PCI11400/MXX

Overview

The Microchip Technology PCI11400/MXX is a single-chip PCIe switch integrating a USB 3.2 Gen 2 host controller and programmable I/O. It features a 4-lane (4x8GT/s) upstream port and a 1-lane (1x8GT/s) downstream port, supporting PCIe Gen 4 compliance with a maximum line rate of 8GT/s. The device includes an xHCI-compliant USB 3.2 Gen 2 host controller providing one USB Type-C port and three USB Type-A ports. It utilizes a 132-pin DRQFN package and operates within the commercial temperature range of 0°C to +70°C.

Feature Summary

• PCIe Gen 4 Switch Fabric: Supports up to 8GT/s line rates with a 512-byte maximum payload size.
• Integrated USB Host Controller: Includes xHCI USB 3.2 Gen 2 controller with two 10Gbps PHYs and four USB HS/FS/LS PHYs.
• Programmable I/O Multiplexer: Maps SMBus, SPI, UART, and GPIO functions to package pins for flexible system design.
• Power Management: Features comprehensive power management including PCIe 3.1 Low Power Sub States (LPSS) L2.

Applications

• Single-Board Computers (SBC)
• Industrial PC (IPC)
• Edge gateways
• Storage extensions

Procurement Notes

Verify the ordering suffix 'MXX' corresponds to the 132-pin DRQFN package. Confirm the absence of the 'T' suffix indicates standard tray packaging rather than tape and reel. Ensure the temperature grade matches the specific application requirements, as the base model denotes commercial grade (0°C to +70°C).

Selection Notes

Select this component when a compact solution combining high-bandwidth PCIe switching with USB 3.2 connectivity is required. The integrated clock farm reduces external component count by requiring only a single 25MHz crystal. Consider the programmable pin multiplexer if custom signal mapping for I/O functions is necessary for the target board layout.

Part Context

The PCI11400/MXX belongs to the PCI11400 family of PCIe switches with integrated USB hosts. The '/MXX' suffix specifically identifies the 132-pin DRQFN package variant. Other variants in the family include industrial temperature grades (-40°C to +85°C) and tape-and-reel options, distinguished by additional letters in the part number.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip sales offices or authorized distributors for current availability and potential alternative components within the same product family.

FAQ

What is the maximum line rate supported by the PCI11400?

The device supports a maximum line rate of 8GT/s and is certified against the GEN4 compliance program as defined in the PCIe Revision 4.x specifications.

How many USB ports does the integrated host controller provide?

The integrated xHCI USB 3.2 Gen 2 host controller provides one USB 3.2 Gen 2 (USB Type-C) port and three USB 2.0 HS/FS/LS (USB Type-A) ports.

Does the PCI11400 require multiple external clocks?

No, the device generates all required internal clock domains via an integrated clock farm. Only a single-ended 25MHz clock or crystal and a PCIe reference clock are required externally.