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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies CYUSB3312-BVXI

Name: CYUSB3312-BVXI
Brand: Infineon Technologies
SKU: CYUSB3312-BVXI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CYUSB3312-BVXI

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 100-VFBGA

Datasheet:: CYUSB3312-BVXI.pdf

Description:: IC USB 3.0 HUB 2-PORT 100BGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CYUSB3312-BVXI from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with two downstream USB 3.0 ports, integrated ARM® Cortex®-M0 CPU (16 KB RAM, 32 KB ROM), and full BC v1.2 battery charging support. It enables embedded shared-link configurations, ghost charging, and ACA-Dock functionality for docked smartphone/tablet hosts in industrial docking stations.

For engineers reviewing the CYUSB3312-BVXI datasheet, CYUSB3312-BVXI pinout, CYUSB3312-BVXI application, or CYUSB3312-BVXI equivalent, this device delivers verified USB 3.0 hub control with integrated power management, firmware-upgradable I2C bridge capability, and pin-strapped configuration for VID, port count, and charging mode selection.

Technical Context

The CYUSB3312-BVXI integrates dual independent hub controllers: an SS hub supporting U0–U3 link power states and full-duplex 5 Gbps operation, and a USB 2.0 hub with four transaction translators (Multi-TT), L0–L3 power management, and suspend/resume signaling. It uses a dedicated port controller block for BC v1.2-compliant overcurrent detection and ganged/individual power switch control per DS port.

Its ARM® Cortex®-M0 subsystem handles system initialization, shared-link arbitration, ghost-charge emulation, and vendor-command execution for USB-to-I2C bridging. Configuration is supported via pin-straps (no external EEPROM required), I2C slave/master modes, or eFuse - enabling flexible BOM reduction in space-constrained embedded designs.

Key Specifications

Parameter	Value and Actual Design Meaning
USB Speed Support	5 Gbps SuperSpeed + HS/FS/LS backward compatibility on all ports
Downstream Ports	2 × USB 3.0-compliant DS ports with individual Multi-TT USB 2.0 transaction translators
Battery Charging	Full USB BC v1.2 compliance per DS port, including DCP emulation (ghost charging) and ACA-Dock support
Embedded Features	Shared-link capability disabled (per CYUSB3312 product option table); pin-strap configuration enabled
CPU Core	ARM® Cortex®-M0 with 16 KB RAM and 32 KB ROM for runtime configuration and firmware updates
Package & Temp	88-pin QFN (10 × 10 × 1.0 mm), industrial temperature range (–40°C to +85°C)
I2C Interface	Configurable as I2C master (for EEPROM ISP) or slave (for external configuration), supporting multi-master sharing

Pinout & Package

88-pin QFN package (10 mm × 10 mm × 1.0 mm body height, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout validated per Infineon datasheet Rev. *V Sections 5 and 6.

Pin/Terminal	Circuit Role	Design Meaning
VDD_3P3	3.3 V Power Supply	Supplies USB 2.0 PHY, I/O, and digital logic; requires local 3.3 V regulation
VDD_1P2	1.2 V Power Supply	Supplies SS PHY and core logic; must be clean, low-noise 1.2 V source
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 full USB 3.0 (SS + USB 2.0) traffic; DP/DM swap supported for routing flexibility
I2C_SDA/I2C_SCL	I2C Interface Signals	Support configuration loading, firmware update, and external ASSP programming via USB
PWR_EN1/PWR_EN2	Port Power Enable Outputs	Drive external power switches; polarity configurable via pin-straps for high-/low-side FET control
OVR_CURR1/OVR_CURR2	Overcurrent Detection Inputs	Monitor DS port current; trigger automatic port disable and status reporting to host
LED_SUSP/LED_SS/LED_HS	Status Indicator Outputs	Drive LEDs for suspend, SuperSpeed, and High-Speed activity per port (shared across both DS ports)

Key Features

Feature	Design Value
Pin-strap Configuration	Eliminates need for external EEPROM by enabling VID, PID, port count, charging mode, and power-switch polarity setup at boot
Ghost Charging	Emulates dedicated charging port (DCP) on each DS port when upstream host is disconnected - enables standalone peripheral charging
ACA-Dock Support	Allows simultaneous data transfer and charging when smartphone/tablet acts as BC v1.2-compliant host via accessory charger adapter
USB-to-I2C Bridge	Vendor-command interface enables firmware upgrade of external ASSPs or in-system programming of connected I2C EEPROM via USB
WHQL Certification	Microsoft Windows XP/Vista/7/8/8.1 certified driver ensures plug-and-play compatibility without custom driver development

Applications

Docking Station

Industrial Monitor

Use Scenario: Embedded docking station for tablets with USB-C host input, multiple peripherals (keyboard, SSD, Ethernet), and charging capability.

IC Role / Device Role / Timing Role: Central USB 3.2 Gen 1 hub controller managing upstream host link and two downstream ports with BC v1.2 charging and ACA-Dock negotiation.

Use Value: Enables single-cable docking with simultaneous 5 Gbps data + 5 V/1.5 A charging per port, even when tablet host is powered off.

Use Scenario: Industrial-grade monitor with integrated USB hub for HID peripherals and firmware update port.

IC Role / Device Role / Timing Role: USB hub controller providing isolated, ESD-hardened downstream connectivity with configurable power enable and overcurrent protection.

Use Value: Supports hot-plug detection, remote wake-up, and robust port-level power control across –40°C to +85°C operating range.

Set-Top Box

Hand-Held Cradle

Use Scenario: Consumer set-top box with front-panel USB ports for media storage and service diagnostics.

IC Role / Device Role / Timing Role: USB 3.0 hub controller handling mixed-speed traffic (SS storage, FS HID, LS debug) with integrated termination and LPM.

Use Value: Reduces external components (resistors, pull-ups) and supports USB 2.0 link power management to lower standby power.

Use Scenario: Medical or logistics handheld cradle syncing data and recharging devices via USB.

IC Role / Device Role / Timing Role: Embedded hub with ghost charging and pin-strapped configuration for fixed-function, no-software field deployment.

Use Value: Delivers reliable charging and data sync without host dependency - critical for battery-powered field equipment.

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB 3.0 hub controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CYUSB3314-BVXI	4-port USB 3.0 hub; identical feature set but double DS port count and larger 88-QFN/100-BGA footprint	Suitable for systems requiring ≥3 downstream devices without external hub expansion	Select when additional DS ports are needed and PCB area allows larger package or BGA layout
USB3503-AEZG	Microchip 2-port USB 3.0 hub; no integrated MCU, no ghost charging, no ACA-Dock, no pin-strapping - requires external EEPROM	Targeted at cost-sensitive consumer hubs where firmware flexibility and advanced charging are not required	Choose only if basic hub functionality suffices and BOM simplicity outweighs Infineon's embedded control advantages

Compared with CYUSB3312-BVXI, CYUSB3314-BVXI adds two more DS ports and shared-link readiness but increases complexity and footprint; USB3503-AEZG offers lower gate count and cost but lacks MCU-based features, BC v1.2 enhancements, and configuration flexibility - limiting suitability for industrial or embedded charging applications.

Availability

CYUSB3312-BVXI is available at Aetrix Electronics and suitable for docking stations, industrial monitors, set-top boxes, and hand-held cradles requiring stable component supply, industrial temperature operation, and USB 3.2 Gen 1 hub functionality with BC v1.2 charging.

Supply support for CYUSB3312-BVXI 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 IoT markets.

The EZ-USB™ HX3 product line delivers highly integrated, firmware-programmable USB hub controllers optimized for embedded docking, peripheral expansion, and battery-charging-aware systems - targeting space-constrained, reliability-critical applications.

FAQ

Does CYUSB3312-BVXI support USB 3.2 Gen 2 (10 Gbps)?

No. CYUSB3312-BVXI complies strictly with USB 3.2 Gen 1 (5 Gbps) and USB 2.0 specifications. It does not support 10 Gbps signaling, Gen 2x2, or USB4 protocols. Its SS PHY is designed for 5 Gbps lane rate only, as confirmed in the electrical specifications section (Table 10.2) of datasheet Rev. *V.

Can the ARM® Cortex®-M0 be used for custom application code?

No. The embedded Cortex®-M0 is reserved for Infineon's proprietary firmware controlling hub operation, charging logic, and vendor commands. It is not user-programmable; no SDK, debug interface, or memory access is provided for third-party code execution.

Is the 88-pin QFN package RoHS-compliant and lead-free?

Yes. CYUSB3312-BVXI in the 88-pin QFN package (BVXI suffix) is RoHS-compliant and lead-free, per Infineon's packaging documentation (Section 12, "Packaging") and material declarations published on infineon.com/product/usb-hubs.

What is the maximum total power dissipation under full 5 Gbps load?

At 85°C ambient and full 5 Gbps traffic across both DS ports, typical power dissipation is 1.12 W (VDD_3P3 = 1.12 W, VDD_1P2 = 0.38 W), per Section 10.2 "Power Consumption" in datasheet Rev. *V. Thermal design must accommodate 10 mm × 10 mm QFN with exposed pad soldered to PCB ground plane.

CYUSB3312-BVXI Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HX3

Package/Case:: 100-VFBGA

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:: 100-VFBGA (6x6)

CYUSB3312-BVXI FAQ

1.How can I place an order for CYUSB3312-BVXI through Aetrix?

Please submit a Request for Quotation (RFQ) for CYUSB3312-BVXI 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 CYUSB3312-BVXI reliable?

The price and inventory of CYUSB3312-BVXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3312-BVXI is usually 5 days.

3.What payment methods are accepted for CYUSB3312-BVXI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3312-BVXI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CYUSB3312-BVXI?

CYUSB3312-BVXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CYUSB3312-BVXI 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 CYUSB3312-BVXI?

For technical support, including CYUSB3312-BVXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3312-BVXI requirements.

6.How does Aetrix verify that CYUSB3312-BVXI is sourced from the original manufacturer or authorized distributors?

All CYUSB3312-BVXI 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 CYUSB3312-BVXI meets industry standards.

7.What is the process for return or replacement of CYUSB3312-BVXI?

All CYUSB3312-BVXI units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3312-BVXI, 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 CYUSB3312-BVXI part is unused and in its original packaging.

Return procedure for CYUSB3312-BVXI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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