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| + * XRT7296 FEATURES $,++- ./ . * 0,+ 1 /, +/ 2 1 3+ - 4,++ % +/ 2 1 / 5" 6 5! +/ 2 1 4 ++/ *78*%% +/ 2 1 7 4,+ * 49:4 / / /+ 3/; $,/ + &< 02 , +- APPLICATIONS ./ . =7 * 7 2; >, + * / - ?? >, 0@ >, $3 = / + GENERAL DESCRIPTION 1 "%) .,++- 0@ . '")@3 ( ')!@3 ( +/ / + 3 , . =7 * '&!@3 ( + /A+ /3+ 1 / + 1 "%& =7 * "%& / 1 "%) / , /+/; ,+*+ , + @ ,+ // 6 /1/+ 7 5" / 1 / 49 '( :4 '( / .,/ . 3 1 + / + - / //, + /+, 1 /1 . / / + . A + + / 4 1 / / .,/ / 3 ORDERING INFORMATION Part No. "%) 0 "%) 8 Package ! ) @+ 0 0 ! C @+ C =C Operating Temperature Range * D !& * D !& 3+ +- 1,1 A + / + 1 / / / 3 + + / .+ , , =*/1 ,+ 1 //, - + ++ >, A + / . + >,+B 1 /*/ / + $ - + + ,3+ *1 3 1 +/+ + *3/; 3+ 2 1 1 3,+ * + *3/; //, 1 "%) ,./ , , 4@= /1+- /; !* 0 0 =C /; 1 / >, + &< 2 , + /, A, 2 . "8 ' /, . D / ( !" # $ %&! '&( ))!*" $ '&( ))!*"" XRT7296 BLOCK DIAGRAM = & 7= < & 0 7 # " ! % @0 49:4 / 0,+ 1 0 @0 75 0 7 # 4/; @? " ! = 40< 79 75 0= #= 49:4 / & ) * @ 75 @ 0 " % @ ! @= ) ) ==0 ==0 < 57 57 < Figure 1. XRT7296 Block Diagram XRT7296 PIN CONFIGURATION # ==0 ==0 * = < 0 7 # 57 7= = 40< 79 & ) " ! % ! " ) & % ! " ) & 7 0 < < 0 75 57 @ 0 @ 75 @= #= 0= 75 # ==0 ==0 * = < 0 7 # 57 7= = 40< 79 & ) " ! % ! " ) & % ! " ) & 7 0 < < 0 75 57 @ 0 @ 75 @= #= 0= 75 28 Lead PDIP (0.600") 28 Lead SOJ (Jedec, 0.300") PIN DESCRIPTION Pin # Symbol # ==0 ==0 Type Description Receive Clock Input. , + /+/; . 0 7 Remote Loop Back. 11 1 /, 0 7 1 + , # ==0 ==0 11 ,+ ,+- Local Loop Back. 11 1 /, 0 7 1,1 1 * / , , 0= 75 / +- ==0 ==0 11 ,+ * ,+- DS3, STS-1 or E3 Select Pin 11 1 + / * 1 / / 49 +2 + / 1 / / :4 Transmit All Ones Select 11 1 /, / ,, @ ++ E 3 1 + 1 . >, /- 3- # 5 V Digital Supply ' &.( . ++ +/ //, - Transmit Positive Data 0 + 1 .++ . # 0 " ! / 3 1 . 3- , + Transmit Negative Data. 7 + 1 .++ . # 0 " / 3 1 . 3- , + Transmit Clock . 0 7 Digital Ground . ++ +/ //, - Encoder Disable. 11 1 3+ 49 :4 / .,/ ,+ * 3- = >, 1 , 3 11 . 0 7 + - * / Decoder Disable 11 1 3+ 49 :4 / .,/ ! * = < 0 7 # 57 7= & ) " ! % = XRT7296 PIN DESCRIPTION (CONT'D) Pin # Symbol 40< Type = Description Bipolar Violation Output 1 11 . 3 21 3 + + / 1 / ,+ / / 1 0 7 + Receive Binary Data. + 1 1 = *, , . 0= 75 Receive Negative Data. 1 + 1 / . 7 Receive Positive Data 1 + 1 / . 0 Receive Clock Output 1 + 1 . # Driver Monitor Output. . @ + @ 0 @ 75 . ! # /+/; @= 11 , + 1 A @ + / Monitor Ring Input @ + . 75 / 3 / / 1 . + .+* , / ++- ,++ 11 Monitor Tip Input @ + . 0 / 3 / / 1 . + .+, / ++- ,++ 11 Analog Ground . + //, - = = * Transmit Ring Output @ + 1 + G . . 1 Transmit Tip Output. @ + 1 + G . . 1 5V Analog Supply ( 5%) . + //, - Transmit Level Select. 1 , 1 , /., 1 1 1 , , + + , . , /3+ + 1 , , + + , 0 75 / 3 3- 1 H11H H+2H 1 , + . A< H11H H+2H 3 +2 81 1 /3+ + 1 + 1 . A< , 3 H+2H ' 1 ,+ + /./ ( 81 1 /3+ + 1 1 . + 1 & . A< - 3 H11H 1 , , ,+ . 1 "%) / 2++ 1 ,+ + /./ >, 81 1 /3+ + 1 1 & . 1 A< , 3 H11H ' 1 ,+ + /./ ( Note: This input pin is only active, for DS3 and STS*1 applications. ) " ! 0 7 In-circuit Testing. +2 1 /, ++ + + , , 11** / ++2 . *//, ++- ,++ 11 Receive Positive Data 79 , 1 / 3+/; + 1 .++ . # Receive Negative Data 79 , . 1 / 3+/; + .++ . # & ) " ! % & 79 75 0= #= @= @ 75 @ 0 57 75 0 < < = = = = = Note 1 If a bipolar violation occurs, RPOS and RNEG can correspond to the decoded versions of RNDATA and RPDATA respectively. If DECODIS is high, RPOS and RNEG always track RPDATA and RNDATA respectively. XRT7296 ELECTRICAL CHARACTERISTICS (See Figure 8 ) Test Conditions: VDD = 5V 5%, TA = -40C to +85C, unless otherwise specified. All timing characteristics are measured with 10pF loading. Symbol Parameter # +/; , - -/+ ' *( # +/; , - -/+ '( $ ? := I $ ? := $ I # +/; '. %.( # +/; $++ '. %.( 07 # $++ ? 07 # $++ :+ 0 75 # 0 +# +/; , - -/+ # +/; '. %.( # +/; $++ '. %.( 07 # $++ ? 07 # $++ :+ #= +/; '. %.( #= +/; $++ '. %.( 0=7579 #= 0 +- , , < < : <= <=: +- <+ "& & & Min. & " Typ. & & Max. && & Units . . AC Electrical Characteristics & ) & & && . DC Electrical Characteristics < < && , 2 <+ , :1 <+ =, , 2 <+ =?K* =, , :1 <+ =?K , ; , , / / / / 0 %) ' , K<( Notes: 1 When the encoder is enabled, a handling delay of four and a half TCLK clock cycles for B3ZS and five and half clock cycles for HDB3 always exists between TPDATA/TNDATA and TTIP/TRING. The handling delay is reduced to two clock cycles when the encoder is disabled. 2 When the decoder is enabled, a handling delay of six and a half RCLK clock cycles will always exist between RPDATA/RNDATA and RPOS/RNEG/RNRZ. The handling delay is reduced to one and half RCLK clock cycles when the decoder is disabled. 3 Supply current is measured with transmitter sending all ones AMI signal and with Transmit Level (TXLEV) set to high. 4 All inputs except pin 19, 20 and pin 26. Specifications are subject to change without notice & XRT7296 ABSOLUTE MAXIMUM RATINGS 02 , +- *& D)&< 02 0 0; 8 , <+ '- 0( *&< < D &< , , '- 0( , *)& & <+ - 0 *&< < D&< 02 =C 0; "&8 SYSTEM DESCRIPTION B3ZS/HDB3 ENCODER 3 , 1 / 3+/; 3 / 1 49 :4 3- 1 . 1 * , . / 3 , + 3- $ 3- + 0 7 3 / / 1 A ++- 1 + / , . 49 1 /1 3+/; . 1 / /, B +/ 3 . 2 / 21/1 / 3 + + 1 +/ / 4< 1 , 0 7 . + 3/; '==0( 11 - = >, REMOTE LOOP-BACK ==0 11 /, / 0 7 3 1 + 1,1 0 75 1 3- # 1 0 7 ) LOCAL LOOPBACK ==0 11 /, 0 7 1,1 3 1 1 / 1 / 1 1 + #= 0= 75 / # 0 7 / +- ?+ 3- = >, 0 7 2++ ++ 3 1 + ==0 ==0 11 ,+ ,+- B3ZS/HDB3 DECODER 1 / 3+/; /+, . 49 :4 / 3- 1 . 1 * 1 49 . 1 / / 3 1 4< < ,+ +/ 1 2 1 . :4 / + / 3- 1 * +2 4< < ,+ 2++ 3 / +/ 2 1 / 3 1 / 3 + + / 21/1 /. 1 / /1 / / 1 40< , , DECODER DISABLE $ , +/ 21 1 / 3 3- 1 / / 3 3+ 3- = 11 1 ++ 3 + + ,+ / 1 40< BIPOLAR VIOLATION 1 40< 2++ 11 . 3 21 3 + + / 1 / ,+ / / 1 07 1 + ,+ +2- . 1 / , , 0= 75 21 = +2 XRT7296 PULSE SHAPER 0 ) &. G "& &. 1 ,+ 1 //, , /3 . .+ + 2 / + /1>, *1 1 ,+ , 1 + 1 + , . 1 ,+ / 3 M, , 1 < ' +( 81 1 / 1 /*/ / A/ & . < 1,+ 3 11 81 1 / + 1 & . < 1,+ 3 +2 < 11 3+ 1 , + + . < ; !&< ; 21 +2 1 . < 1 .. / 75 ) &. Note 1 Transformer = Pulse Engineering PE 65966, PE 65967 Surface Mount, Same Transformer for DS3, STS-1 and E3. Figure 2. Transmit Pulse Amplitude Test Circuit Parameter Value G : &< ): DRIVER MONITOR ? 0 75 , 1 / .+, 3- 1 / @ 0 @ 75 . + / 1 . ! # /-/+ /-/+ @= 2++ 3 11 , + 1 A @ + / , 0- ,/ / + <+ ; ,/ / Table 1. Transmit Transformer Characteristics " XRT7296 DS3 SIGNAL REQUIREMENTS AT THE DSX $ ,+ /1/ / /. 1 * 21/1 / / . 1 // / 1 // / A 1 21 1 + /1 1 3, . M/; 1 * / / /./ 3+ + 1 + >, 'Table 1) 1 "%) / 1,1 & . . "! /3+ 1 * , +- 2 + ,+ + >, A G 1 7 ,+ + 'See Table 3 and Figure 3( 1 4 ++/ *78*%% ,+ + 1 ,+ 3- 1 "%) 1 + Parameter 0,+ 1 ")@3 "& &. Specification 4 + 2 1 1 * ,3 , '49( + ,+ , . 1 + Figure 3 Figure 4 1 ,+ + , 3 /+ 3- / ./ . 1 + 1 ,+ + , , 3 3 * 2 )< ; !&< ; , 1 / . 1 ,+ $ ++ 1 2 )! @:B , 3 *! D&"4 1 2 ") @:B , 3 *!4 *4 02 + Notes 1 The pulse template proposed by G.703 standards is shown in Figure 4 and specified in Table 4 The proposed G.703 standards further state that the voltage in a time slot containing a 0 must not exceed 5% of the peak pulse amplitude, except for the residue of preceding pulses. 2 The power levels specified by the proposed G.703 standards are identical except that the power is to be measured in 3kHz bands. 3 The all 1s pattern must be a pure all 1s signal, without framing or other control bits. Table 2. DSX*3 Interconnection Specification Lower Curve Time *) *) D) D) & N D Equation * N D! OO* * Time *)! *)! D ) D) Upper Curve Equation D &N D N DOOD &D" *!'*)( Table 3. DSX-3 Pulse Template Boundaries for ANSI T1.404 Standards (See Figure 3. ) Lower Curve Time *!& *) *) D) D) D & N D Equation * N D !OO * * Time *!& *)! *)! D ) *)! ) Upper Curve Equation D &N D N DOO D !D" *!'*)( Table 4. DSX-3 Pulse Template Boundaries for Bellcore TR-NWT-000499 Standards (See Figure 4) ! XRT7296 Normalized Amplitudes Normalized Amplitudes *& & & ! ) * * ! ) * * *& & & Time Slots-Normalized to Peak Location Time Slots-Normalized to Peak Location Figure 3. DSX-3 Isolated Pulse Template for ANSI T1.404 Standards Figure 4. DSX-3 Isolated Pulse Template for Bellcore TR-NWT-000499 Parameter Specification &!@3 4 + 2 1 1 * ,3 , '49( "& &. 2 *3 2 + + , 1 * ./ , +2* .+ 2 1 4 /, .. . >, /. + @:B 2 1 *"4 "4 STS-1 SIGNAL REQUIREMENTS $ * 1 /*/ / . 1 * Table 5 + 1 + >, 1 * . 1 + ,+ + - ; /. . * '*I*&( ' Figure 5( 02 + Table 5. STSX-1 Interconnection Specification Normalized Amplitude ) ! ! " ! * &% ! & )& !) Figure 5. STSX-1 Isolated Pulse Template for Bellcore TA-TSY-000253 % XRT7296 E3 SIGNAL REQUIREMENTS 1 "%) ,+ 1 /. / 5" Figure 6 12 1 ,+ ; >, / 5" Table 6 12 1 ,+ /./ < " '&& D &( !)& '&& * &%( 7+ ,+ && & '&& * &( & '&& D %%&( % '&& D &&( *&! Figure 6. CCITT G.703 Pulse Mark at the 34,368-kbit/s Interface Parameter 0,+ 1 '7++- / ,+( Value ++ ; . + + , /* . 2 1 1 ; 'see Figure 6( / . 1 = /A+ "& < < < && %& & %& & 0'( /1 / / 7+ 0 ; <+ . @; '0,+ ( 0 ; <+ . / '7 0,+ ( 7+ 0,+ 8 1 . 1 + , . 0 7 0,+ 1 . 0,+ + . 1 8 1 . 0 7 0,+ 1 7+ :+. + , Table 6. E3 Pulse Specifications XRT7296 $ # ? 0 = 7 I 0 = 75 := $ # ? 0 = 7 := $ #= I 0=75 = 79 Figure 7. Timing Diagrams for System Interface XRT7296 0 7 < < V 0= 75 79 40< 40< ,+ 40< 7 ,+ Note The delay from RPDATA/RNDATA to RPOS/RNEG/RNRZ is not shown here. Figure 8. Bipolar Violation Example for B3ZS Mode XRT7296 < P 4 & )"! OUTPUTS RECEIVER MONITOR = 0 = 0 8 0* = : < & " # % ! " & ) ) ! &)"! # U1 XRT7295 70? 57 4 ! " = = 7 7 =# 4 "& @ @ # 57 57 & 57 0$ < $ 4 $ 0 4 < < ) % $ ) & =: P4 # 7 0 U2 XRT7296 ==0 " ! % % % ! " # 7 0 ==0 * = < 7= = & ) & % & ) & ) " ! ) & % ==0 ==0 = < 7= = & 0 57 8 0*! #= " ) & #= 0= 75 79 RECEIVER OUTPUTS & # 4& % # 0= 75 79 ) "& $ 0$ 4 7 ! 7 4 0 " 0 75 ) 4) 0 0 $ @ 75 @ 0 57 @= ! @= 40< < 57 < 4 ) % & ) " " ) 0)&%)) 75 7$=@ Q 0? 75 7 75 0 )&%)) 0 )&%)" 7 ?$ @=?7 < " $ D $ 40< TRANSMITER MONITOR OUTPUTS ! $ 0 < $ 4 Q $ ) % $ $ 4 D $ & $ Figure 9. Evaluation System Schematic XRT7296 28 LEAD PLASTIC DUAL-IN-LINE (600 MIL PDIP) Rev. 1.00 ! & E1 D E A2 A1 Seating Plane A L B e B1 eA eB C INCHES SYMBOL 4 4 4 MIN ) & & ! ! ) !& MAX & " %& " &)& )& &! MILLIMETERS MIN ) ! ! ) ") && & MAX )& "! %& &) "! ! %"& &!! " 4 ) 4 ) & " & & 4 & 4 & % ""! &! & Note: The control dimension is the inch column XRT7296 28 LEAD SMALL OUTLINE J LEAD (300 MIL JEDEC SOJ) Rev. 3.00 D ! & E H A2 Seating Plane e B A1 C R E1 A INCHES SYMBOL 4 : MIN & % ! )%" % ) & MAX & " " " MILLIMETERS MIN & ) % ) "" " ))& !& ") MAX &) % & !! ") )% !! & 4 " 4 Note: The control dimension is the inch column & XRT7296 7= 1 1 ; /1 1 ,/ / 1 ,3+/ * ./ +3+ - , 3+ - . 1 , . - //, * /3 1 / - +/ , - 1 1 ; 1 1 //, . . . 1 /1 ,+ / 1 +- . ++, , - , , E /./ +/ 81+ 1 . 1 ,3+/ 1 3 / .,++- /1 /; L 3+ - 12 , . //,/ / 1 , . - . ,/ +. , +/ 21 1 .+, +.,/ . 1 ,/ / 3+- 3 A / /, .+, . 1 +. , - ./ +.. / . - .. / 0,/ , 1B . , ,/1 +/ ,+ / 2 ,/ ./ 1 G '( 1 ; . M,- 1 3 B L '3( 1 , , ++ ,/1 ;L '/( + +3+ - . >, +- / , 1 //,* / -1 1 + ,/ 21+ 2 1, 1 2 / . 13 ) |
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