CYUSB3326-88LTXIT

Application Specific Microcontrollers Overview

The CYUSB3326-88LTXIT 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 SuperSpeed (5 Gbps), High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) on all ports. The device integrates an ARM® Cortex®-M0 CPU with 16 KB RAM and 32 KB ROM for system configuration and battery charging control. It features six downstream ports: two USB 3.0-compliant ports and four additional ports utilizing shared link technology to connect embedded SS devices and removable USB 2.0 devices simultaneously. The component includes integrated termination, pull-up, and pull-down resistors, supporting pin-strap configuration to reduce bill of materials.

Application Specific Microcontrollers Feature Summary

• Six Downstream Ports: Two standard USB 3.0 ports and four shared link ports enabling up to eight total device connections.
• Integrated ARM® Cortex®-M0 CPU: Provides 16 KB RAM and 32 KB ROM for firmware execution and configuration management.
• Enhanced Battery Charging: Supports USB BC v1.2, Apple charging, and ghost charging capabilities when the upstream host is disconnected.
• ACA-Dock Support: Integrates adapter controller functions to charge OTG hosts while powering downstream ports.

Application Specific Microcontrollers Applications

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

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 needed. Confirm that the 88-pin QFN package dimensions align with the target PCB layout constraints.

Application Specific Microcontrollers Selection Notes

Select this model for applications requiring more than four physical ports by utilizing the shared link feature to split USB 3.0 ports into embedded SS and standard USB 2.0 connections. Verify power supply requirements for the 1.2 V core and 3.3 V I/O domains. Ensure the design accommodates the necessary precision resistors for USB 2.0 PHY reference (6.04 kΩ ±1%) and SS PHY termination (200 Ω ±1%).

Application Specific Microcontrollers Part Context

The CYUSB3326 belongs to the EZ-USB™ HX3 family of USB 3.2 Gen 1 hub controllers. Unlike the CYUSB3324 which offers four USB 3.0 ports, the CYUSB3326 provides two USB 3.0 ports combined with two shared link ports, allowing for flexible port expansion in embedded systems. This architecture distinguishes it from pure USB 2.0 variants like the CYUSB230x series.

Application Specific Microcontrollers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.