USB5906C-I/KD

Controllers Overview

The USB5906C-I/KD is a low-power, OEM-configurable USB 3.1 Gen 1 hub controller featuring six downstream ports and a single upstream USB Type-C port. It supports SuperSpeed (5 Gbps), Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) data rates. The device integrates Battery Charging Revision 1.2 support for DCP, CDP, and SDP profiles, alongside an internal Hub Feature Controller for I2C/SPI/GPIO bridging. Configuration options include OTP ROM, SPI ROM, or SMBus. It operates within commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges in a 100-pin VQFN package.

Controllers Feature Summary

• Native USB Type-C support with integrated multiplexer and PHY power management
• USB-IF Battery Charging Rev 1.2 compliance with multiple charging profile emulation
• Internal Hub Feature Controller enabling USB-to-I2C/SPI/GPIO bridge functionality
• Programmable signal integrity features including PortSwap, PHYBoost, and VariSense

Controllers Applications

• Standalone USB Hubs
• Laptop Docks
• PC Motherboards
• Multi-function USB 3.1 Gen 1 Peripherals

Controllers Procurement Notes

Verify the specific suffix 'I' denotes the industrial temperature range (-40°C to +85°C) as opposed to the commercial variant. Confirm the 'KD' suffix corresponds to the 100-pin VQFN package type. Ensure the ordering part number matches the exact datasheet revision required for your design implementation.

Controllers Selection Notes

Select this component when a single upstream Type-C connection is required to expand into six downstream legacy USB ports. Consider the internal Hub Feature Controller if system monitoring via I2C or GPIO is needed without external microcontrollers. Verify that the available configuration straps meet initial hardware requirements before opting for external SPI or OTP programming.

Controllers Part Context

The USB5906C belongs to Microchip's SmartHub family of USB 3.1 Gen 1 controllers. It shares architectural similarities with the USB5806C but adds native Type-C upstream support. The 'I' suffix indicates industrial grade operation, while 'KD' specifies the 100-pin VQFN package. It serves as a bridge between modern Type-C hosts and legacy USB peripherals.

Controllers Replacement Considerations

Public confirmed substitute: USB5806C-I/KD (Commercial grade, no native Type-C upstream).

Controllers FAQ

How does the USB5906C manage power consumption for the USB 3.1 Gen 1 PHY?

The USB 3.1 Gen 1 PHYs are disabled until a valid USB Type-C attach is detected, which saves idle power when no connection is present.

What battery charging standards are supported by the downstream ports?

The device supports USB-IF Battery Charging Revision 1.2, including Dedicated Charging Port (DCP), Charging Downstream Port (CDP), and Standard Downstream Port (SDP) profiles.

Can the differential pair signals be swapped on the PCB?

Yes, the PortSwap feature allows per-port programmability to swap USB 2.0 differential pair signals, helping to avoid uneven trace lengths or crossings on the PCB.