PI7C9X2G312GPANJEX

Overview

The PI7C9X2G312GPANJEX is a 12-lane PCI Express Gen 2 Packet Switch from the GreenPacket family, manufactured by Diodes Incorporated. It features one upstream port supporting x4 operation and two downstream ports also supporting x4 operation. The device complies with PCI Express Base Specification Revision 2.1 and CEM Specification Revision 2.0. It operates within an industrial temperature range of -40°C to +85°C and utilizes a 196-pin LBGA package measuring 15mm x 15mm. Typical power dissipation in L0 normal mode is 1.3 W, including clock buffer power. The component supports up to 512-byte maximum payload size and provides 150ns typical latency for unblocked packets.

Feature Summary

• Supports flexible link configurations with one x4 upstream port and two x4 downstream ports for fan-out or expansion applications.
• Integrates advanced power management capabilities including Link Power Management (LPM) states L0 through L3 Ready and Active State Power Management (ASPM).
• Provides enhanced switching features such as peer-to-peer switching between downstream ports and support for Store-and-Forward modes alongside default Cut-through operation.
• Includes integrated 100MHz clock buffers for each downstream port and supports Extended Virtual Channel capability with independent Traffic Class mapping.

Applications

• Network Attached Storage (NAS) and storage platforms
• Server infrastructure and Host Bus Adapters (HBA)
• Embedded systems and Industrial Personal Computers (IPC)
• Wireless Access Points and wired/wireless networking equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details. The 'NJEX' suffix typically indicates tape and reel packaging quantities. Ensure compatibility with system requirements regarding the industrial temperature range and RoHS compliance standards before finalizing procurement orders.

Selection Notes

Select this component when a three-port PCIe Gen 2 switch with x4 lane width per port is required. Consider the 1.3W typical power dissipation and 196-pin LBGA package dimensions for thermal and board space planning. Verify that the application benefits from the integrated clock buffers and specific power management states like ASPM L1.1.

Part Context

This part belongs to the Pericom GreenPacket family of PCIe switches, designed for low-power and lead-free system requirements. It serves as a bridge for expanding PCIe connectivity in embedded, storage, and networking environments. The device integrates proprietary power-saving technologies to meet efficiency standards while maintaining high-performance data throughput.

Replacement Considerations

The datasheet lists PI7C9X2G312GPBNJEX as a variant with the same electrical specifications but potentially different packaging. No other direct cross-model substitutes are documented in the provided source material.