CYUSB3314-88LTXIT

Application Specific Microcontrollers Overview

The CYUSB3314-88LTXIT is a USB 3.2 Gen 1 hub controller from the EZ-USB™ HX3 family, compliant with USB 3.0 specification revision 1.0. It supports four downstream ports operating at SuperSpeed (5 Gbps), High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps). The device integrates an ARM® Cortex®-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and firmware execution. Key features include Shared Link capability for embedded applications, Ghost Charge functionality for charging without a host connection, and support for USB Battery Charging v1.2 specifications. It utilizes an 88-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Supports up to four USB 3.0-compliant downstream ports with dedicated High-Speed transaction translators (Multi-TT).
• Includes Shared Link feature allowing simultaneous connection of embedded SS devices and removable USB 2.0 devices.
• Features Ghost Charge capability to emulate a Dedicated Charging Port (DCP) when the upstream port is disconnected.
• Integrates an ARM® Cortex®-M0 CPU for GPIO configuration, power control, and vendor-command bridge operations.

Application Specific Microcontrollers Applications

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

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix 'IT' against official Infineon documentation to confirm temperature range and packaging details. Ensure compatibility with required I2C EEPROM or external master configurations if firmware upgrades are planned. Check pin-strapping requirements for VID, PID, and port activation settings prior to PCB design finalization.

Application Specific Microcontrollers Selection Notes

Select this model for designs requiring four SuperSpeed downstream ports with integrated transaction translation. Consider the Shared Link feature if space-constrained embedded applications require splitting a single physical port into separate SS and USB 2.0 connections. Verify that the 88-pin QFN package fits the available board real estate and thermal constraints.

Application Specific Microcontrollers Part Context

This component belongs to the EZ-USB™ HX3 family of USB 3.2 Gen 1 hub controllers developed by Infineon Technologies (formerly Cypress). The family includes variants with different port counts and interface capabilities, such as the CYUSB330x series for 2-port configurations and CYUSB332x series for mixed-speed options. The HX3 line is designed to reduce bill of materials through integrated resistors and configurable pin-straps.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same package and pinout include other CYUSB331x variants like CYUSB3314-88LTXCT, provided the temperature grade matches the application requirements. Cross-family substitution requires careful evaluation of port count and feature sets.