PCI11101-I/MXX

Overview

The Microchip PCI11101-I/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 2-lane (2x8GT/s) downstream port, certified for PCIe Gen 4 compliance. The device includes an integrated xHCI USB 3.2 Gen 2 host controller with 10Gbps PHY support. It operates within the industrial temperature range of -40°C to +85°C and is housed in a 132-pin DRQFN package.

Feature Summary

• PCIe Gen 4 Switch Fabric: 4-lane upstream and 2-lane downstream ports supporting up to 8GT/s line rates.
• Integrated USB Host Controller: xHCI compliant USB 3.2 Gen 2 host with 10Gbps PHY and HS/FS/LS support.
• Programmable I/O: Includes UARTs (RS232/RS485), SPI, SMBus, and multifunction GPIOs via a pin multiplexer.
• Power Management: Supports PCIe 3.1 LPSS L2 states and features integrated power-on reset with configurable under/over voltage protection.

Applications

• Math offload systems
• Vision intelligence and machine vision cameras
• Servers utilizing Next-Generation BMC without PCH

Procurement Notes

Verify the ordering suffix 'I' confirms the industrial temperature grade (-40°C to +85°C). Confirm the 'MXX' suffix corresponds to the 132-pin DRQFN package. Ensure compatibility with standard operating system abstractions for software integration. Check for specific errata sheets relevant to the silicon revision being procured.

Selection Notes

Select this component for embedded applications requiring high-bandwidth PCIe subsystems combined with native USB 3.2 connectivity. The integrated clock farm reduces BOM by requiring only a single 25MHz external crystal. Consider the industrial temperature rating if operation exceeds commercial limits. Verify that the 512-byte maximum payload size meets system throughput requirements.

Part Context

This part belongs to the Microchip PCI11101 family of PCIe switches with integrated USB hosts. The '-I' designation specifically denotes the industrial temperature variant, while '/MXX' identifies the 132-pin DRQFN package. Other variants may include commercial temperature ranges or tape-and-reel packaging options.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip sales offices for alternative components with similar PCIe lane counts and USB host integration capabilities.

FAQ

What is the maximum line rate supported by the PCI11101?

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 external clocks are required for operation?

Although multiple internal clocks are generated by an integrated clock farm, only a single-ended 25MHz clock or crystal and a PCIe reference clock are required externally.

Does the device support USB Type-C connections?

The datasheet specifies support for USB Type-A, M.2 breakout, or embedded connections for the USB 3.2 Gen 2 port, but does not explicitly list USB Type-C support in the general description.