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Maxim DS21Q55 specifications E1 Mode, Application Return Loss

Models: DS21Q55

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Product Preview							DS21Q55
E1 Mode

L2	L1	L0	APPLICATION	N (1)	RETURN LOSS	Rt (1)
0	0	0	75O normal	1:2	NM	0
0	0	1	120O normal	1:2	NM	0
1	0	0	75O with high return loss*	1:2	21dB	6.2O
1	0	1	120O with high return loss*	1:2	21dB	11.6O

*TT0 and TT1 of LIC4 register must be set to zero in this configuration.

T1 Mode

L2	L1	L0	APPLICATION	N (1)	RETURN LOSS	Rt (1)
0	0	0	DSX-1 (0 to 133 feet)/0dB CSU	1:2	NM	0
0	0	1	DSX-1 (133 to 266 feet)	1:2	NM	0
0	1	0	DSX-1 (266 to 399 feet)	1:2	NM	0
0	1	1	DSX-1 (399 to 533 feet)	1:2	NM	0
1	0	0	DSX-1 (533 to 655 feet)	1:2	NM	0
1	0	1	-7.5dB CSU	1:2	NM	0
1	1	0	-15dB CSU	1:2	NM	0
1	1	1	-22.5dB CSU	1:2	NM	0

155 of 248

012103

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Maxim DS21Q55 specifications E1 Mode, Application Return Loss

Contents

Description FeaturesApplications Ordering InformationProduct Preview DS21Q55 Ansi Clock Synthesizer Feature HighlightsGeneral Line InterfaceSystem Interface Framer/FormatterControl Port Test and DiagnosticsHdlc Controllers Extended System Information BusProduct Preview DS21Q55 012103 Table of Contents Channel Blocking Registers Error Count RegistersSignaling Operation PER-CHANNEL Idle Code Generation186 149170 177Mechanical Descriptions AC Timing Parameters and DiagramsOperating Parameters Document Revision History Block Diagram Figure Block DiagramPIN Function Description Transmit Side PinsInput/Output Transmit Signaling InputTSYNCx Transmit SyncReceive Side Pins Receive Sync Receive Signaling OutputReceive Signaling Freeze RSYNCxTstrst Parallel Control Port PinsINT BTS MUXJtms Jtag Test Access Port PinsA7/ALEAS JtrstLine Interface Pins Supply Pins Pinout DS21Q55 PIN Description Table PIN Symbol Type DescriptionESIBRD2 DVSS3DVSS4 ESIBRD1RLCLK1 RFSYNC2RFSYNC3 RFSYNC4RSYNC2 RSIGF3RSIGF4 RSYNC1TNEGI2 TLINK3TLINK4 TNEGI1TVSS4 TVSS2TVSS3 AD1 Package DS21Q55 Pin DIAGRAM, 27mm BGAAddress Register Name Abbreviation Parallel PortRegister Map PCDR1 SR9IMR9 PcprRS4 RS1RS2 RS3H1FC TCBR3TCBR4 H1TCRAF RFDLM1RFDLM2 IbocInformation Rsaoics Rsrcs Rfcs Brcs Thscs Peics Tfcs Btcs Special PER-CHANNEL Register OperationRegister Name PcprPCDR4 PCDR1PCDR2 PCDR3Programming Sequence Figure Programming ModelMstrreg Power-Up SequenceMaster Mode Register TEST1 TEST0 Effect on Output PinsStatus Registers Interrupt HandlingIIR2 Information RegistersInterrupt Information Registers IIR1Transmit Clock Source Clock MAPClock MAP Figure OOF2 OOF1 OUT of Frame Criteria T1 FRAMER/FORMATTER Control RegistersT1 Control Registers T1RCR1T1RCR2 Bit 1/Receive Japanese CRC6 Enable RJCBit 5/Receive B8ZS Enable RB8ZS = B8ZS disabled Bit 6/Receive Frame Mode Select RFM = D4 framing modeT1TCR1 TB8ZS TSLC96 Tzse FBCT2 FBCT1 TD4YM Tzbtsi TB7ZS Bit 7/Transmit B8ZS Enable TB8ZS = B8ZS disabledT1TCR2 06h07h Bit 2/Transmit Frame Mode Select TFM = D4 framing modeT1CCR1 T1 Common Control RegisterT1 Receive-Side Digital-Milliwatt Code Generation T1 Transmit TransparencyT1RDMR3 T1RDMR1T1RDMR2 10h T1 Information RegisterINFO1 Information RegisterYellow Alarm RAI T1 Alarm Criteria TableAlarm SET Criteria Clear Criteria E1RCR1 E1 FRAMER/FORMATTER Control RegistersE1 Control Registers Rcla E1 SYNC/RESYNC Criteria TableE1RCR2 34hE1TCR1 E1TCR2 Bit 0/Automatic Remote Alarm Generation ARA = disabledBit 1/Automatic AIS Generation Aais = disabled Bit 2/Automatic E-Bit Enable AebeAutomatic Alarm Generation INFO7 E1 Information RegistersINFO3 E1 Alarm Criteria Table TCSS1 TCSS0 Transmit Clock Source Common Control and Status RegistersCCR1 SR2 IDR19h Bit 2/Receive Unframed All Ones Blue Alarm Condition RUA1IMR2 Interrupt Mask RegisterLspare LDN LUP Lotc Lorc V52LNK Rdma RRA SR31Ah Bit 2/V5.2 Link Detected Condition V52LNK Bit 0/Receive Remote Alarm Condition RRA = interrupt maskedIMR3 1BhBit 2/Receive Multiframe Event RMF SR41Ch RSA1 RSA0 TMF TAF RMF Rcmf RAFIMR4 IOCR1 11. I/O PIN Configuration OptionsIOCR2 4Ah Loopback ConfigurationLbcr Loopback Control RegisterInformation PCLR2 Per-Channel LoopbackPCLR1 4Eh PCLR34Dh PCLR4Ercnt Error Count RegistersT1 Operation Line Code Violation Count Register LcvcrT1 Line Code Violation Counting Options Table E1 Line Code Violation Counting Options TableLCVCR2 LCVCR1Line Code Violation Count Register 42hT1 Path Code Violation Counting Arrangements Table Framing ModePath Code Violation Count Register Pcvcr ERCNT.1 Framing Mode Count MOS or F-BIT Errors What is CountedFrames Out Of Sync Count Register Foscr T1 Frames OUT of Sync Counting Arrangements TableInformation EBCR1 Bit Counter Register EbcrFOSCR1 FOSCR2TDS0M 14. DS0 Monitoring FunctionTransmit DS0 Monitor Registers TDS0SELRDS0M Receive DS0 Monitor RegistersRDS0SEL Signaling Operation Change Of State Processor-Based Receive SignalingHardware-Based Receive Signaling Receive-Signaling Reinsertion at RserSigcr Force Receive Signaling All OnesReceive-Signaling Freeze Signaling Control RegisterCH4-A CH4-B MSB LSBMSB LSB CH2-A CH2-B CH1-A CH1-BCH9-A CH9-B CH9-C CH9-D RS6 Receive Signaling Registers E1 Mode, CAS FormatRS1 to RS16 60h to 6FhRSCSE3 RSCSE1 , RSCSE2 , RSCSE3 , RSCSE4RSCSE1 RSCSE2Processor-Based Transmit Signaling Channel Phone 15.2.1.1 T1 Mode15.2.1.2 E1 Mode Time Slot Numbering Schemes TableTS1 TS2 TS3 TS4 TS5 TS6 TS7 TS8 TS9 Transmit Signaling Registers E1 Mode, CAS FormatTS1 to TS16 50h to 5FhTransmit Signaling Registers E1 Mode, CCS Format 50h to 5Bh Transmit Signaling Registers T1 Mode, ESF FormatTS4 TS1 CH4-A CH4-BTS2 CH6-A CH6-B TS3 CH8-A CH8-BSSIE2 Software Signaling Insertion Enable Registers, E1 CAS ModeSSIE1 SSIE4 SSIE30Ah LcawSoftware Signaling Insertion Enable Registers, T1 Mode Hardware-Based Transmit Signaling Bits 0-5 of Iaar Register Maps to Channel PER-CHANNEL Idle Code GenerationIdle Code Array Address Mapping Table Write Iaar = 40h Write Pcicr = 7Eh Idle Code Programming ExamplesTCICE2 IaarPcicr TCICE1Information RCICE2 TCICE3TCICE4 RCICE187h RCICE386h RCICE4RCBR2 Channel Blocking RegistersRCBR1 TCBR2 RCBR3RCBR4 TCBR18Fh TCBR38Eh TCBR4Elastic Stores Operation 4Fh Bit 0/Receive Elastic Store Enable ReseEscr Elastic Store Control RegisterIMR5 SR51Eh Tesf Tesem Tslip Resf Resem RslipProduct Preview DS21Q55 109 012103 Receive Side 18.1.1 T1 Mode18.1.2 E1 Mode Elastic Stores Initialization Elastic Store Delay After Initialization TableMinimum-Delay Mode Transmit Side112 012103 CRC-4 Recalculate Method Figure 19. G.706 INT Ermediate CRC-4 Updating E1 Mode onlyReceive BOC 20. T1 BIT Oriented Code BOC ControllerTransmit BOC Rboce RBR RBF1 RBF0 Sboc BoccBOC Control Register 37h24h Receive FDL RegisterC0h SR8IMR8 Internal Register Scheme Based On Double-Frame Method Additional Sa and International Si BIT Operation E1 onlyHardware Scheme Method Rnaf RAFTnaf TAFC8h Internal Register Scheme Based On CRC4 Multiframe MethodRSiAF Receive Si Bits of the Align FrameRRA RSa5 RSa4Receive Sa4 Bits CBhRSa7 RSa6Receive Sa6 Bits CDhCFh RSa8Receive Sa8 Bits D2h TSiAFTransmit Si Bits of the Align Frame TRA TSa5 TSa4Transmit Sa4 Bits D5hTSa7 TSa6Transmit Sa6 Bits D7hD9h TSa8Transmit Sa8 Bits Tsacr Basic Operation Details Hdlc ControllersHdlc Controller Registers Table 90h, A0h Hdlc ConfigurationH1TC, H2TC Hdlc #1 Transmit Control, Hdlc #2 Transmit Control31h, 32h Bit 0/Receive SS7 Fill In Signal Unit Delete RsfdH1RC, H2RC Hdlc #1 Receive Control, Hdlc #2 Receive ControlTFLWM2 TFLWM1 TFLWM0 Transmit Fifo Watermark Bytes Fifo ControlH1FC, H2FC RFHWM2 RFHWM1 RFHWM0 Receive Fifo Watermark BytesH2RCS1, H2RCS2, H2RCS3, H2RCS4 Hdlc MappingReceive Register ChannelsRCB8SE RCB7SE RCB6SE RCB5SE RCB4SE RCB3SE RCB2SE RCB1SE H1RTSBS, H2RTSBS96h, A6h THCS7 THCS6 THCS5 THCS4 THCS3 THCS2 THCS1 THCS0 Transmit97h, 98h, 99h, 9Ah A7h, A8h, A9h, AAh TCB8SE TCB7SE TCB6SE TCB5SE TCB4SE TCB3SE TCB2SE TCB1SE H1TTSBS, H2TTSBS9Bh, Abh Tmend RPE RPS Rhwm RNE Tlwm TNF SR6, SR7Hdlc #1 Status Register Hdlc #2 Status Register 20h, 22hIMR6, IMR7 INFO4 INFO5, INFO6PS2 PS1 PS0 Packet Status H1RPBA, H2RPBA Fifo InformationReceive Packet Bytes Available H1TFBA, H2TFBAH1RF, H2RF 22.3.5H1TF, H2TF Receive Section Legacy FDL Support T1 ModeReceive Hdlc Code Example RFDLM1, RFDLM2 RfdlRFDL7 RFDL6 RFDL5 RFDL4 RFDL3 RFDL2 RFDL1 RFDL0 Transmit FDL Register 22.6 D4/SLC-96 OperationTransmit Section TfdlBasic Network Connections Figure Line Interface Unit LIULIU Receiver LIU OperationTypical Monitor Application Figure Receive G.703 Synchronization Signal E1 ModeMonitor Mode Transmit Short-Circuit Detector/Limiter Transmit BPV Error InsertionTransmit G.703 Synchronization Signal E1 Mode LIU TransmitterCMI Coding Figure Mclk PrescalerCMI Code Mark Inversion Option LIC1 23.7 LIU Control RegistersApplication Return Loss E1 Mode7Dh Network Mode GC5 GC4 GC3 GC2 GC1 GC0Tlbc Transmit Line Build-Out ControlBit 7/E1/T1 Select ETS LIC279h ETS Lirst Ibpv TUA1 Jamux Scld CldsMM1 MM0 LIC3MPS1 MPS0 Jamux LIC2.3 RT1 RT0 Internal Receive Termination ConfigurationTT1 TT0 Internal Transmit Termination Configuration LIC4RL3 RL2 RL1 RL0 INFO2CCR4 Lrcl Tcle Tocd Lolitc Ilut Timer RscosSR1 16h17h Timer RscosIMR1 1µF Recommended Circuits Basic Interface FigureProtected Interface Using Internal Receive Termination Specification Recommended Value Component Specifications Transformer Specifications TableT1 Transmit Pulse Template Figure E1 Transmit Pulse Template FigureJitter Tolerance E1 Mode Figure Jitter Tolerance T1 Mode FigureJitter Attenuation E1 Mode Figure Jitter Attenuation T1 Mode FigureProgrammable IN-BAND Loop Code Generation and Detection TC1 TC0 IbccRDN2 RDN1 RDN0 RUP2 RUP1 RUP0TCD2 TCD1Transmit Code Definition Register B7hRUPCD2 RUPCD1RDNCD1 RSC2 RSC1 RSC0 RDNCD2Rscc RSCD2 RSCD1Receive -Spare Code Definition Register BEhBert Function PS2 PS1 PS0 Pattern Definition Bert Register DescriptionBC1 Length Bits EIB2 EIB1 EIB0 Error Rate InsertedBC2 E1hEAh Bit 0/BERT Enable Berten = Bert disabledBIC BER T Interface Control RegisterBbed Bbco BEC0 BRA1 BRA0 Brlos Bsync SR926h Bawc IMR9BRP3 Bert Repetitive Pattern SetBRP1 BRP2BBC3 Bert Bit CounterBBC1 BBC2BEC3 Bert Error CounterBEC1 BEC2Step Action Payload Error Insertion FunctionTransmit Error Insertion Setup Sequence Table ERC Error Rate Control RegisterBits 0 to 3/Error Insertion Rate Select Bits ER0 to ER3 ER3 ER2 ER1 ER0 Error RateNOE1 Number Of Error RegistersError Insertion Examples Table Value Write ReadNOEL2 Number Of Errors Left RegisterNOEL1 Interleaved PCM BUS Operation Channel Interleave ModeFrame Interleave Mode IBS1 IBS0 BUS Size IbocDA0 Device Position DS21Q55 #1 Rser DS21Q55 #3 Rser IBO Example FigureEsib Group of Four DS21Q55s Figure Extended System Information BUS EsibESIBSEL2 ESIBSEL1 ESIBSEL0 BUS BIT Driven ESIBCR1Extended System Information Bus Control Register B0hB1h ESI3SEL2 ESI3SEL1 ESI3SEL0 Status Output T1 Mode E1 ModeESI4SEL2 ESI4SEL1 ESI4SEL0 Status Output T1 Mode E1 Mode ESIBCR2ESIB4 ESIB1ESIB2 ESIB3BPCS1 BPCS0 Programmable Backplane Clock SynthesizerCCR2 Tdatfmt Tgpcken Rdatfmt Rgpcken Fractional T1/E1 SupportCCR3 72hJtag Functional Block Diagram Figure JTAG-BOUNDARY-SCAN Architecture and TEST-ACCESS PortRun-Test-Idle Test-Logic-ResetUpdate-DR TAP Controller State MachineShift-IR Update-IRSelect-IR-Scan Capture-IRTAP Controller State Diagram Figure Instruction Selected Register Instruction Codes Instruction RegisterInstruction Codes for Ieee 1149.1 Architecture Table Device BIT ID ID Code Structure TableDevice ID Codes Table MSB LSBIdentification Register Test RegistersBoundary Scan Register Bypass RegisterESIBS0 BIT PIN Symbol Type Control BIT DescriptionBoundary Scan Control Bits Table Rchblk Jtms Bpclk Jtclk JtrstEsibrd Tsig Teso NXA Tdata NXA Tsysclk Tssync TchclkESIBS1 MUX Dvss DvddRsysclk Rsync RLOS/LOTCReceive Side ESF Timing Figure Rclk Rsysclk Rsysclk Rser Transmit Side D4 Timing Figure Transmit Side ESF Timing Figure Transmit Side Boundary Timing With Elastic Store Disabled Tsysclk TSER1 32.2 E1 Mode Receive Side Timing Figure Receive Side Boundary Timing With Elastic Store Disabled RSYNC2 Rmsync RSYNC3 Rchclk Rchblk 221 012103 Receive IBO Channel Interleave Mode Timing Figure Receive IBO Frame Interleave Mode Timing Figure TIMING, E1 Mode only Figure Transmit Side Timing Figure Tser LSB Si Tssync Tchclk Tchblk 228 012103 Transmit IBO Channel Interleave Mode Timing Figure Transmit IBO Frame Interleave Mode Timing Figure THETA-JA θJA vs Airflow Thermal CharacteristicsOperating Parameters Absolute Maximum Ratings Capacitance DC CharacteristicsParameter Symbol MIN TYP MAX Recommended DC Operating ConditionsParameter Symbol MIN TYP MAX Units AC Timing Parameters and DiagramsIntel BUS Write Timing BTS = 0 / MUX = 1 Figure Intel BUS Read Timing BTS = 0 / MUX = 1 FigureMotorola BUS Timing BTS = 1 / MUX = 1 Figure 236 012103 Intel BUS Read Timing BTS = 0 / MUX = 0 Figure Motorola BUS Read Timing BTS = 1 / MUX = 0 Figure Parameter Symbol MIN TYP MAX Units Receive Side AC CharacteristicsAC CHARACTERISTICS-RECEIVE Side Receive Side Timing T1 Mode Figure Receive Side TIMING, Elastic Store Enabled T1 Mode Figure Receive Line Interface Timing Figure MAX Units Transmit AC CharacteristicsParameter Symbol MIN TYP E1Tsysclk = 8.192MHz Tsysclk = 16.384MHz Transmit Side TIMING, Elastic Store Enabled Figure Transmit Line Interface Timing Figure Mechanical Descriptions Product Preview DS21Q55 248 012103

Product Preview

E1 Mode

APPLICATION

RETURN LOSS

T1 Mode

information.