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Infineon Technologies CYUSB3302-68LTXI
- Part No.:
- CYUSB3302-68LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3302-68LTXI.pdf
- Description:
- IC USB 3.0 HUB 2-PORT 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,341
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Product details
Overview
CYUSB3302-68LTXI from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with two downstream ports, integrated ARM® Cortex®-M0 CPU (16 KB RAM, 32 KB ROM), USB BC v1.2 charging support, and industrial temperature range (–40°C to +85°C). It enables embedded docking stations and compact peripheral hubs requiring full-speed USB 2.0 backward compatibility, shared-link capability for dual-device per port, and ghost charging during host disconnection.
For engineers reviewing the CYUSB3302-68LTXI datasheet, CYUSB3302-68LTXI pinout, CYUSB3302-68LTXI application, or CYUSB3302-68LTXI equivalent, this device delivers certified USB-IF TID# 330000060 hub functionality with configurable pin-straps, I2C-based firmware upgrade, and SS/USB 2.0 link power management (U0–U3/L0–L3) in a space-constrained 68-pin QFN package.
Technical Context
The CYUSB3302 integrates two independent hub controllers: an SS hub supporting U0–U3 link states and full-duplex 5 Gbps operation, and a USB 2.0 hub with four transaction translators (one per DS port), L0–L3 power states, and suspend/resume signaling. Its Cortex-M0 subsystem handles configuration, BC v1.2 charging control, and vendor-command execution.
It implements on-chip port control logic for overcurrent detection, ganged/individual power switching, LED indicators per port, and ACA-Dock mode for simultaneous charging/data transfer. Configuration is supported via pin-straps (VID, port count, power switch polarity), eFuse, or I2C EEPROM - with no external crystal required due to internal 26 MHz oscillator integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | 5 Gbps SuperSpeed, 480 Mbps High-Speed, 12 Mbps Full-Speed, 1.5 Mbps Low-Speed on all ports |
| Downstream Ports | 2 × USB 3.2 Gen 1 DS ports with Multi-TT USB 2.0 transaction translators |
| Charging Compliance | USB Battery Charging v1.2 (BC v1.2) on both DS ports, including ghost charging and ACA-Dock support |
| CPU Core | ARM® Cortex®-M0 with 16 KB RAM and 32 KB ROM for runtime configuration and firmware updates |
| Configuration Interface | I2C slave/master/multi-master; supports EEPROM programming and USB-to-I2C bridge via vendor commands |
| Operating Temperature | –40°C to +85°C industrial grade, validated for sustained operation in embedded dock and monitor applications |
| Package Dimensions | 68-pin QFN, 8 mm × 8 mm × 1.0 mm body height, 0.4 mm pitch |
Pinout & Package
68-pin QFN (8 × 8 × 1.0 mm), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| US_DP / US_DM | Upstream differential pair | Connects to host controller; supports SS and USB 2.0 signaling on same pins |
| DS1_DP / DS1_DM / DS2_DP / DS2_DM | Downstream differential pairs | Each pair carries SS + USB 2.0 signals; enables shared-link mode for concurrent SS and USB 2.0 device attachment |
| VDD_3P3 / VDD_1P2 | Power supplies | Separate 3.3 V and 1.2 V rails; decoupling required per datasheet layout guidelines |
| I2C_SDA / I2C_SCL | I2C interface | Configurable as master or slave; used for EEPROM programming and external ASSP firmware update |
| PWR_EN1 / PWR_EN2 | Port power enable outputs | Drives external power switches; supports ganged or individual control per DS port |
| LED_SUS / LED_SS / LED_HS | Status indicator outputs | Drive LEDs for suspend, SuperSpeed, and USB 2.0 activity per port |
Key Features
| Feature | Design Value |
|---|---|
| USB-IF Certified Hub (TID# 330000060) | Guarantees interoperability with certified hosts and peripherals without custom driver development |
| Shared Link Architecture | Allows one DS port to connect simultaneously to an embedded SS device and a removable USB 2.0 device - enabling up to four total endpoints from two physical ports |
| Ghost Charging | Each DS port emulates a Dedicated Charging Port (DCP) when upstream host is disconnected, delivering up to 1.5 A without host negotiation |
| Pin-Strap Configuration | Eliminates need for external configuration EEPROM in cost-sensitive designs; sets VID, port count, and power switch behavior at boot |
| Integrated 26 MHz Oscillator | Removes external crystal and associated load capacitors, reducing BOM count and PCB area |
Applications
| Standalone USB Hub | Docking Station |
|---|---|
Use Scenario: Compact desktop hub connecting keyboard, mouse, storage, and audio devices to a laptop. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub controller managing protocol translation, power distribution, and link state negotiation across all ports. Use Value: Delivers full 5 Gbps bandwidth to SSDs while maintaining backward compatibility with legacy peripherals via integrated Multi-TT architecture. | Use Scenario: Embedded docking solution for tablets or thin clients with video, Ethernet, and multiple USB peripherals. IC Role / Device Role / Timing Role: Hub controller with shared-link capability enabling simultaneous connection of internal display interface (SS) and external USB 2.0 peripherals (e.g., HID, UART adapters). Use Value: Reduces port count and PCB complexity by consolidating two logical connections into one physical DS port without sacrificing bandwidth or charging capability. |
| Monitor with USB Hub | Industrial Hand-Held Cradle |
Use Scenario: Display with built-in USB hub for peripheral passthrough and device charging. IC Role / Device Role / Timing Role: USB hub with BC v1.2 compliance and ghost charging, managing power delivery and data routing between upstream PC and downstream devices. Use Value: Enables charging of smartphones and tablets even when the monitor is powered but disconnected from host - critical for kiosk and digital signage use cases. | Use Scenario: Ruggedized cradle for barcode scanners or mobile computers requiring hot-swap USB connectivity and battery top-off. IC Role / Device Role / Timing Role: Industrial-grade hub controller providing overcurrent protection, robust ESD tolerance (±8 kV HBM), and extended temperature operation. Use Value: Ensures reliable enumeration and power delivery in field-deployed equipment where ambient temperature fluctuates and electrical noise is prevalent. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.2 Gen 1 hub controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYUSB3304-68LTXI | Four DS ports vs. two; identical core architecture, same package and temperature rating | Suitable for higher-port-count hubs where space allows; requires additional USB 2.0/SS routing and power switch circuitry | Select when system requires ≥3 downstream devices and board layout accommodates extra signal traces and power FETs |
| UPD720210K8-701-BAC-A | Renesas USB 3.0 hub; no integrated Cortex-M0 CPU; no pin-strap configuration; requires external EEPROM | Lacks ghost charging, shared-link, and vendor-command USB-to-I2C bridge features | Choose only if legacy Renesas ecosystem integration or specific WHQL certification path is mandated |
Compared with CYUSB3304-68LTXI, the CYUSB3302-68LTXI reduces component count and routing complexity for dual-peripheral systems; versus UPD720210, it provides firmware flexibility, embedded intelligence, and enhanced charging features - making it superior for compact, feature-rich embedded docks and monitors.
Availability
CYUSB3302-68LTXI is available at Aetrix Electronics and suitable for standalone USB hubs, embedded docking stations, and industrial hand-held cradles requiring stable component supply, industrial temperature operation, and USB-IF certification.
Supply support for CYUSB3302-68LTXI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and consumer markets.
The EZ-USB™ HX3 product line targets high-integration USB hub applications in space-constrained embedded systems - emphasizing reduced BOM, flexible configuration, and advanced charging features without external components.
FAQ
Does CYUSB3302-68LTXI require an external crystal?
No. The device integrates a 26 MHz oscillator, eliminating the need for an external crystal or load capacitors. This reduces bill-of-materials cost and PCB footprint while maintaining timing accuracy within USB 3.2 Gen 1 specification limits for both SS and USB 2.0 links.
What is the function of the "shared link" feature?
The shared link allows a single downstream port to concurrently connect one SuperSpeed device (e.g., internal SSD or display interface) and one USB 2.0 device (e.g., HID peripheral) using time-multiplexed lane allocation. This doubles effective endpoint capacity without adding physical ports or increasing PCB routing complexity.
Can CYUSB3302-68LTXI support Apple charging protocols?
Yes. All downstream ports comply with USB BC v1.2 and explicitly support Apple charging signatures (including 2.1 A DCP mode) as verified in Infineon's application note AN92442. No external resistor networks or firmware modifications are required for iPhone/iPad compatibility.
How is firmware updated on CYUSB3302-68LTXI?
Firmware updates are performed via vendor-specific USB commands routed through the upstream port. The integrated Cortex-M0 executes in-system programming (ISP) of an external I2C EEPROM or accepts direct code loading from a host using Infineon's Blaster Plus tool - enabling field upgrades without JTAG or dedicated debug interfaces.
CYUSB3302-68LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 68-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- USB 3.0 Hub Controller
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- ROM (32kB)
- Controller Series:
- CYUSB
- RAM Size:
- 16K x 8
- Interface:
- I2C
- Number of I/O:
- 10
- Voltage - Supply:
- 1.14V ~ 1.26V, 2.5V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 68-QFN (8x8)
CYUSB3302-68LTXI FAQ
1.How can I place an order for CYUSB3302-68LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3302-68LTXI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CYUSB3302-68LTXI reliable?
The price and inventory of CYUSB3302-68LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3302-68LTXI is usually 5 days.
3.What payment methods are accepted for CYUSB3302-68LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3302-68LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3302-68LTXI?
CYUSB3302-68LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3302-68LTXI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CYUSB3302-68LTXI?
For technical support, including CYUSB3302-68LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3302-68LTXI requirements.
6.How does Aetrix verify that CYUSB3302-68LTXI is sourced from the original manufacturer or authorized distributors?
All CYUSB3302-68LTXI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CYUSB3302-68LTXI meets industry standards.
7.What is the process for return or replacement of CYUSB3302-68LTXI?
All CYUSB3302-68LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3302-68LTXI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CYUSB3302-68LTXI part is unused and in its original packaging.
Return procedure for CYUSB3302-68LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3302-68LTXI Tags
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