USB5744-I/2GX01

Controllers Overview

The Microchip USB5744-I/2GX01 is a low-power, OEM-configurable USB 3.2 Gen 1 hub feature controller featuring 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. Power requirements include +3.3 V and +1.2 V supplies. It operates within commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges. Configuration is managed via SPI or SMBus interfaces.

Controllers Feature Summary

• Supports USB-IF Battery Charging revision 1.2 standards including DCP, CDP, and SDP profiles.
• Includes PortSwap functionality for configurable differential pair signal swapping.
• Features PHYBoost for programmable Hi-Speed drive strength and VariSense for receiver sensitivity control.
• Provides enhanced OEM configuration options through OTP or external SPI ROM.

Controllers Applications

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

Controllers Procurement Notes

Verify the specific suffix -I/2GX01 against official documentation to confirm package type and temperature grade. Confirm that the ordering suffix does not alter functional capabilities unless explicitly stated in the datasheet. Ensure compatibility with required configuration methods such as SPI or SMBus before procurement.

Controllers Selection Notes

Select this component for applications requiring USB 3.2 Gen 1 compliance with advanced power management features. Consider the integrated battery charging support if portable device connectivity is required. Evaluate the need for OEM configurability via OTP or SPI ROM versus default settings. Ensure the system design accommodates the 56-pin VQFN package thermal requirements.

Controllers Part Context

The USB5744 belongs to the Microchip USB5744 series of USB interface ICs. This series includes variants like the USB5742, which offers two downstream ports. The USB5744 specifically provides four downstream ports, making it suitable for higher-density hub applications compared to lower-port-count family members.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify cross-compatibility with other Microchip hub controllers based on pinout and firmware requirements.

Controllers FAQ

How is the SPI/SMBus mode configured?

The mode is determined by pull-up resistors on the SPI_DO and SPI_CLK pins. Detecting 10 kΩ pull-ups configures the pins for SMBus Slave Mode, while no pull-ups configure them for SPI Mode.

What is the function of the CFG_BC_EN strap?

The CFG_BC_EN strap enables battery charging on specific downstream ports. Different resistor values on this pin select which ports (1 through 4) support charging functions.

How does PortSwap benefit PCB design?

PortSwap allows per-port programmability of USB differential-pair pin locations. This enables direct alignment of signals to connectors, avoiding uneven trace lengths or crossing of differential signals on the PCB.