product databrief www.pericom.com | 1-408-435-0800 PI2EQX5984 5.0gbps 4-lane pcie ? 2.0 redriver? with equalization, emphasis, & i 2 c control features ? up to 5.0gbps pci express ? 2.0 serial redriver ? supporting 8 differential channels or 4 lanes of pcie interface ? i 2 c configuration controls (3.3v tolerant) ? adjustable receiver equalization and transmitter de-emphasis and output levels ? variable input an output termination ? 1:2 channel broadcast ? channel loop-back/mux and demux mode ? electrical idle fully supported ? receiver detect and individual output control ? fine adjustment of electrical idle threshold via i 2 c ? single supply voltage, 1.2v 0.05v ? power down modes ? industrial temp support, -40c ~ +85c ? packaging: 72-contact tqfn, pb-free & green pericom semiconductors PI2EQX5984 is a low power, pcie ? compliant signal redriver?. the device provides programmable equalization, amplification, and de-emphasis by using 8 select bits, to optimize performance over a variety of physical mediums by reducing inter-symbol interference. PI2EQX5984 supports eight 100-ohm differential cml data i/os between the protocol asic to a switch fabric, across a backplane, or extends the signals across other distant data pathways on the users platform. the integrated equalization circuitry provides flexibility with signal integrity of the pci express signal before the redriver?, whereas the integrated de-emphasis circuitry provides flexibility with signal integrity of the signal after the redriver. in addition to providing signal re-conditioning, pericoms PI2EQX5984 also provides power management stand-by mode operated by a bus enable pin. block diagram + ? + ? + ? + ? + ? + ? a b xytx- xytx+ xyrx+ xyrx- equalizer equalizer input level detec t to control logic output controls output controls input level detec t to control logic data lane repeats 4 t imes control registers & logic power management i 2 c control sel y_x sy_x dy_x de_x pd# sda scl mode lb# res_x rxd_x ax xytx- xytx+ xyrx+ xyrx- figure1 redrivers with emphasis and equalization signal conditioning technology ensure the integrity of high-frequency pcie signals by opening closed signal eyes to recover data and meet strict compliance testing requirements. increased signal margin also supports longer drive lenghts over even low-quality cables. pcie 2.0 cable blade server blade server pcie 2.0 redriver figure1 pi2eqx6874
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