USB5744BT/2GX01

Controllers Overview

The USB5744BT/2GX01 is a low-power, OEM-configurable USB 3.2 Gen 1 hub feature controller with four downstream ports. It supports SuperSpeed (5 Gbps), Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) data rates. The device integrates an embedded 8051 microcontroller with 64 KB ROM, 8 KB RAM, and 8 KB OTP memory for firmware execution. It complies with USB-IF Battery Charging revision 1.2 standards, supporting DCP, CDP, and SDP profiles. Available in a 56-pin VQFN package, it operates within commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges.

Controllers Feature Summary

• Integrates PortSwap technology for programmable differential-pair pin swapping to optimize PCB trace alignment.
• Includes PHYBoost functionality to provide programmable Hi-Speed signal drive strength for signal integrity restoration.
• Features VariSense capability to control USB receiver sensitivity for operation in sub-optimal system environments.
• Supports configuration via internal default settings, external SPI ROM, or One-Time Programmable (OTP) memory.

Controllers Applications

• Standalone USB Hubs
• Laptop Docks
• PC Motherboards
• Multi-function USB 3.2 Gen 1 Peripherals

Controllers Procurement Notes

Verify the specific suffix 'BT/2GX01' against the official Microchip datasheet DS00001855J to confirm exact ordering requirements. Ensure that the selected package variant matches the required thermal and environmental specifications for the intended deployment environment.

Controllers Selection Notes

Select this component when a compact, low-power USB 3.2 Gen 1 hub solution with integrated processing is required. Consider the 56-pin VQFN package for space-constrained designs. Evaluate the need for custom firmware storage options, such as OTP or SPI ROM, based on system configuration flexibility requirements.

Controllers Part Context

The USB5744 series represents Microchip's smart hub controllers, combining USB hub functionality with an embedded microcontroller. This integration reduces system complexity by eliminating the need for a separate MCU for basic hub management tasks. The series is designed to support advanced features like port swapping and battery charging emulation within a single IC.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing system designs before considering alternative components.

Controllers FAQ

How does the USB5744 handle battery charging?

The device supports USB-IF Battery Charging revision 1.2, enabling detection and handshake for Dedicated Charging Ports (DCP), Charging Downstream Ports (CDP), and Standard Downstream Ports (SDP).

What configuration methods are supported?

Configuration can be set via internal default settings, programmed into the 8 KB One-Time Programmable (OTP) ROM, or loaded from an external SPI ROM.

What is the function of PortSwap?

PortSwap allows per-port programmability of USB differential-pair pin locations, enabling direct alignment of signals to connectors to avoid uneven trace lengths or crossings on the PCB.