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PI2EQX4402D (Obsolete)

2-lane PCIe ReDriver with Equalization and De-emphasis

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Product Description

Pericom Semiconductor’s PI2EQX4402D is a low power, PCI Express compliant signal Re-Driver. The device provides programmable equalization, amplification, and de-emphasis by using 7 select bits, SEL[0:6], to optimize performance over a variety of physical mediums by reducing Inter-symbol interference. PI2EQX4402D supports four 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 Re-Driver. Whereas the integrated de-emphasis circuitry provides flexibility with signal integrity of the PCI Express signal after the Re-Driver.

A low-level input signal detection and output squelch function is provided for all four channels. Each channel operates fully independantly. When a channel is enabled (EN_x=1) and operating, that channel input signal level (on xl+/-) determines whether the output is enabled. If the input level of the channel falls below the active threshold level (Vth-) then the output driver switches off, and the pin is pulled to VDD via a high impedance resistor.

In addition to providing signal re-conditioning, Pericom’s PI2EQX4402D also provides power management Stand-by mode operated by an Enable pin. A differential clock buffer is provided for test and other system requirements. This clock function is not used by the data channels.


  • Two High Speed PCI Express lanes
  • Supports PCI Express data rates (2.5 Gbps) on each lane
  • Adjustable Transmiter De-Emphasis & Amplitude
  • Adjustable Receiver Equalization
  • Input Signal Level Detect & Output Squelch on all Channels
  • Two Spread Spectrum Reference Clock Buffer Outputs
  • 100Ω Differential CML I/O’s
  • Low Power (100mW per Channel)
  • Standby Mode – Power Down State
  • VDD Operating Range: 1.8V +/-0.1V
  • Packaging (Pb-free & Green): 84-ball LFBGA (NB84)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 4
Data Rate (Gbps) 2.5
Lanes/Ports 2
Output Swing Max (mV) 1600
Programming Interface(s) I2C, Pinstrap

Technical Documents

Evaluation Boards and User Guides

Design tool model software

Recommended Soldering Techniques


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

Request Documents
Orderable Part Number Status Package Environmental Compliance Packing Request Samples
Qty. Carrier
PI2EQX4402DNBE Obsolete LFBGA-84 LFGP 260 TRAY
PI2EQX4402DNBEX Obsolete LFBGA-84 LFGP 2000 T&R

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free