
`Q8
`ll CLK
`GND
`
`-
`
`--
`
`(5) SCT
`( l SWRST
`
`(13) ~g~
`802
`803
`804
`805
`806
`(3) 807
`(4) WR2
`
`(4) WR3
`
`(3) WR
`
`(3) LCS2
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 15 of 81
`
`

`

`U.S. Patent May 8, 1990
`
`Sheet 15 of 69
`
`4,924,456
`
`366 121K
`
`14.65K
`87OK
`
`27K
`!OK
`27K
`
`27K
`
`R58
`3K,1/4W
`
`+5V
`
`•SY RN1
`
`CR39
`8
`+5V
`
`C26
`lOOOPF
`~lOOV
`1O¼,PE
`
`-::
`
`C32
`.22, 10OV
`5%,PE
`
`CR32
`
`CR33
`
`CR34
`
`CR35
`
`R95
`
`11<,1/t.W
`R96
`1K,1/4W
`R97
`1K,1/4W
`R98
`1K,1/4W
`
`DATA LED
`
`ANSLED
`
`RSTLED
`
`SYNCLED
`
`FB1
`
`~SG
`
`A
`-
`• ~ FG
`
`. - - - - - - - - -~ RST
`
`(3)
`
`CXR
`
`DSR
`
`4W
`+5V
`2
`
`CTS
`
`(3)
`
`RI
`
`REF
`
`(4)
`
`• 12V
`
`• V
`
`•5V ~
`2K,1/2W
`R39
`-12V ~ - V
`2K,112W
`CASEL1
`
`+5V
`
`+5V
`
`CABS!
`
`+5V
`
`CASEL2
`
`CABS2
`
`INHCLK (4)
`V29/FDX (4)
`(2)
`OH
`(4)
`DLBC
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 16 of 81
`
`

`

`9600 s
`
`g
`.....
`~
`•
`7JJ.
`~
`
`f"'+.
`
`I
`
`~ ,...
`
`0
`1,0
`1,0
`
`1200
`
`--~00 ( ARH 120()-I
`
`PARAMETERS
`LINK
`
`----
`
`I
`
`SCRAMBLED O I SCRAMBLED 1 A PARAMETERS
`
`LINK
`
`( 50-100) ms J; , I 765ms-l
`BLED 0
`SCRAM-SCRAMBLED 0
`I
`
`2225Hz.ANS.TONE
`
`455ms
`
`ORIGINATE
`
`CTS
`
`CXR
`
`RXA
`
`TXA
`
`RI _J
`
`ANSWER
`
`CTS
`
`CXR
`
`RXA
`
`TXA
`
`°"
`~
`~ -...
`I ~
`J ~
`
`-...
`
`1,200 H 9600 ~
`1,0
`0'\
`g,
`0'\
`_j a. ,...
`00 =-
`
`H 9600(ARH 1200 I
`
`I
`I
`'
`:PARAMETERS
`ILIN-K~~
`
`765ms-1
`
`• I•
`
`I 50-100)ms~
`
`PARAMETERS
`
`SCRAMBLEDO I SCRAMBLED 1 X LINK
`
`7??5H2 ANS TONFY SCRAMBLED 0 )(
`
`Fl---,.10
`
`n2.0Sec.
`
`I
`
`I
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 17 of 81
`
`

`

`~
`~
`
`.a;;.
`
`~
`e,
`m.
`ga
`
`--.,l
`~
`
`~
`~
`~
`a:
`~ f""t-.
`~ .....
`V1
`~
`
`~ =
`
`IN SEQ TO DTE
`DECOMPRESS GOOD FR.AMES
`
`RCVD OK
`SEND ACK TO ALL FR.AMES
`
`SPEED FULL DUPLEX
`ESTABLISH LINK AT LOW
`
`HISPEED HDX
`TRANSMIT DATA AT
`
`LINE
`SETUP HISPD HALF DUPLEX
`
`N
`
`PUT IN BUFFER
`COMPRESS DATA AND
`
`LO SPD LINK
`INIT RECOVERY ESTABLISH
`
`AND RECEIVE
`ESTABLISH HDX LINK
`ACK REQ FOR HISPD AND
`
`N
`
`RECEIVE DATA TO DTE
`ENABLE SEND AND
`
`DISCONNECT
`
`8
`
`FOX LINK
`ESTABLISH LOW SPEED
`
`Flq.ll
`
`FULL DUPLEX AND SEND ACKS
`ASK REMOTE TO GO LOW SPD .
`
`.-------------1.A
`
`WITH REMOTE
`EXCHANGE LINK PARAMETERS
`
`SPEED FOX
`ESTABLISH LINK AT LOW
`ORIG/ ANS CALL AND
`
`START
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 18 of 81
`
`

`

`°'
`
`Ul
`.i..
`-...
`.i..
`N
`\0
`-...
`.i..
`
`\0,_
`O'I
`~
`00
`~
`
`m.
`r:Jj ::r
`
`~
`~
`~
`~
`
`~ =
`
`~ .......
`~ i-+-
`•
`~ r.n
`
`TRANSMIT
`
`TRANSMIT
`
`STEP HIGHER SPEED
`SET UP LINK FOR ONE
`
`TRANSMIT
`
`LOWER SPEED
`SET UP LINK FOR ONE STEP
`
`DISCONNECT
`
`RATIO
`CALCULATE RETX
`
`FOX LINK
`LOW SPEED
`TXMIT DATA ON
`
`y
`
`N
`
`~~-,.,2
`
`GO LOW SPCED
`SEND CONTROL FRAME TO
`
`SIZE BLOCKS
`TXMIT DATA UP TO WINDOW
`
`DUPLEX
`SET UP HISPEED LINK HALF
`
`REMOTE TO GO HISPEED
`SEND CONTROL FRAME TO
`
`STORE IN BUFFER
`GET DATA COMPRESS AND
`
`TRANSMIT
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 19 of 81
`
`

`

`U.S. Patent May 8, 1990
`9600vp OBJECT CODE
`
`Sheet 19 of 69
`
`4,924,456
`
`Fifq.13-1
`
`:03000000F3186D85
`:0200080018FEEO
`:0200100018FED8
`:0200180018FEDO
`:0200200018FEC8
`:0200280018FECO
`:0200300018FEB8
`:0200380018FEBO
`:0200660018FE82
`:10007000F32100AOAF771101A001FF3FEDB031FFE8
`:10008000DFCDE937CD2AODCD3CODCD340DCD3COD66
`:06009000CD2AODCD3COD50
`:10009600CD340DAF2F32A8DBCDBA38CDA536CD86FF
`:OBOOA6003721769CCB96CB4E2803CD73
`:1000BlOOCDOBCDCE013A739CB72003CDCF73CD6C60
`:OCOOC10077F331FFDFCD9B37CDB837114E
`:1000CD005721CDD638CDOBODCD5111CDAD0121CA56
`:OEOODDOODBCBDEF33E0132C2DB3EDDED471130
`:lOOOEB003ElCCDCD38117B23CDEA3811B122CDDCAE
`:0200FB00~811BA
`:1000FD004B26CDE338ED5E3EB9D3223A32DB320DDD
`:07010DOODBAF32A6DB2F324D
`:10011400A8DB2FF64032A7DBCD9DOBFBCDBA38CD43
`:06012400833ACDB83ACD8C
`:10012AOOCFOECD1439CD2DOECD440ECD6BOECD870D
`:OB013A0001CDBC013A739CB720DC2112
`:10014500ABDBCB46CB86C44D76CD670118CDCDBA9A
`:10015500383A008CCB4728F6210C9FCB86C3001A72
`:0601650018EC3A008C4783
`:10016B003AA6DBA8E601280CCB402809AF3214DBFA
`:10017B007832A6DBC93El8CD483Al8F43A739CB7CF
`:06018B00281F3A008D4719
`:100191003AA7DB4FA8E64028127832A7DBCB7028BC
`:1001Al000A21C6DBCBEE3333C3DD04C93A769CCBDF
`:0601B100472004CDF60COE
`:1001B700C9CDEFOCC921769CCB4EC8CB56C8CDCD47
`:OD01C7000B3AC2DBC3B03E3E23CD523A21BD
`:1001D400ADDB360AC921ADDB35CAE8013E23CD5279
`:OA01E4003AC3703921769CCBD6C3D4
`:1001EE0070393A3CDBFE01CA00023A709CFE10C226
`:0901FE000004CD6AODCD760BCD95
`:10020700B811F3CDOBOEFB21CEDBCB96CBE6CBDEC5
`:1002170023CB86CD7FOCCD530CCDFDOCCD420C3EBO
`:06022700B9D3223El8CDOO
`:10022D006B383EOACD7C383E36CD8A383E03CD98AC
`:OF023D0038CDDDOBCDEBOB3A3CDBFE01204F2122
`:10024COOCBDBCB6EC27302CDBA38CD6DOAD2CE02E7
`:OA025COOCDBEOAD20603CD2BOBD253
`:100266003D0421C5DBCB46CADA04C353023A709C6F
`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 20 of 81
`
`

`

`US. Patent May 8, 1990
`,::::.,.13-2
`
`Sheet 20 of 69
`
`4,924,456
`
`:09027600FE01C29502CDBA38CD9B
`:10027F006DOAD2CE0221769CCB4E20F021C5DBCB6E
`:OF028F0046CADA0418E6FE08C2B402CDBA38CD6A
`:10029EOOBEOAD2060321769CCB4E20F021C5DBCBC5
`:OD02AE0046CADA0418E6CDBA38CD2BOBD2C3
`:1002BB003D0421769CCB4E20F021C5DBCB46CADA20
`:1002CB000418E621CEDBCBCECB9ECDF30BCDFBOBB7
`:0302DB003E78CD9D
`:1002DE007C38CDBA3821C5DBCB4EC2E302CDEFOC54
`:1002EE003El932CODBC3A3063E57D3203E12D320A5
`:0302FE003E01328C
`:10030100759CC3A306CDF30B21CEDBCB9ECBC6CD13
`:OC031100FBOB3A3CDBFE01C23204F3118E
`:10031DOOFA26CDE338FBCD8D0B3A739CB7CAEA03B1
`:09032D0021CBDBCB6EC279033A4F
`:l003360037DBFE05CACD03F~04CACD033A40DBFE19
`:1003460002C2790321CODBCBF63E57D3203E12D33F
`:04035600203E013212
`:10035A00759CCD3809CD6C09CD880DCDDBOD21C03A
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`
`CommScope, Inc.
`IPR2023-00066, Ex. 1014
`Page 21 of 81
`
`

`

`U.S. Patent May s, 1990
`,=-;.__.,.13-3
`
`Sheet 21 of 69
`
`4,924,456
`
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