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Microchip Technology PCI11400C Single-Chip PCIe Switches

Microchip Technology PCI11400C Single-Chip PCIe Switches are integrated switches that combine a USB 3.2 Gen 2 host controller with programmable I/O. The Microchip PCI11400Cs PCIe physical interfaces include a 4‑lane (4×8GT/s) upstream port and a 1‑lane (1×8GT/s) downstream port. Designed for embedded systems requiring higher PCIe bandwidth, the device supports line rates up to 8GT/s. The upstream PCIe interface can operate over one or multiple lanes, allowing flexibility in system architecture. The PCI11400C delivers full PCIe compliance from the external PHY interfaces through the switch fabric and endpoint controllers.

The device supports PCIe Precision Time Measurement (PTM), enabling accurate timing exchange between components as defined in the PCI Express Base Specification, Revision 5.0, V1.0. PTM enables devices to synchronize local clocks with a shared time reference, known as PTM Master Time.

Integrated within the Microchip PCI11400C is a USB‑IF and xHCI‑compliant USB 3.2 Gen 2 host controller, providing: two USB 3.2 Gen 2 (USB Type‑C®) ports and three USB 2.0 HS/FS/LS (USB Type‑A) ports. USB Type‑C support includes management of the CC1 and CC2 configuration channels. The device also offers Overcurrent Sense (OCS) and Vbus Port Control.

A programmable pin multiplexer enables flexible mapping of I/O functions to package pins. Designers can use the default pin configuration or customize signal routing to fit specific application needs. Supported functions include USB‑related signals, GPIO, and SMBus, accessible through a dedicated PCIe Endpoint Controller. The PCI11400C requires multiple internal clock domains, which are all generated by an integrated clock farm. Externally, only a single‑ended 25MHz clock or crystal is needed, along with a PCIe reference clock.

The device presents itself to software through standard abstractions supported by major operating systems. The Microchip PCI11400C is offered in a 132‑pin VQFN‑DR package and is available across several temperature grades, including commercial (0°C to +70°C), industrial (-40°C to +85°C), and automotive Grade 3 (-40°C to +85°C).

Features

  • Integrated PCIe (8GT/s) switching fabric, 512-byte maximum payload size
  • Integrated PCIe physical interfaces
    • 4-lane (4x8GT/s) upstream port
    • Allows single, dual, or four lane links
    • 1-lane (1x8GT/s) downstream port
  • Integrated USB 3.2 Gen 2 (10Gbps) physical interfaces
  • Integrated xHCI USB 3.2 Gen 2 (10Gbps) USB host controller
    • 2x 10Gbps Gen 2 PHY
    • 4x USB HS/FS/LS PHY
    • Multiple configuration options for USB Type-C or Type-A
  • Two external (+3.3V and +1.1V) power supplies
  • Comprehensive power management features PCIe 3.1 Low Power Sub States (LPSS) - L2 (with auxiliary power supply), LPSS L1.1 (snooze), and L1.2 (off)
  • Power and I/O
    • Integrated power-on reset circuit with configurable under/over-voltage protection
    • Latch-up performance exceeds 150mA per EIA/JESD78, Class II
    • JEDEC Class 2 ESD performance
  • UARTs
    • RS232/RS422/RS485
    • Auto-direction control
    • Standard and advanced speed support
    • Basic or comprehensive signal support
  • Multifunction GPIOs
  • Programmable pin multiplexer
  • Ability to use a low-cost 25MHz crystal or clock for reduced BOM
  • PCIe Precision Time Measurement (PTM)
  • Support for common reference clock and separate reference clocks (SRNS and SRIS)
  • SPI peripheral interface
  • SMBus target interface
  • SMBus controller interface
  • JTAG TAP
  • PVT sensor
  • Available in commercial, industrial, and AEC-Q100 Grade 3 temperature ranges
  • Lead-free, RoHS-compliant, 132-pin VQFN-DR package

Applications

  • Single-Board Computers (SBCs)
  • Mobility hybrid systems
  • Industrial PCs (IPCs)
  • Edge gateways
  • Storage extensions

Specifications

  • 2.97V to 3.63V supply voltage range for 3.3V supplies
  • Variable supply voltage ranges
    • 2.97V to 3.63V for 3.3V supplies
    • 2.25V to 2.75V for 2.5V supplies
    • 1.62V to 1.98V for 1.8V supplies
    • 1.09V to 1.21V for 1.1V supplies
  • Reset current
    • 187.2mA for 1.1V supplies
    • 15.48mA for 3.3V supplies
  • Sleep current
    • 329mA for 1.1V supplies
    • 42.8mA for 3.3V supplies
  • Idle current
    • 675mA for 1.1V supplies
    • 112mA for 3.3V supplies
  • USB active current ranges
    • 810mA to 1237mA for 1.1V supplies
    • 125mA to 148mA for 3.3V supplies
  • PCIe active current
    • 746mA for 1.1V supplies
    • 116mA for 3.3V supplies
  • 0ms to 5ms power supply turn-on time range
  • +125°C maximum junction temperature
  • Ambient operating temperature ranges in still air
    • 0°C to +70°C for the commercial version
    • -40°C to +85°C for the industrial version
    • -40°C to +85°C for Automotive Grade 3 version
  • 3kV Human Body Model (HBM) ESD protection

Internal Block Diagram

Block Diagram - Microchip Technology PCI11400C Single-Chip PCIe Switches

Related Controllers

Microchip Technology PCI11400 PCIe Switch w/ USB 3.2 Host Controller

Combines a USB 3.2 Gen 2 host controller and customizable I/O.

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Publicado: 2026-03-11 | Actualizado: 2026-03-12