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Texas Instruments TUSB7340RKMR
- Part No.:
- TUSB7340RKMR
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 100-WQFN Dual Rows, Exposed Pad
- Datasheet:
-
TUSB7340RKMR.pdf
- Description:
- IC HUB CONTROLLER USB 100WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,932
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Product details
Overview
TUSB7340RKMR from Texas Instruments is a USB 3.0-compliant xHCI host controller IC implementing PCIe Gen2 x1 upstream interface and supporting four independent SuperSpeed USB downstream ports with per-port power control, overcurrent detection, and configurable transmit swing/de-emphasis. It operates with 1.1V core and 3.3V I/O supplies, integrates adaptive receiver equalization, and requires no external flash for default configuration-used in rack servers, SAN/HBA cards, and high-performance desktop motherboards.
For engineers reviewing the TUSB7340RKMR datasheet, TUSB7340RKMR pinout, TUSB7340RKMR application, or TUSB7340RKMR equivalent, key selection criteria include PCIe Gen2 x1 host interface compatibility, four-port USB 3.0 xHCI compliance, per-port power/overcurrent management, internal spread-spectrum clocking, and WQFN-MR 100-pin thermal-pad package layout requirements.
Technical Context
The TUSB7340RKMR implements the xHCI 1.0 specification with full support for USB 3.0 SuperSpeed (5 Gbps), high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) signaling across all four downstream ports. Its PCIe Gen2 x1 interface provides 5 GT/s link speed with MSI-X interrupt support and standard PCI Express configuration space.
Each downstream port features independent enable/disable control, programmable transmit swing (16 settings, 2.7–1253 mVpp AC-coupled), de-emphasis (16 levels, 0–69.3% amplitude reduction), and adaptive equalization with FTC-reversed mode as default for optimal channel loss compensation. Internal spread-spectrum generation enables low-cost crystal or oscillator input (100 MHz differential REFCLK or 24/48 MHz single-ended).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | PCIe Gen2 x1 upstream; USB 3.0 xHCI-compliant downstream |
| Downstream Ports | 4 independent USB 3.0 SuperSpeed ports with HS/FS/LS backward compatibility |
| Power Supplies | 1.1V core (±5%/+10%), 3.3V I/O and analog rails; no external flash required |
| Thermal Resistance | RθJA = 25.6°C/W (WQFN-MR 100-pin); exposed thermal pad required |
| ESD Rating | HBM ±1500 V, CDM ±500 V per JEDEC standards |
| Operating Temp | 0°C to 70°C (commercial); industrial version supports –40°C to +85°C |
| Power Consumption | 1303.5 mW max (4 SS devices active); 79.35 mW in system suspend |
Pinout & Package
Package: WQFN-MR (RKM), 100-pin, 9 mm × 9 mm, 0.5 mm pitch, exposed thermal pad (VSS). Pin-compatible with TUSB7320 but supports four downstream ports.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PCIE_TXP / PCIE_TXN | PCIe Gen2 x1 differential transmitter | Drives 5 GT/s upstream link; requires controlled-impedance 85 Ω differential routing |
| PCIE_RXP / PCIE_RXN | PCIe Gen2 x1 differential receiver | Receives 5 GT/s upstream link; includes built-in termination and equalization |
| USB_SSTXP_DN1–DN4 / USB_SSTXN_DN1–DN4 | SuperSpeed USB differential transmitters (4 ports) | Per-port 5 Gbps output; swing and de-emphasis individually configurable via registers |
| USB_SSRXP_DN1–DN4 / USB_SSRXN_DN1–DN4 | SuperSpeed USB differential receivers (4 ports) | Adaptive equalizer per port; FTC-reversed mode enabled by default for channel loss compensation |
| PWRON1#–PWRON4# | Active-low downstream port power control outputs | Directly drive external load switches; polarity configurable via PWRON_POLARITY bit |
| OVERCUR1#–OVERCUR4# | Active-low downstream overcurrent detection inputs | Open-drain compatible; logic low indicates overcurrent condition on respective port |
| GRST# | Global reset input | Must be held asserted until all power rails and 48 MHz clock (if used) are stable |
| FREQSEL | Oscillator frequency select strap | Must be low for normal operation; configures PLL multiplier for 100 MHz REFCLK or 48 MHz crystal |
Key Features
| Feature | Design Value |
|---|---|
| PCIe Gen2 x1 Host Interface | Enables direct integration into modern CPU/chipset platforms without bridge logic or firmware overhead |
| Four Independent USB 3.0 Ports | Eliminates need for hub ICs in multi-peripheral systems; each port supports hot-plug, suspend/resume, and bandwidth arbitration |
| Per-Port Transmit Control | 16-level swing and 16-level de-emphasis allow precise signal integrity tuning per trace length and topology |
| Adaptive Receiver Equalization | FTC-reversed algorithm dynamically compensates up to 20 dB channel loss at 2.5 GHz, enabling robust 5 Gbps links over FR4 backplanes |
| No External Flash Required | Reduces BOM cost and boot dependency; optional serial EEPROM supports custom vendor/device descriptors and port mapping |
| Integrated Spread-Spectrum Clocking | Meets USB and PCIe EMI requirements without external components; supports low-cost 24/48 MHz crystals or 100 MHz oscillators |
Applications
| Rack Server USB Expansion | SAN/HBA Card Integration |
|---|---|
Use Scenario: Adding four dedicated USB 3.0 ports to a 1U server node for BMC console, firmware update dongles, and peripheral diagnostics. IC Role / Device Role / Timing Role: xHCI host controller managing PCIe-to-USB protocol translation, enumeration, and bandwidth scheduling across four concurrent SuperSpeed endpoints. Use Value: Eliminates reliance on chipset-integrated USB controllers with limited port count or legacy xHCI implementations lacking per-port power control. |
Use Scenario: Embedding USB 3.0 connectivity on a Fibre Channel or SAS HBA for service processor access, LED control, and field-upgrade interfaces. IC Role / Device Role / Timing Role: Standalone USB host controller operating independently of storage controller logic; provides isolated, low-latency USB path for out-of-band management. Use Value: Enables secure, dedicated USB channel for firmware updates and debug without sharing bandwidth or interrupt resources with primary storage traffic. |
| High-Performance Desktop Motherboard | Tower Server Front-Panel Hub |
Use Scenario: Implementing native USB 3.0 front-panel headers on a workstation-class motherboard with discrete GPU and multi-channel memory. IC Role / Device Role / Timing Role: PCIe-attached xHCI controller providing full SuperSpeed bandwidth to front-panel ports while offloading CPU PCIe root complex resources. Use Value: Delivers guaranteed 400 MB/s aggregate throughput across four front-panel ports without competing for chipset DMI bandwidth. |
Use Scenario: Centralized USB 3.0 hub on a tower server chassis front bezel supporting keyboard, webcam, and diagnostic USB stick. IC Role / Device Role / Timing Role: Dedicated host controller with independent port enable/disable and overcurrent protection per front-panel connector. Use Value: Prevents front-panel short circuits from disabling entire USB subsystem; enables hot-swap-safe user-accessible ports with individual power gating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 3.0 host controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASMedia ASM1083 | PCIe Gen2 x1 bridge only; requires separate USB 3.0 host controller (e.g., NEC/Renesas µPD720200); no integrated xHCI | Higher BOM cost and board area; adds latency and driver complexity due to dual-chip architecture | Select only when legacy PCIe-to-PCI bridge functionality is required alongside USB 3.0 expansion |
| Intel JHL6540 | Thunderbolt 3 controller with integrated USB 3.1 Gen2 (10 Gbps); requires Thunderbolt PHY and retimer; higher power and cost | Supports daisy-chained peripherals and DisplayPort tunneling; over-engineered for pure USB 3.0 host use cases | Choose only when Thunderbolt ecosystem compatibility or 10 Gbps USB bandwidth is mandatory |
Compared with ASMedia ASM1083 and Intel JHL6540, the TUSB7340RKMR delivers integrated xHCI functionality in a single chip with lower power, smaller footprint, and simpler driver stack-making it optimal for cost-sensitive, space-constrained USB 3.0 host expansion where Thunderbolt or PCIe bridging is unnecessary.
Availability
TUSB7340RKMR is available at Aetrix Electronics and suitable for rack server expansion, SAN/HBA card integration, and high-performance desktop motherboard designs requiring stable component supply, long-term lifecycle support, and production-ready qualification.
Supply support for TUSB7340RKMR 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity solutions with leadership in industrial, automotive, and communications markets.
The TUSB73x0 product line was designed specifically for PCIe-based USB 3.0 host expansion in space-constrained, thermally demanding environments such as servers, storage adapters, and high-end computing platforms.
FAQ
What is the PCIe interface specification supported by the TUSB7340RKMR?
The TUSB7340RKMR implements a PCIe Gen2 x1 interface compliant with the PCI Express Base Specification Revision 2.0, supporting 5 GT/s data rate, MSI-X interrupts, and standard configuration space. It does not support PCIe Gen3 or wider lanes. The TUSB7340RKMR must be connected to a Gen2-capable root port to achieve full bandwidth.
Does the TUSB7340RKMR require an external EEPROM for basic operation?
No, the TUSB7340RKMR operates without external EEPROM using factory-default configuration stored in internal ROM. An optional serial EEPROM can be added to customize vendor/device IDs, port mapping, or power-on defaults-but it is not required for USB enumeration or xHCI host functionality.
How many USB 3.0 SuperSpeed ports does the TUSB7340RKMR support?
The TUSB7340RKMR supports exactly four independent USB 3.0 SuperSpeed (5 Gbps) downstream ports, each with full xHCI-compliant control, including per-port enable/disable, power switching, overcurrent detection, and signal integrity tuning. This distinguishes it from the pin-compatible TUSB7320, which supports only two ports.
What package type and thermal requirements apply to the TUSB7340RKMR?
The TUSB7340RKMR uses a WQFN-MR (RKM) 100-pin package with 9 mm × 9 mm body and exposed thermal pad. Its RθJA is 25.6°C/W; proper PCB layout requires soldering the thermal pad to a solid copper plane with ≥6 thermal vias to internal ground layers to maintain junction temperature ≤105°C under full load.
Can the TUSB7340RKMR support USB 2.0 and USB 1.1 devices on its downstream ports?
Yes, the TUSB7340RKMR fully supports high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) USB devices on all four downstream ports through integrated UTMI+ PHY logic. Each port automatically negotiates and switches between SuperSpeed and legacy USB modes without host software intervention.
TUSB7340RKMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-WQFN Dual Rows, Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Host Controller
- Interface:
- USB, PCIe
- Standards:
- USB 3.0
- Voltage - Supply:
- 1.1V, 3.3V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 100-WQFN-MR (9x9)
- Grade:
- -
- Qualification:
- -
TUSB7340RKMR FAQ
1.How can I place an order for TUSB7340RKMR through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB7340RKMR 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 TUSB7340RKMR reliable?
The price and inventory of TUSB7340RKMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB7340RKMR is usually 5 days.
3.What payment methods are accepted for TUSB7340RKMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB7340RKMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB7340RKMR?
TUSB7340RKMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB7340RKMR 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 TUSB7340RKMR?
For technical support, including TUSB7340RKMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB7340RKMR requirements.
6.How does Aetrix verify that TUSB7340RKMR is sourced from the original manufacturer or authorized distributors?
All TUSB7340RKMR 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 TUSB7340RKMR meets industry standards.
7.What is the process for return or replacement of TUSB7340RKMR?
All TUSB7340RKMR units undergo pre-shipment inspection (PSI). If there is an issue with TUSB7340RKMR, 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 TUSB7340RKMR part is unused and in its original packaging.
Return procedure for TUSB7340RKMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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