PI7C9X2G404ELZXAEX

Overview

The PI7C9X2G404ELZXAEX is a PCI Express Gen 2 packet switch manufactured by Diodes Incorporated. It features one upstream port and four downstream ports, each supporting four lanes for a total of sixteen lanes. The device operates with a maximum clock frequency of 100 MHz and supports data rates up to 5 Gb/s per lane. It functions within a supply voltage range of 900 mV to 1.1 V, with a typical operating voltage of 1 V. The component dissipates up to 650 mW of power and exhibits a propagation delay of 6.5 ns. It is designed for operation between -40°C and +85°C and is housed in a 136-pin aQFN package.

Feature Summary

• Supports PCIe Gen 2 protocol with integrated physical layer circuitry including receiver detection and equalization.
• Includes an EEPROM interface for system configuration mapping to internal registers.
• Features comprehensive transaction layer capabilities such as TLP decapsulation, routing, and queue management.
• Provides advanced error reporting and virtual channel arbitration for reliable data transmission.

Applications

• High-performance server backplanes requiring multi-lane connectivity.
• Storage area network (SAN) infrastructure switches.
• Industrial computing systems needing robust PCIe expansion capabilities.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging type and reel specifications. Ensure compatibility with required environmental standards and humidity sensitivity levels before procurement. Confirm that the selected variant meets all electrical parameters for the intended application environment.

Selection Notes

Select this component when a 4-port, 4-lane PCIe Gen 2 switch is required. Consider the 136-pin aQFN package constraints for PCB layout. Evaluate power dissipation limits relative to thermal design capabilities. Verify that the 1 V supply voltage aligns with the system's power architecture.

Part Context

This part belongs to the PI7C9X2G404 family of Extreme Low Packet Switches from Diodes Incorporated. It serves as a bridge between host processors and multiple peripheral devices over PCIe links. The family includes variants with different pin counts and port configurations to suit diverse system architectures.

Replacement Considerations

Check for direct substitutes within the same product family that may offer different port configurations or packaging options. Ensure any replacement maintains compatibility with the existing EEPROM interface and register map if software migration is not planned.