PI2EQX5984ZLIEX

Product Databrief PI2EQX5984 5.0Gbps 4-Lane PCIe® 2.0 ReDriver™ with Equalization, Emphasis, & I2C Control Pericom Semiconductor’s 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/O’s between the Protocol ASIC to a switch fabric, across a backplane, or extends the signals across other distant data pathways on the user’s 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, Pericom’s PI2EQX5984 also provides power management Stand-by mode operated by a Bus Enable pin. Features • Up to 5.0Gbps PCI Express® 2.0 Serial ReDriver • Supporting 8 differential channels or 4 lanes of PCIe Interface • I2C 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 Block Diagram • Fine adjustment of electrical idle threshold via I2C • Single supply voltage, 1.2V ± 0.05V + − Output Controls Inputleveldetect tocontrollogic xyRx+ + xyRx- − xyTx+ + A xyTx- − B Equalizer Output Controls Equalizer Inputleveldetect tocontrollogic • Power down modes + xyTx+ • Industrial Temp support, -40°C ~ +85°C − xyTx- • Packaging: 72-contact TQFN, Pb-free & Green + xyRx+ − xyRx- Figure1 + − DataLaneRepeats4Times SELy_x Sy_x Dy_x Mode ControlRegisters &Logic SDA SCL RXD_x RES_x DE_x PD# LB# PCIe 2.0 ReDriver 4 X687 PI2EQ Blade Server Power Management I2CControl Blade Server PCIe 2.0 Cable Ax 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. www.pericom.com | 1-408-435-0800