PI2EQX5984ZLE

Signal Buffers, Repeaters, Splitters Overview

The PI2EQX5984ZLE is a 5.0Gbps 4-lane PCIe 2.0 ReDriver manufactured by Diodes Incorporated, formerly Pericom Semiconductor. It supports eight differential channels or four lanes of PCIe interface with I2C configuration controls that are 3.3V tolerant. The device operates on a single supply voltage of 1.2V ± 0.05V and supports industrial temperature ranges from -40°C to +85°C. Key electrical features include adjustable receiver equalization, transmitter de-emphasis, output levels, variable input/output termination, and fine adjustment of the electrical idle threshold via I2C. It is packaged in a 72-contact TQFN.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides programmable equalization, amplification, and de-emphasis using select bits to optimize performance across various physical mediums and reduce inter-symbol interference.
• Supports eight 100-Ohm Differential CML data I/Os for signal transmission between Protocol ASICs and switch fabrics or across backplanes.
• Integrates equalization circuitry for pre-redriver signal integrity and de-emphasis circuitry for post-redriver signal integrity.
• Includes power management Stand-by mode operated by a Bus Enable pin and supports Electrical Idle fully.

Signal Buffers, Repeaters, Splitters Applications

• PCIe 2.0 Cable extensions
• Blade Server interconnects

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify component authenticity through authorized Diodes Incorporated distributors or verified channel partners. Confirm RoHS compliance and Pb-free status against current manufacturing standards. Check for obsolescence notices as the product line may have successor models. Ensure packaging specifications match the 72-contact TQFN requirement for your assembly process.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring 5.0Gbps PCIe 2.0 signal regeneration over extended distances or poor quality cables. Consider the 1.2V supply voltage constraint and 3.3V tolerant I2C interface for system compatibility. Evaluate the need for adjustable equalization and de-emphasis to compensate for specific PCB trace losses or backplane characteristics.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the PCIe ReDriver family designed for high-speed serial interface signal conditioning. It addresses signal integrity challenges in PCIe 2.0 environments by actively re-conditioning signals to meet strict compliance testing requirements and opening closed signal eyes.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Check for newer revisions or equivalent parts from Diodes Incorporated if the PI2EQX5984ZLE is discontinued. Verify pinout and register compatibility before substituting with other 4-lane PCIe redrivers.

Signal Buffers, Repeaters, Splitters FAQ

How does the PI2EQX5984 handle signal integrity?

It uses integrated equalization and de-emphasis circuitries to reduce inter-symbol interference and open closed signal eyes, ensuring compliance with PCIe 2.0 standards.

What is the operating supply voltage?

The device operates on a single supply voltage of 1.2V ± 0.05V.

Can the electrical idle threshold be adjusted?

Yes, the electrical idle threshold can be finely adjusted via I2C control.