Diodes Incorporated
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2.5/5.0Gbps 4-lane PCIe 2.0 ReDriver with Equalization & Emphasis

Product Description

The PI2EQX5964 (or 5904) is a low power, PCIe® compliant signal redriver also suitable for other high speed serial signals such as serdes backplane and non protocol specific protocols. 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.

PI2EQX5964 supports eight 100W 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 PI2EQX5964 also provides power management Stand-by mode operated by a Bus Enable pin.

Target markets for this ReDriver are networking, embedded, industrial, server and storage applications, including non-protocol- specific and high-speed signal applications.


  • 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
  • Increased output drive for longer trace and cable applications
  • 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 I2C
  • Single supply voltage, 1.2V ± 0.05V
  • Power down modes
  • Industrial Temp support, -40°C ~ +85°C
  • Packaging: 56-contact TQFN, Pb-free & Green

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 8
Data Rate (Gbps) 2.5, 5
Lanes/Ports 4
Output Swing Max (mV) 1100
Programming Interface(s) I2C, Pinstrap

Related Content


Technical Documents

Design tool model software

Application Information

Evaluation Boards and User Guides

Recommended Soldering Techniques


Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2328 2018-04-12 2018-10-12 Device End of Life for tray packaging only