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Infineon Technologies CYUSB4347-BZXC
- Part No.:
- CYUSB4347-BZXC
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 192-LFBGA
- Datasheet:
-
CYUSB4347-BZXC.pdf
- Description:
- USB SUPER SPEED HUBS
- Quantity:
- Payment:
- Shipping:
Inventory:995
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Product details
Overview
CYUSB4347-BZXC from Infineon Technologies (formerly Cypress) is a USB 3.1 Gen 2 Type-C hub with integrated Power Delivery 3.0 controllers, supporting 7 downstream ports (5 × SS @ 10 Gbps + 2 × HS), upstream Type-C/Type-B configuration, and dock management. It integrates Arm® Cortex®-M0 CPU, crypto block (AES/SHA/CRC), and firmware-upgradable USB Billboard functionality for notebook docking stations.
For engineers reviewing the CYUSB4347-BZXC datasheet, CYUSB4347-BZXC pinout, CYUSB4347-BZXC application, or CYUSB4347-BZXC equivalent, key selection criteria include dual PD port support (US + DS1), Ghost Charge™ capability, signed firmware update via DMC, and 192-ball BGA (12 mm × 12 mm, 0.8 mm pitch) package compatibility with high-density dock PCB layouts.
Technical Context
The device implements two independent hub controllers: a USB 3.1 Gen 2 (10 Gbps) SS hub with store-and-forward packet architecture and full-duplex operation, and a USB 2.0 hub with seven transaction translators (Multi-TT), LPM states (L0–L3), and remote wake-up signaling. Both hubs are managed by a shared Arm Cortex-M0 subsystem.
Its dual USB-PD 3.0 controllers integrate baseband PHYs, programmable RP (DFP) and RD (UFP) termination, BMC/4b5b encoding, and chunked Extended Message handling for backward compatibility with PD 2.0 systems. The Dock Management Controller supports I2C-based dynamic port enable/disable and full-speed USB-based firmware updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Data Rate | 10 Gbps (SS Gen 2) on 5 DS ports; 480 Mbps (HS) on 2 DS ports - enables dual 4K@60Hz video + high-bandwidth peripherals over single Type-C uplink. |
| PD Ports | 2 (US + DS1), compliant with USB PD 3.0 - supports dynamic power profile negotiation, extended messages, and dead-battery charging via RD detection. |
| Package | 192-ball BGA, 12 mm × 12 mm, 0.8 mm pitch - optimized for compact, thermally constrained docking station PCBs with routing density constraints. |
| CPU Core | Arm Cortex-M0, 32-bit, with SWD debug and Deep Sleep wakeup controller - executes PD policy engine, DMC, and Billboard functions without external MCU. |
| Crypto Acceleration | AES-128/256, SHA-256, CRC, PRNG hardware blocks - enables secure signed firmware validation and trusted field upgrades per Infineon's security framework. |
| Charging Standards | USB PD 3.0, BC 1.2, Apple Charging - allows interoperable fast charging across laptops, tablets, and legacy accessories without protocol translation ICs. |
Pinout & Package
Package: 192-ball BGA (12 mm × 12 mm, 0.8 mm pitch), RoHS-compliant, thermal pad exposed on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1_P0 / CC2_P0 | Type-C Configuration Channel | Detect plug orientation, establish DRP role, and initiate PD communication on upstream port. |
| TXP1_P1 / TXN1_P1 | USB 3.1 Gen 2 Differential Pair | Transmit lane for first SuperSpeed downstream port (DS1); requires controlled 85 Ω differential impedance routing. |
| RXP2_P2 / RXN2_P2 | USB 3.1 Gen 2 Differential Pair | Receive lane for second SuperSpeed downstream port (DS2); isolated from TX lanes to prevent crosstalk-induced eye degradation. |
| VCONN_MON_P0 / VCONN_MON_P1 | VCONN Monitoring Input | Enables active cable detection and VCONN power management for e-marked USB-C cables in dock applications. |
| I2C_SCL1 / I2C_SDA1 | Dock Management I2C Bus | Primary interface for host EC to configure port enable/disable, read status, and trigger firmware updates to DMC/PD/HUB blocks. |
Key Features
| Feature | Design Value |
|---|---|
| Ghost Charge™ | Delivers 5 V/0.9 A charging on DS port even when upstream is unconnected - enables peripheral battery top-up during laptop sleep or disconnection. |
| Signed Firmware Update | Uses RSA-2048/SHA-256 verified payloads over USB - prevents unauthorized firmware injection and ensures supply-chain integrity for OEM dock production. |
| Integrated Dock Management Controller | Full-speed USB 2.0 device controller with vendor interface - eliminates need for separate microcontroller in dock designs, reducing BOM count and firmware development effort. |
| USB Billboard Class Support | Reports USB-C alternate mode failures (e.g., DP/HDMI handshake timeout) to host OS via standardized descriptor - improves end-user diagnostics without custom driver development. |
Applications
| USB-C Docking Station | Thunderbolt-Compatible Dock |
|---|---|
Use Scenario: Multi-peripheral expansion for ultrabooks via single USB-C cable, delivering video (DP Alt Mode), Ethernet, audio, and storage. IC Role / Device Role / Timing Role: Central hub controller managing USB 3.1 Gen 2 data routing, PD negotiation, and dock system management. Use Value: Replaces five discrete ICs (2× USB 3.0 hubs, 2× PD controllers, DMC) - reduces PCB area by >40% and eliminates inter-IC timing skew issues. | Use Scenario: Thunderbolt 3 dock where HX3PD handles USB data lanes while Thunderbolt controller manages PCIe/DP tunnels. IC Role / Device Role / Timing Role: Dedicated USB subsystem manager, offloading USB enumeration, charging, and firmware updates from main TB3 controller. Use Value: Enables concurrent USB 3.1 Gen 2 bandwidth (10 Gbps) and Thunderbolt 3 (40 Gbps) without protocol contention - validated in Figure 2 reference design. |
| USB-C Monitor with Hub | Enterprise Desktop Dock |
Use Scenario: All-in-one monitor integrating USB-C uplink, built-in USB-A/HDMI/ethernet ports, and laptop charging. IC Role / Device Role / Timing Role: Dual-role PD controller (US as sink, DS1 as source) enabling bidirectional power delivery and display data tunneling. Use Value: Supports USB PD 3.0 Programmable Power Supply (PPS) for precise voltage control - critical for stable charging of diverse laptop models. | Use Scenario: Fixed-location enterprise dock with security-enforced firmware updates and peripheral access control. IC Role / Device Role / Timing Role: Secure boot and runtime authentication via hardware crypto block, enforcing signed firmware before execution. Use Value: Meets NIST SP 800-193 requirements for platform firmware resiliency - prevents persistent malware persistence in corporate IT environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-C hub with PD controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYUSB4357-BZXC | Identical silicon with signed firmware update capability enabled in ROM - same pinout, timing, and electrical specs. | Required where enterprise IT mandates cryptographic verification of all firmware updates before installation. | Select CYUSB4357-BZXC if signed firmware enforcement is mandatory; otherwise CYUSB4347-BZXC reduces cost and simplifies qualification. |
| TUSB8041AIZAYR | USB 3.0 (5 Gbps) hub only, no integrated PD controller or DMC - requires external PD ICs and MCU for dock management. | Suitable for cost-sensitive docks without PD or advanced firmware features, but increases BOM and design complexity. | Choose only when Gen 2 bandwidth and integrated PD/DMC are not required - avoids over-specification and unnecessary certification overhead. |
Compared with CYUSB4357-BZXC, CYUSB4347-BZXC omits factory-provisioned RSA key storage for signed updates, reducing unit cost while retaining identical USB/PD functionality. Against TUSB8041AIZAYR, it delivers double bandwidth, eliminates external PD controllers, and embeds dock intelligence - cutting total system component count by ≥30%.
Availability
CYUSB4347-BZXC is available at Aetrix Electronics and suitable for USB-C docking stations, enterprise desktop docks, USB-C monitors with hub functionality, and Thunderbolt-compatible expansion systems requiring stable component supply across multi-year production cycles.
Supply support for CYUSB4347-BZXC 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 global semiconductor leader headquartered in Munich, Germany, specializing in power systems, sensors, and connectivity solutions for automotive, industrial, and IoT markets.
CYUSB4347 belongs to the HX3PD family - purpose-built to consolidate USB-C hub, PD, and dock management functions into a single die for high-reliability, space-constrained docking applications.
FAQ
Does CYUSB4347-BZXC support USB Power Delivery 3.0 Extended Messages?
Yes. The integrated PD controllers support Extended Messages up to 260 bytes per USB PD 3.0 specification. A chunking mechanism automatically segments messages for compatibility with PD 2.0 hosts, ensuring interoperability without firmware modification.
What is the function of the DMC_P24 and DMC_P25 pins?
DMC_P24 and DMC_P25 are dedicated GPIOs assigned to the Dock Management Controller for hardware-level port enable/disable control. They allow an external embedded controller to assert physical reset or power-gating signals to individual downstream ports via I2C command, enabling dynamic power management.
Can CYUSB4347-BZXC operate without external SPI flash memory?
No. The device requires external SPI flash for boot-time firmware loading. Internal ROM contains only bootloader code; full hub, PD, and DMC firmware images reside in external SPI flash, which must be connected to SPI_MISO_DMC, SPI_MOSI_DMC, SPI_SS_DMC, and SPI_CLK_DMC pins.
Is the 192-ball BGA package lead-free and RoHS-compliant?
Yes. CYUSB4347-BZXC uses a lead-free, RoHS-compliant 192-ball BGA package with matte tin surface finish. The package meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and supports standard Pb-free reflow profiles (peak temperature ≤260°C).
CYUSB4347-BZXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 192-LFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- USB 3.1 Hub Controller
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- External Program Memory
- Controller Series:
- CYUSB
- RAM Size:
- -
- Interface:
- GPIO, I2C, SPI
- Number of I/O:
- 11
- Voltage - Supply:
- 1.14V ~ 1.26V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 192-FBGA (12x12)
CYUSB4347-BZXC FAQ
1.How can I place an order for CYUSB4347-BZXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CYUSB4347-BZXC 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 CYUSB4347-BZXC reliable?
The price and inventory of CYUSB4347-BZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYUSB4347-BZXC is usually 5 days.
3.What payment methods are accepted for CYUSB4347-BZXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYUSB4347-BZXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYUSB4347-BZXC?
CYUSB4347-BZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYUSB4347-BZXC 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 CYUSB4347-BZXC?
For technical support, including CYUSB4347-BZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYUSB4347-BZXC requirements.
6.How does Aetrix verify that CYUSB4347-BZXC is sourced from the original manufacturer or authorized distributors?
All CYUSB4347-BZXC 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 CYUSB4347-BZXC meets industry standards.
7.What is the process for return or replacement of CYUSB4347-BZXC?
All CYUSB4347-BZXC units undergo pre-shipment inspection (PSI). If there is an issue with CYUSB4347-BZXC, 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 CYUSB4347-BZXC part is unused and in its original packaging.
Return procedure for CYUSB4347-BZXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYUSB4347-BZXC Tags
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