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

Infineon Technologies CYUSB3328-BVXC

Name: CYUSB3328-BVXC
Brand: Infineon Technologies
SKU: CYUSB3328-BVXC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CYUSB3328-BVXC

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 100-VFBGA

Datasheet:: CYUSB3328-BVXC.pdf

Description:: IC USB 3.0 HUB 8-PORT 100BGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CYUSB3328-BVXC from Infineon is a USB 3.2 Gen 1 (5 Gbps) hub controller with eight downstream ports (4 SuperSpeed + 4 USB 2.0), integrated ARM® Cortex®-M0 CPU, USB Battery Charging v1.2 compliance, and shared-link capability for embedded systems. It supports ghost charging, ACA-Dock mode, and pin-strapped configuration - deployed in docking stations, digital TVs, and industrial monitors requiring multi-device connectivity and intelligent power management.

For engineers reviewing the CYUSB3328-BVXC datasheet, CYUSB3328-BVXC pinout, CYUSB3328-BVXC application, or CYUSB3328-BVXC equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternatives - all grounded in Infineon's official documentation and certified USB-IF TID# 33000074 compliance.

Technical Context

The CYUSB3328-BVXC integrates two independent hub controllers: a USB 3.2 Gen 1 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 remote wake-up signaling. Its on-chip Cortex®-M0 (16 KB RAM, 32 KB ROM) handles BC v1.2 charging control, vendor-command execution, and shared-link arbitration.

It implements dual-path port control: SS and USB 2.0 PHYs per downstream port, dedicated VBUS detection, LED indicators per port, and configurable external power switch drivers (individual/ganged). Configuration is supported via pin-straps, I2C EEPROM, or eFuse - enabling factory-programmed VID/PID, port enablement, and DP/DM swap for PCB routing flexibility.

Key Specifications

Parameter	Value and Actual Design Meaning
Downstream Ports	8 total: 4 × USB 3.2 Gen 1 (5 Gbps) + 4 × USB 2.0 (480 Mbps), each with independent SS/USB2 PHY and Multi-TT
Shared Link Support	4 DS ports support simultaneous SS device + USB 2.0 device connection - enables up to 8 physical device attachments per port pair
Battery Charging	Complies with USB BC v1.2; supports ghost charging (DCP emulation when US host absent) and ACA-Dock mode for data+charge
CPU Core	ARM® Cortex®-M0 with 16 KB RAM / 32 KB ROM - executes firmware for GPIO control, descriptor handling, and vendor-command I2C bridging
Configuration Interface	Pin-strap, I2C slave/master, and eFuse - allows field-upgradable VID/PID, port count, power switch polarity, and DP/DM signal swap
Operating Temperature	Industrial grade: –40°C to +85°C (88-pin QFN package only)
USB Certification	USB-IF Certified Hub, TID# 33000074; WHQL-certified for Windows XP–8.1, macOS 10.9+, Linux kernel ≥3.11

Pinout & Package

Package: 88-pin QFN (10 × 10 × 1.0 mm), exposed thermal pad, industrial temperature grade (–40°C to +85°C).

Pin/Terminal	Circuit Role	Design Meaning
US_DP / US_DM	Upstream differential pair	Connects to host controller; supports SS + USB 2.0 signaling on single lane
DS1_DP/DM – DS4_DP/DM	Downstream USB 2.0 lanes	Four dedicated HS/FS/LS lanes; each paired with corresponding SS_RX/TX pins
SSRX1P/M – SSRX4P/M SSTX1P/M – SSTX4P/M	Downstream SuperSpeed lanes	Four independent 5 Gbps differential RX/TX pairs; enable concurrent SS device attachment
I2C_SDA / I2C_SCL	I2C interface	Configures device as I2C slave (for EEPROM boot) or master (for ISP of external EEPROM)
GPIO[0:7]	General-purpose I/O	Programmable for overcurrent detection, power switch control, LED status, or vendor-defined functions
VBUS_DET[1:4]	Downstream VBUS detection	Monitors presence of 5 V on each DS port; triggers BC v1.2 charging state machine

Key Features

Feature	Design Value
Shared Link Architecture	Enables one DS port to serve both an embedded SS peripheral (e.g., camera sensor) and a removable USB 2.0 device (e.g., flash drive) simultaneously
Ghost Charging	Each DS port emulates a Dedicated Charging Port (DCP) without upstream host connection - maintains 1.5 A charging during system standby
ACA-Dock Mode	Supports smartphone/tablet acting as USB host while delivering 5 V/1.5 A charging - enables docked mobile-first workflows with data+power
USB-to-I2C Bridge	Vendor-command interface allows host PC to program external ASSPs or EEPROMs via USB - eliminates need for separate I2C debug hardware
Flexible Configuration	Pin-straps set core parameters at boot (VID, PID, port count, power switch ganging); avoids BOM cost of configuration EEPROM in cost-sensitive designs

Applications

Docking Station

Digital Television

Use Scenario: Desktop expansion dock connecting laptop to monitor, keyboard, storage, and phone.

IC Role / Device Role / Timing Role: Central USB hub managing concurrent 5 Gbps SSD traffic, 480 Mbps HID input, and BC v1.2 phone charging.

Use Value: Shared link allows internal SSD (SS) and IR receiver (USB 2.0) to share one DS port; ghost charging powers phone even when laptop is off.

Use Scenario: Smart TV with front-panel USB media playback and service port.

IC Role / Device Role / Timing Role: Hub controller enabling simultaneous USB storage access, firmware update via USB stick, and service-mode diagnostics.

Use Value: Pin-strapped configuration eliminates external EEPROM; industrial temp rating ensures reliability in enclosed TV chassis.

Industrial Monitor

Set-Top Box

Use Scenario: Touchscreen HMI in factory automation with USB peripherals and service interface.

IC Role / Device Role / Timing Role: Embedded hub providing isolated USB 2.0 ports for barcode scanner and SS port for high-res camera feed.

Use Value: Shared link reduces port count needed for dual-role connectivity; ACA-Dock mode enables technician tablet to charge while updating firmware.

Use Scenario: Cable/satellite STB with USB recording, OTA updates, and remote diagnostics.

IC Role / Device Role / Timing Role: Hub managing USB HDD recording (5 Gbps), firmware update stick (480 Mbps), and service dongle (12 Mbps).

Use Value: Four independent Multi-TT channels prevent bandwidth contention between recording and update tasks.

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
CYUSB3326-BVXC	6-port variant: 2 × SS + 2 × SS + 2 × USB 2.0; no shared link; 88-QFN only	Targeted at mid-tier docks with fewer embedded peripherals; lacks 4-port shared-link scalability	Select when 6 ports suffice and shared-link functionality is unnecessary - lower pin count and BOM cost
CYUSB3314-BVXC	4-port USB 3.2 Gen 1 hub; 88-QFN; supports shared link and BC v1.2 but no ACA-Dock or ghost charging	Suitable for cost-constrained embedded hubs where smartphone-as-host use case is excluded	Choose for simpler designs needing shared link and charging, but not ACA-Dock - smaller footprint and reduced firmware complexity

Compared with CYUSB3326-BVXC and CYUSB3314-BVXC, the CYUSB3328-BVXC uniquely delivers 8-port density with full shared-link support, ghost charging across all ports, and ACA-Dock - making it the only option for high-end docking stations requiring simultaneous embedded SS + removable USB 2.0 connectivity and mobile-host interoperability.

Availability

CYUSB3328-BVXC is available at Aetrix Electronics and suitable for docking stations, industrial monitors, digital televisions, and set-top boxes requiring stable component supply, industrial temperature operation, and USB-IF certified hub functionality.

Supply support for CYUSB3328-BVXC 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 leader specializing in power management, sensing, connectivity, and security ICs for automotive, industrial, and consumer applications.

CYUSB3328-BVXC belongs to the EZ-USB™ HX3 family - designed specifically for high-density, feature-rich USB hub applications in space-constrained embedded systems requiring intelligent power delivery and flexible configuration.

FAQ

Does CYUSB3328-BVXC require an external EEPROM for basic operation?

No. CYUSB3328-BVXC supports pin-strapped configuration for VID, PID, port count, and power switch modes - enabling full USB enumeration and hub operation without external memory. An I2C EEPROM is optional for advanced features like custom string descriptors or field firmware updates.

What is the maximum current supported per downstream port in BC v1.2 mode?

Each downstream port delivers up to 1.5 A in Dedicated Charging Port (DCP) mode, compliant with USB Battery Charging v1.2. This applies during ghost charging (no upstream host) and ACA-Dock operation, with overcurrent protection enforced by internal port controllers.

Can CYUSB3328-BVXC operate without a 26 MHz crystal?

No. The device requires a 26 MHz fundamental-mode crystal connected to XIN/XOUT for USB 2.0 PHY clock generation and system timing. The SS PHY uses a PLL derived from this reference; no internal oscillator or alternative clock source is provided.

Is shared link supported on all eight downstream ports?

Yes. All four USB 3.2 Gen 1 downstream ports (DS1–DS4) support shared link - each can concurrently connect one SuperSpeed device and one USB 2.0 device. The four USB 2.0-only ports (DS5–DS8) do not support shared link and operate as standard USB 2.0 hubs.

CYUSB3328-BVXC 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:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 100-VFBGA (6x6)

CYUSB3328-BVXC FAQ

1.How can I place an order for CYUSB3328-BVXC through Aetrix?

Please submit a Request for Quotation (RFQ) for CYUSB3328-BVXC 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 CYUSB3328-BVXC reliable?

The price and inventory of CYUSB3328-BVXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB3328-BVXC is usually 5 days.

3.What payment methods are accepted for CYUSB3328-BVXC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB3328-BVXC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CYUSB3328-BVXC?

CYUSB3328-BVXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CYUSB3328-BVXC 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 CYUSB3328-BVXC?

For technical support, including CYUSB3328-BVXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB3328-BVXC requirements.

6.How does Aetrix verify that CYUSB3328-BVXC is sourced from the original manufacturer or authorized distributors?

All CYUSB3328-BVXC 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 CYUSB3328-BVXC meets industry standards.

7.What is the process for return or replacement of CYUSB3328-BVXC?

All CYUSB3328-BVXC units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB3328-BVXC, 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 CYUSB3328-BVXC part is unused and in its original packaging.

Return procedure for CYUSB3328-BVXC:

1.Submit a request within 90 days.

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

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