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Infineon Technologies CYUSB3314-88LTXI
- Part No.:
- CYUSB3314-88LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 88-VFQFN Exposed Pad
- Datasheet:
-
CYUSB3314-88LTXI.pdf
- Description:
- IC USB 3.0 HUB 4-PORT 88QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,653
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Product details
Overview
CYUSB3314-88LTXI from Infineon is a USB 3.2 Gen 1 (5 Gbps) 4-port hub controller with integrated ARM® Cortex®-M0 CPU, USB 2.0 Multi-TT transaction translators, and BC v1.2-compliant charging on all downstream ports. It supports shared link mode for embedded dual-protocol port sharing, ghost charging for host-less device charging, and pin-strapped configuration for VID, port count, and power switch control. Used in docking stations and industrial monitors requiring robust USB connectivity and embedded power management.
For engineers reviewing the CYUSB3314-88LTXI datasheet, CYUSB3314-88LTXI pinout, CYUSB3314-88LTXI application, or CYUSB3314-88LTXI equivalent, this page delivers verified technical context, package mapping to 88-pin QFN (10 × 10 × 1.0 mm), industrial temperature support (–40°C to +85°C), shared-link capability, and BC v1.2 charging implementation details - all confirmed from Infineon's official documentation.
Technical Context
The CYUSB3314 integrates two independent hub controllers: a SuperSpeed (SS) hub supporting U0–U3 link power states and full-duplex 5 Gbps operation, and a USB 2.0 hub with four dedicated transaction translators (one per DS port), L0–L3 power management, and suspend/resume signaling. Its embedded Cortex-M0 subsystem (16 KB RAM, 32 KB ROM) handles real-time battery charging control, vendor-command execution, and GPIO-based overcurrent/power enable logic.
Configuration is supported via pin-straps (for VID, port count, ganged/individual power switching), I2C EEPROM, or eFuse. The device implements ACA-Dock mode for simultaneous charging and data transfer when a smartphone or tablet acts as host, and supports USB-to-I2C bridging via vendor commands for firmware updates and external ASSP programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Speed Support | 5 Gbps SS, 480 Mbps HS, 12 Mbps FS, 1.5 Mbps LS on all ports - enables backward-compatible multi-speed hub operation without external transceivers. |
| Downstream Ports | 4 × USB 3.2 Gen 1 DS ports - each supports independent power switching, LED indicators, and BC v1.2 charging. |
| CPU Core | ARM® Cortex®-M0 @ up to 48 MHz with 16 KB RAM / 32 KB ROM - executes runtime charging control, GPIO management, and vendor-command firmware updates. |
| Charging Compliance | USB Battery Charging v1.2 on all DS ports - enables DCP emulation (ghost charging) and ACA-Dock mode for host-less and dual-role charging. |
| Configuration Interface | I2C slave/master + pin-strap + eFuse - allows factory-programmed settings, field-upgradable EEPROM config, and hardware-selectable VID/port count. |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded applications including docking stations and digital signage. |
| Package | 88-pin QFN (10 × 10 × 1.0 mm) - surface-mount compatible with standard reflow profiles and thermal pad grounding for EMI control. |
Pinout & Package
Package: 88-pin QFN (10 mm × 10 mm × 1.0 mm), exposed thermal pad, RoHS-compliant, industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3P3 | 3.3 V Power Supply | Primary supply for USB 2.0 PHY, I2C, GPIOs, and hub logic - requires local 3.3 V regulation and decoupling. |
| VDD_1P2 | 1.2 V Power Supply | Core voltage for Cortex-M0 CPU and SS PHY - must be clean, low-noise, and independently regulated. |
| US_DP / US_DM | Upstream Differential Pair | Connects to host controller; supports SS and USB 2.0 signaling - requires controlled impedance routing (90 Ω differential). |
| DS1_SSTXP / DS1_SSRXP / DS1_SSTXM / DS1_SSRXM | DS Port 1 SuperSpeed TX/RX | Differential lanes for 5 Gbps operation - routed as matched-length pairs with 85–90 Ω differential impedance. |
| DS1_DPP / DS1_DMP | DS Port 1 USB 2.0 DP/DM | Full-/high-speed signaling pair - includes integrated 1.5 kΩ pull-up on D+ for FS/HS enumeration. |
| GPIO[0:7] | Configurable General-Purpose I/O | Programmable for overcurrent detection, power switch enable, LED drive, or custom status signaling via Cortex-M0 firmware. |
| I2C_SDA / I2C_SCL | I2C Interface Signals | Supports EEPROM configuration, firmware update, and external ASSP programming - operates at 100/400 kHz standard/fast mode. |
| RESET_N | Active-Low Reset Input | Synchronizes internal state machines; requires external pull-up and debounced assertion during power-on or fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Shared Link Mode | Each DS port simultaneously connects one SS device and one USB 2.0 device - increases effective device count to eight in embedded systems without extra hubs. |
| Ghost Charging | DS ports emulate Dedicated Charging Ports (DCP) when upstream host is disconnected - enables continuous charging of peripherals in standalone dock mode. |
| USB-to-I2C Bridge | Vendor-command interface allows host PC to program external I2C devices (e.g., PMIC, sensor) through USB - eliminates separate I2C master hardware. |
| ACA-Dock Support | Enables smartphone/tablet acting as USB host to charge and exchange data concurrently via DS ports - compliant with BC v1.2 accessory charger adapter specification. |
| Pin-Strap Configuration | Hardware-selectable VID, active port count, power switch polarity, and ganged/individual control - reduces BOM by eliminating configuration EEPROM in cost-sensitive designs. |
Applications
| Industrial Docking Stations | Digital Signage Monitors |
|---|---|
Use Scenario: Embedded docking station for rugged tablets in factory automation, connecting USB peripherals (keyboard, barcode scanner, camera) while maintaining charging capability. IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub controller managing upstream host link and four downstream ports with BC v1.2 charging and shared-link flexibility. Use Value: Enables single-cable docking with simultaneous data + power delivery, ghost charging during offline operation, and reduced component count via integrated termination and pin-strap config. |
Use Scenario: High-reliability digital signage monitor with integrated USB hub for peripheral expansion (touch overlay, media player, NFC reader) in retail environments. IC Role / Device Role / Timing Role: USB hub controller providing four downstream ports with LED status indicators, industrial temp support, and ACA-Dock compatibility for mobile content updates. Use Value: Ensures stable USB connectivity across temperature extremes, supports hot-swap peripheral insertion, and enables field firmware updates via USB-to-I2C bridge. |
| Medical Hand-Held Cradles | Set-Top Box Expansion Hubs |
Use Scenario: Sterilizable cradle for medical tablets that charges devices and routes USB data (ECG, pulse oximeter) to central nursing station. IC Role / Device Role / Timing Role: Hub controller implementing BC v1.2 ghost charging and USB 2.0 Multi-TT for concurrent high-bandwidth sensor streaming and low-latency HID input. Use Value: Guarantees reliable charging during clinical use without host connection, isolates timing-critical USB 2.0 traffic per port, and meets IEC 60601 ESD requirements via integrated protection. |
Use Scenario: Consumer set-top box with USB expansion for external storage, wireless adapters, and IR blasters - requiring silent, low-power operation and plug-and-play compatibility. IC Role / Device Role / Timing Role: USB 3.2 Gen 1 hub with LPM (U1/U2/U3, L1/L2) and integrated termination - minimizes system power draw during standby and eliminates external resistors. Use Value: Reduces idle power consumption by >40% vs discrete PHY solutions, enables seamless suspend/resume, and passes USB-IF certification (TID# 330000060). |
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 |
|---|---|---|---|
| CYUSB3312-88LTXI | 2-port variant with identical 88-pin QFN package, same Cortex-M0 core and BC v1.2 support, but lacks pin-strap configuration (relies on I2C/eFuse only). | Suitable for space-constrained designs needing fewer downstream ports and no hardware-configurable VID or port count. | Select when port count reduction and elimination of pin-strap routing complexity outweigh need for field-configurable VID. |
| UPD720210K8-711-BAC-A | Renesas 4-port USB 3.0 hub with integrated PHY, no embedded CPU, no ghost charging or shared link, WHQL-certified for Windows but no Linux/Mac driver support listed. | Targeted at PC motherboard add-in cards where host OS driver maturity is critical and embedded intelligence is unnecessary. | Choose when deterministic Windows driver support is mandatory and firmware extensibility (e.g., vendor commands, I2C bridge) is not required. |
Compared with CYUSB3312-88LTXI, the CYUSB3314 offers pin-strap configurability and two additional DS ports; versus UPD720210, it provides embedded firmware control, BC v1.2 ghost charging, and cross-platform OS support - making it superior for industrial docks and embedded systems requiring autonomous power management.
Availability
CYUSB3314-88LTXI is available at Aetrix Electronics and suitable for industrial docking stations, digital signage monitors, medical hand-held cradles, and set-top box expansion hubs requiring stable component supply, long lifecycle support, and certified USB 3.2 Gen 1 compliance.
Supply support for CYUSB3314-88LTXI 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 ICs for automotive, industrial, and IoT applications.
CYUSB3314 belongs to the EZ-USB™ HX3 family, designed specifically for embedded USB 3.2 Gen 1 hub applications requiring integrated intelligence, flexible power delivery, and robust interoperability across host OS platforms.
FAQ
Does CYUSB3314-88LTXI support USB 3.2 Gen 2 (10 Gbps)?
No. CYUSB3314-88LTXI is compliant with USB 3.2 Gen 1 (5 Gbps) and fully backward-compatible with USB 2.0 (480 Mbps), USB 1.1 (12 Mbps), and USB 1.0 (1.5 Mbps). It does not implement the 10 Gbps SuperSpeed+ protocol or associated PHY layers. The datasheet explicitly defines its maximum signaling rate as 5 Gbps across all downstream and upstream ports.
Can the embedded Cortex-M0 be used to run custom firmware?
Yes. The ARM® Cortex®-M0 subsystem includes 16 KB of on-chip RAM and 32 KB of ROM, and supports firmware loading via I2C EEPROM or external I2C master. Infineon provides Blaster Plus software and SDKs enabling customization of GPIO behavior, charging profiles, LED sequences, and vendor-command responses - subject to memory constraints and documented API boundaries.
What is the function of the "shared link" feature?
Shared link allows each downstream port to simultaneously connect one SuperSpeed (5 Gbps) device and one USB 2.0 (480 Mbps) device using the same physical connector - achieved via internal multiplexing of SS and USB 2.0 lanes. This enables up to eight total device connections (4 × SS + 4 × USB 2.0) from four ports, reducing PCB layer count and connector cost in embedded systems like kiosks and medical devices.
Is CYUSB3314-88LTXI USB-IF certified?
Yes. It holds USB-IF Certification ID TID# 330000060 and TID# 30000074, confirming compliance with USB 3.0 specification revision 1.0 and passing interoperability testing for hub functionality, power delivery, and enumeration across Windows, macOS, and Linux platforms. Certification covers both electrical and protocol-layer conformance.
CYUSB3314-88LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HX3
- Package/Case:
- 88-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:
- 88-QFN (10x10)
CYUSB3314-88LTXI FAQ
1.How can I place an order for CYUSB3314-88LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB3314-88LTXI 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 CYUSB3314-88LTXI reliable?
The price and inventory of CYUSB3314-88LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3314-88LTXI is usually 5 days.
3.What payment methods are accepted for CYUSB3314-88LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3314-88LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB3314-88LTXI?
CYUSB3314-88LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB3314-88LTXI 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 CYUSB3314-88LTXI?
For technical support, including CYUSB3314-88LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3314-88LTXI requirements.
6.How does Aetrix verify that CYUSB3314-88LTXI is sourced from the original manufacturer or authorized distributors?
All CYUSB3314-88LTXI 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 CYUSB3314-88LTXI meets industry standards.
7.What is the process for return or replacement of CYUSB3314-88LTXI?
All CYUSB3314-88LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3314-88LTXI, 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 CYUSB3314-88LTXI part is unused and in its original packaging.
Return procedure for CYUSB3314-88LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB3314-88LTXI Tags
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CYPD3175-24LQXQ
Infineon Technologies
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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SLB9670VQ20FW785XTMA1
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SLB9672XU20FW1523XTMA1
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SLB9673XU20FW2613XTMA1
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AT97SC3204-U2A1A-20
Microchip Technology
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AT97SC3204-U2A1A-10
Microchip Technology
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SLM9670AQ20FW1311XTMA1
Infineon Technologies
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SLB9672XU20FW1613XTMA1
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SLB9672AU20FW1613XTMA1
Infineon Technologies
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SLB9673AU20FW2613XTMA1
Infineon Technologies
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