PCI11414/PMX

Overview

The Microchip PCI11414/PMX is a single-chip PCIe switch integrating a USB 3.2 Gen 2 host controller, Ethernet MAC, and programmable I/O. It features a 4-lane (4x8GT/s) upstream port and a 1-lane (1x8GT/s) downstream port, certified for PCIe Gen 4 compliance. The device includes an xHCI USB 3.2 Gen 2 host controller with two 10Gbps PHYs and four USB 2.0 HS/FS/LS PHYs. An integrated 2.5Gbps Ethernet MAC supports RGMII, SGMII, and SGMII+ interfaces. The component operates within a temperature range of -40°C to +85°C and is housed in a 164-pin DRQFN package.

Feature Summary

• PCIe Gen 4 Switch Fabric: 4-lane upstream and 1-lane downstream ports supporting up to 8GT/s line rates.
• USB 3.2 Gen 2 Host Controller: Integrated xHCI controller with Type-C and Type-A port support.
• Ethernet Connectivity: 2.5Gbps MAC with RGMII/SGMII/SGMII+ interface options.
• Programmable I/O: Pin multiplexer supporting SMBus, SPI, UART, and GPIO functions.

Applications

• Single-Board Computers (SBC)
• AIoT Edge Computing
• Industrial PC (IPC)
• Edge Appliances
• Storage Extensions

Procurement Notes

Verify the specific suffix configuration when ordering. The base model PCI11414/PMX denotes the standard commercial temperature grade (0°C to +70°C). For industrial applications requiring -40°C to +85°C operation, select the variant with the '-I' suffix (PCI11414-I/PMX). Confirm whether tape and reel packaging is required by appending 'T' to the part number. Ensure compatibility with the 164-pin DRQFN footprint during procurement planning.

Selection Notes

Select this component for embedded systems requiring high-bandwidth PCIe expansion alongside native USB and Ethernet connectivity. The integrated clock generation allows for a reduced bill of materials by utilizing a single external 25MHz crystal. Designers should evaluate the pin multiplexer capabilities to map specific I/O functions like UART or SMBus to available package pins based on layout constraints. Verify power supply requirements for the internal 1.1V and external 3.3V rails.

Part Context

The PCI11414 belongs to Microchip's family of integrated interface controllers designed for embedded applications. It consolidates multiple peripheral controllers into a single silicon die, reducing board space and complexity compared to discrete solutions. The PMX suffix specifically identifies the 164-lead Very Thin Plastic Quad Flat, No Lead package with dual rows and punch singulation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult Microchip technical support or authorized distributors for cross-reference recommendations if the PCI11414/PMX is unavailable.