CYUSB3304-BVXI

Application Specific Microcontrollers Overview

The CYUSB3304-BVXI is a USB 3.2 Gen 1 hub controller compliant with the USB 3.0 specification revision 1.0, belonging to the EZ-USB™ HX3 family. It supports four downstream (DS) ports capable of SuperSpeed (5 Gbps), High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) data rates. The device integrates an ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and firmware execution. Electrical specifications include a minimum supply voltage of 1.14 V and a maximum of 1.26 V for the core, with a typical operating current of 410 mA. It operates within an industrial temperature range of -40°C to +85°C and utilizes a 100-ball BGA package.

Application Specific Microcontrollers Feature Summary

• Four USB 3.0-compliant downstream ports supporting SS, HS, FS, and LS speeds with dedicated transaction translators.
• Integrated ARM Cortex-M0 processor enabling GPIO configuration, battery charging control, and vendor-command support.
• Supports enhanced battery charging v1.2, including ghost charging when the upstream port is disconnected.
• Configurable via pin-straps or I2C interface for VID, PID, power switch polarity, and active port count.

Application Specific Microcontrollers Applications

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

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix BVXI against the manufacturer's ordering guide to confirm package type and temperature grade. Confirm availability status as product lifecycles may change. Ensure compliance with RoHS directives and check for any discontinuance notifications prior to finalizing procurement plans.

Application Specific Microcontrollers Selection Notes

Select this model for designs requiring four independent downstream ports with SuperSpeed capabilities. Verify that the PCB layout accommodates the 100-ball BGA package dimensions. Ensure the design supports the required 1.2 V core and 3.3 V I/O supply rails. Consider the need for external precision resistors for PHY termination calibration if utilizing the standard pin configurations.

Application Specific Microcontrollers Part Context

This component is part of the Infineon EZ-USB™ HX3 family of USB 3.0 hub controllers. The family includes variants with different port counts, such as the CYUSB3302 (2-port) and CYUSB3326 (6-port). The CYUSB3304 specifically targets applications needing four high-speed ports without shared link features found in higher-end models like the CYUSB332x series.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same family include CYUSB3304-BVXC or CYUSB3304-BZXI, depending on the required package and temperature rating. Cross-family substitution requires verifying pin compatibility and electrical characteristics against the target application requirements.