CYUSB3312-88LTXC

Application Specific Microcontrollers Overview

The CYUSB3312-88LTXC is a USB 3.2 Gen 1 hub controller compliant with the USB 3.0 specification revision 1.0, supporting SuperSpeed (5 Gbps), High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) on all ports. It features two downstream ports, an integrated ARM Cortex-M0 CPU with 16 KB RAM and 32 KB ROM, and supports pin-strap configuration for VID, charging support, and port count. The device includes proprietary Shared Link and Ghost Charge capabilities, BC v1.2 compliance, and ACA-Dock support. It operates at a nominal 1.2 V core voltage with a maximum operating current of 410 mA.

Application Specific Microcontrollers Feature Summary

• USB-IF Certified Hub Controller supporting up to four DS ports with backward compatibility to USB 2.0/1.1
• Integrated ARM Cortex-M0 CPU for system configuration, battery charging control, and vendor-specific commands
• Proprietary Shared Link feature enabling simultaneous connection of embedded SS and removable USB 2.0 devices
• Ghost Charge capability allowing device charging when the upstream host is disconnected

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 ordering suffix '88LTXC' against the manufacturer's official documentation to confirm package type (88-pin QFN) and temperature range (Commercial). Ensure that any external components such as precision resistors for RREF_USB2 and RREF_SS are sourced according to datasheet specifications for proper PHY calibration.

Application Specific Microcontrollers Selection Notes

Select this component for designs requiring a certified USB 3.0 hub with flexible configuration via pin-straps or I2C. Consider the CYUSB3312 specifically for applications needing exactly two downstream ports with full SuperSpeed support. Verify that the system design accommodates the required 26 MHz oscillator and external power switches if utilizing Shared Link or individual port power control features.

Application Specific Microcontrollers Part Context

This part belongs to the EZ-USB HX3 family of USB 3.2 Gen 1 hub controllers from Infineon Technologies (formerly Cypress Semiconductor). The family includes variants with 2, 4, 6, or 8 downstream ports, with options for industrial temperature ranges and automotive grades. The CYUSB3312 is a commercial-grade variant focused on standard consumer electronics applications.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same family include CYUSB3302 (2-port, no pin-straps) or CYUSB3314 (4-port). For automotive applications, consider the CYUSB2312 series. Cross-family replacement with USB 2.0 hubs like CYUSB2324 requires significant redesign due to protocol differences.