CYUSB3304-68LTXC

Application Specific Microcontrollers Overview

The CYUSB3304-68LTXC is a USB 3.2 Gen 1 hub controller compliant with the USB 3.0 specification revision 1.0, supporting data rates up to 5 Gbps on all ports. It features four downstream (DS) ports and integrates an ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and battery charging control. The device includes integrated termination, pull-up, and pull-down resistors, reducing bill of materials. It supports USB 2.0 backward compatibility, SS and USB 2.0 link power management, and dedicated High-Speed transaction translators.

Application Specific Microcontrollers Feature Summary

• Four USB 3.0-compliant downstream ports supporting 5 Gbps, HS (480 Mbps), FS (12 Mbps), and LS (1.5 Mbps).
• Integrated ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM for firmware execution and configuration.
• Supports BC v1.2 enhanced battery charging, ghost charging, and ACA-Dock functionality.
• Includes shared link capability for embedded applications, allowing simultaneous connection of embedded SS and removable USB 2.0 devices.

Application Specific Microcontrollers Applications

• Standalone hubs
• PC and tablet motherboards
• Docking stations
• Hand-held cradles

Application Specific Microcontrollers Procurement Notes

Verify the package type matches the design requirements; this model uses a 68-pin QFN (8 × 8 × 1.0 mm). Confirm that the ordering suffix corresponds to the desired temperature range and packaging format as defined in the Infineon datasheet. Ensure I2C EEPROM or eFuse configuration is properly set if custom VID/PID or port configurations are required.

Application Specific Microcontrollers Selection Notes

Select this component when four SuperSpeed downstream ports are required with integrated battery charging support. The CYUSB3304 supports pin-strapping for configuration options such as vendor ID, charging support per port, and power switch polarity. Consider the shared link feature if embedded SS devices need to coexist with standard USB 2.0 peripherals on the same physical port.

Application Specific Microcontrollers Part Context

The CYUSB3304 belongs to the EZ-USB HX3 family of USB 3.2 Gen 1 hub controllers. It is part of a broader portfolio that includes variants with two, six, or eight downstream ports, such as the CYUSB3302 and CYUSB332x series. The HX3 family is designed to reduce system BOM through integrated passive components and flexible configuration options via pin-straps, eFuse, or I2C.

Application Specific Microcontrollers Replacement Considerations

Direct substitutes within the EZ-USB HX3 family include the CYUSB3302 (2-port) or other CYUSB330x variants depending on port count requirements. Verify pinout compatibility and configuration settings when replacing with different port counts or package types like the 88-pin QFN or 100-ball BGA.