A product Line of Diodes Incorporated PI2EQX5904 5.0Gbps 4-Lane PCIe 2.0 ReDriver with Equalization & Emphasis Features Description Up to 5.0Gbps PCIe 2.0 Serial ReDriver Diodes PI2EQX5904 is a low power, PCIe compliant signal Re- Supporting 8 differential channels or 4 lanes of PCIe Interface Driver. The device provides programmable equalization, am - Pin strapped and I2C configuration controls plicfi ation, and de-emphasis by using 8 select bits, to optimize 2 (3.3V tolerant I C) performance over a variety of physical mediums by reducing Adjustable receiver equalization Inter-symbol interference. Adjustable transmitter amplitude and de-emphasis PI2EQX5904 supports eight 100-Ohm Differential CML data Variable input an output ter mination I/Os between the Protocol ASIC to a switch fabric, across a back- 1:2 channel broadcast plane, or extends the signals across other distant data pathways Channel loop-back/Mux and Demux Mode on the users platform. PI2EQX5904 compensates signal inser- Low Power: 660mW, Typical tion loss at designated BER issued by PCIe2.0 endpoint device. Electrical Idle fully supported e iTh ntegrated equalization circuitry provides flexibility with Receiver detect and individual output control signal integrity of the PCIe signal before the ReDriver, whereas Single supply voltage, 1.2V 0.05V the integrated de-emphasis circuitry provides flexibility with sig - Power down modes nal integrity of the signal after the ReDriver. Industrial Temp support, -40C ~ +85C In addition to providing signal re-conditioning, Diodes PI- Packaging: 100-contact LBGA, Pb-free & Green 2EQX5904 also provides power management Stand-by mode op- erated by a Power Down pin. Block Diagram Figure 1 + Output Input level detect Controls to control logic + xyRx+ xyTx+ + xyRx- Equalizer xyTx- PCIe 2.0 A xyTx+ + ReDriver Equalizer xyRx+ + B xyTx- xyRx- Output Input level detect + Blade Server Controls to control logic Blade Server Data Lane Repeats 4 Times PCIe 2.0 Cable SELy x Mode Sy x Control registers LB Dy x RXD x & logic RES x DE x Power PD Management SDA 2 I C Control Ax SCL www.diodes.com October 2019 PI2EQX5904 1 Diodes Incorporated Document Number DS42334 Rev 1-3 PI3EQX6701PI3EQX7711A product Line of Diodes Incorporated PI2EQX5904 Pin Configuration (Top-Side View) 4 56 7 89 10 2 3 1 - VDD VDD B0TX- B0TX+ VDD SCL SDA VDD B0RX + B0RX A A1TX+ B A1RX+ A0TX- GN D GN D GND GND - DE A VDD A0RX - A0TX+ GND GN D A1TX PD C A1RX- GND GND A0RX+ NC VDD D VDD B1TX + B1TX- D2 A NC VDD B1RX- B1RX + VDD RXD AS1 A SIG A RX50 A S0 A E SEL0 A SEL1 A SEL2 A D0 A D1 A LB SEL1 B SEL0 B A1 SEL2 B F RX50 B SIG B S1 B RXD B S0 B - VDD VDDA2TX+ A2TX G VDD - A2RX+ MODE D0 B A2RX VDD - B2RX+ A0 B3RX GN D GN D H B2TX+ GND GND - DE B B3TX B2RX- B3RX+GND GN D J B2TX- GND GND RESET D1 B B3TX+ VDD VDD A3TX+ K VDD A3RX+ A3RX- D2 B A4 A3TX - VDD www.diodes.com October 2019 PI2EQX5904 2 Diodes Incorporated Document Number DS42334 Rev 1-3