144x144 3.2 Gbps Crosspoint Switch with Integrated CDRs, Input Equalization & Pre-Emphasis M21156 Most Highly Integrated, Highest Performance, Lowest Power Crosspoint Switch Reduces System Cost and Complexity Built on three generations of industry-leading crosspoint switches, the M21156, designed for today's demanding telecom and datacom applications, is a low-power CMOS, high-speed 144x144 crosspoint switch with 144 independent CDRs, and robust signal conditioning circuits for driving and receiving high-speed signals through backplanes. The device consumes as low as 17 W of power (typical) with all channels and CDRs operational. In addition, the PowerScalerTM features offer dynamically scalable switch settings to further reduce power consumption. Unused portions of the core can be automatically (SmartPowerTM) or manually turned off, without effecting the operation > K E Y F E AT U R E S > Integrated per-channel multi-rate CDRs, with bit rates of 1.0-3.2 Gbps > PowerScalerTM for further power reduction based on system needs > Programmable input equalizer to remove deterministic jitter (ISI) > Built-in system test features such as JitterMeterTM and PRBS Tx/Rx > Programmable output preemphasis for driving long board traces and cables > Supports SONET, GbE, 10GbE, Fibre Channel (1x, 2x, 10x) and Infiniband applications > Performance exceeding SONET > Programmable input equalizarequirements with 0.65 UI tion with CDR for random and jitter tolerance and 1.5 mUI deterministic jitter reduction (rms) jitter generation > Low power consumption of 17 W, nearly 60% power savings compared to an equivalent circuit with external CDRs of the remaining channels. Each input has a dedicated high-jitter tolerant, low-jitter The PE provides a boost of the high frequency content generation CDR with internal loop filter. All CDRs use a of the output signal, such that the data eye remains open common, single frequency reference clock (19.44 MHz) for after passing through a long interconnect of PCB traces internal calibration and acquisition. Each CDR operates and cables. There are two amplitude settings and two independently at any data rate from 1.0 to 1.6 Gbps, or duration settings that can be selected on a global basis. 2.0 to 3.2 Gbps. The device supports data rates from 0 to 3.2 Gbps on The signal conditioning features of the M21156 include each channel, allowing any combination of SONET, Fibre per channel programmable input equalizer (IE) and output Channel (1x, 2x, 10x), InfiniBand, Gigabit Ethernet and pre-emphasis (PE) circuits. The IE removes ISI jitter, which parallel 10 Gbps Ethernet traffic. For applications that is usually caused by PCB skin effect losses. The IE circuit do not require an integrated CDR, the M21151, 144x144 opens the input data eye in applications where long PCB crosspoint switch with input equalization and traces and cables are used. There are four settings avail- pre-emphasis can be used. able for the input equalizer, allowing flexibility in adjusting the equalization level on a per-channel basis. > xEnRx< 0> Data Perror<0> ClkT xRef<0> PL L xRstRx< 0> PRBSRxErr[7 :0] 23 - 1 2 PRBS RX Clk DiRx P/N<0> CDR ClkR xP/N[0] ClkT xP/N<0> Trig<0> xEnTx<0> PRBS TX 2 23 - 1 OutP/N< 71: 0> PRBS Tx/Rx, C ell 0 DoT xP/N<0> RefClk InP/N<0> CDR InP/N<1 > CDR OutP/N<0> OutP/N<1> 144 x 144 Differential Crosspoint Core PCML Input Buffer and Programmable Input Equalizer InP/N< 71> PCML Output Buffer and Programmable Output Pre-emphasis Ou tP/N< 71 > CDR xO utDis xInDis xDS/SClk A[9:0] Switch State Read Bus D[5:0] D[6]/Di Parallel - Serial D[7]/Do R/xW Interface and xCS General xTest Registers xRst Ser/xPar Active Configuration Latch (ACL) Switch State Write Bus xEn Rx<1 > xSet OutP/N< 71: 0> Input Configuration Latch (ICL) xRstRx< 1 > DoTxP/N<1 > xEn Tx<1> Trig<1 > PRBS TX 2 23 - 1 Perror<1> PRBSRxErr[7:0] 23 - 1 2 PRBS RX Data Clk CDR DirxP/N<1> ClkTxP/N<1> ClkRxP/N<1 > ClkTxR ef<1 > PL L PR BS Tx/Rx, C ell 1 M21156 Block Diagram Product Features Applications * Fiber-optic telecom systems (OC-48/OC-48 FEC) * Large N x N cascaded switch fabrics, up to 33 Terabits/second * Telecom & datacom switches * DWDM switches * Storage area network (SAN) switches (1x, 2x, and 10x Fibre Channel) * Infiniband switches * 10 GbE parallel and GbE networks * Packet switching * High-speed automated test equipment www.mindspeed.com/salesoffices General Information: (949) 579-3000 Headquarters - Newport Beach 4000 MacArthur Blvd., East Tower Newport Beach, CA 92660-3007 21156-BRF-001-A M02-0750 (c) 2003 Mindspeed TechnologiesTM. 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