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Texas Instruments TUSB9261IPAPQ1
- Part No.:
- TUSB9261IPAPQ1
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 64-PowerTQFP
- Datasheet:
-
TUSB9261IPAPQ1.pdf
- Description:
- IC INTFACE SPECIALIZED 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,864
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Product details
Overview
TUSB9261IPAPQ1 from Texas Instruments is an AEC-Q100 qualified USB 3.0 to SATA II bridge IC with integrated ARM Cortex-M3 microcontroller, supporting UASP and BOT protocols for HDD/SSD connectivity at 3.0 Gbps (SATA Gen II) and SuperSpeed USB (5 Gbps), operating across –40°C to 85°C in automotive infotainment and external storage systems.
For engineers reviewing the TUSB9261IPAPQ1 datasheet, TUSB9261IPAPQ1 pinout, TUSB9261IPAPQ1 application, or TUSB9261IPAPQ1 equivalent, key selection considerations include SATA Gen II hot-plug support, dual-protocol firmware (UASP/BOT), integrated SPI flash interface for field-upgradable firmware, and automotive-grade ESD robustness (CDM Level C3).
Technical Context
The TUSB9261IPAPQ1 implements a full USB 3.0 device controller with SS/HS/FS PHYs and a SATA II AHCI-compliant host bus adapter, enabling bidirectional bridging between USB and SATA domains without external microcontroller intervention. Its ARM Cortex-M3 core executes boot code from ROM and loads application firmware from external SPI flash memory.
It supports dynamic USB power state management (U0–U3), SATA link training (1.5/3.0 Gbps), and configurable GPIO/HID interfaces for user control and status reporting. The device uses adaptive equalization and spread-spectrum clock generation to meet USB 3.0 jitter compliance requirements with 20–40 MHz reference clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Interface | USB 3.0 device controller with SS/HS/FS PHYs; enables backward-compatible connection to USB 2.0/3.0 hosts without protocol translation overhead. |
| SATA Interface | SATA II (3.0 Gbps) with AHCI support and hot-plug detection; compatible with ATA/ATAPI-8 devices including HDDs, SSDs, and optical drives. |
| Data Protocols | USB Attached SCSI Protocol (UASP) + Mass Storage Class Bulk-Only Transport (BOT); UASP enables command queuing and reduced latency vs. BOT-only operation. |
| Core Processor | ARM Cortex-M3 microcontroller with 64 kB ROM and 80 kB RAM; executes firmware for USB/SATA protocol stack, GPIO control, and HID-based configuration. |
| Operating Temp | –40°C to +85°C industrial range; qualified per AEC-Q100 Grade 3 for automotive console and convenience port applications. |
| Power Rails | 1.1 V (VDD), 3.3 V digital (VDD33), and 3.3 V analog (VDDA33); no strict power sequencing required, simplifying board-level power design. |
| ESD Rating | CDM Level C3 (450 V on USB_R1, 500 V on non-corner pins); meets automotive ESD immunity requirements for in-vehicle deployment. |
Pinout & Package
Package: 64-pin HTQFP (PAP), RoHS-compliant, thermal pad exposed on bottom, MSL Level-3 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GRSTz (Pin 4) | Global Reset Input | Active-low synchronous reset that initializes all internal registers; must be held low ≥2 ms during power-up for reliable boot. |
| USB_SSTXP/M (Pins 43/42) | SuperSpeed TX Differential Pair | 5-Gbps differential output pair for USB 3.0 upstream communication; requires controlled 90-Ω impedance routing. |
| SATA_TXP/M (Pins 57/56) | SATA Gen II TX Differential Pair | 3-Gbps differential output to SATA device; default firmware swaps TXP/TXM for PCB routing ease-verify against TI reference design. |
| GPIO0–GPIO11 (Pins 8–16, 21–23) | Configurable I/O | 12 general-purpose pins; default firmware assigns GPIO7 as SS connection indicator, GPIO3 as remote wake button input, and GPIO11 as power fault monitor. |
| SPI_CS0/CS1/CS2 (Pins 21/22/23) | SPI Peripheral Select | Three chip-select outputs enable daisy-chained SPI peripherals (e.g., flash, sensors); CS0 dedicated to firmware storage. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated ARM Cortex-M3 Core | Enables full USB/SATA protocol stack execution without external MCU, reducing BOM count and system latency. |
| UASP + BOT Dual-Protocol Support | Delivers up to 70% higher throughput vs. BOT-only mode for SSDs; maintains legacy BOT compatibility for optical drives and bootable media. |
| Automotive Qualification (AEC-Q100) | Validated for automotive environments including temperature cycling, vibration, and ESD stress-suitable for head unit and rear-seat entertainment systems. |
| HID-Based Firmware Update | Allows field firmware upgrades via USB HID interface using TI-provided host application-no JTAG or external programmer required. |
| Configurable GPIO & PWM Outputs | 12 GPIOs and 2 PWM channels drive status LEDs (e.g., disk activity, USB power state), enabling real-time visual diagnostics without host software. |
Applications
| Automotive Infotainment Console | External HDD/SSD Docking Station |
|---|---|
Use Scenario: Integration into vehicle head units to enable plug-and-play connection of portable SATA storage for media playback and firmware updates. IC Role / Device Role / Timing Role: USB 3.0 to SATA bridge providing protocol translation, link training, and power management coordination between USB host and SATA device. Use Value: Enables high-bandwidth video streaming from SSDs while maintaining AEC-Q100 reliability and supporting UASP for low-latency access. | Use Scenario: Standalone enclosure converting SATA HDDs/SSDs into USB 3.0 mass storage devices for desktop and laptop backup. IC Role / Device Role / Timing Role: Embedded bridge controller managing USB enumeration, SATA negotiation, and TRB-based data transfer scheduling. Use Value: Delivers near-native SATA performance over USB via UASP, eliminating bottlenecks seen in legacy BOT-only bridges. |
| HDD-Based Portable Media Player | Automotive Convenience Port |
Use Scenario: Compact media player using 2.5-inch HDD for high-capacity music/video library with USB 3.0 sync capability. IC Role / Device Role / Timing Role: Bridge IC handling USB mass storage class descriptors, BOT/UASP interface switching, and SATA hot-plug event signaling. Use Value: Supports seamless media file transfers at >300 MB/s (UASP) while maintaining compatibility with Windows/macOS/Linux USB stacks. | Use Scenario: In-vehicle USB port supporting both data transfer and charging for passenger devices connected to SATA-based storage modules. IC Role / Device Role / Timing Role: Automotive-qualified bridge enabling secure, high-reliability SATA-to-USB conversion in constrained space and thermal environments. Use Value: Meets automotive EMC and thermal specs (TJ ≤105°C) while delivering USB 3.0 bandwidth for fast firmware updates and diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-to-SATA bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASM1083-ABZQ | PCIe-to-PCI bridge controller; lacks integrated USB/SATA logic, requires external USB 3.0 host controller and SATA controller ICs. | Targeted at PCIe expansion cards-not a direct USB-to-SATA bridge solution. | Select only if building custom PCIe-based docking architecture with separate USB and SATA controllers. |
| TUSB9261IPAP | Industrial-grade (non-automotive) variant; identical functionality but not AEC-Q100 qualified, rated for 0°C to 70°C only. | Suitable for commercial docking stations and consumer electronics where automotive qualification is unnecessary. | Choose for cost-sensitive non-automotive designs requiring same firmware and pinout compatibility. |
Compared with ASM1083-ABZQ, TUSB9261IPAPQ1 delivers complete single-chip USB 3.0-to-SATA bridging with UASP acceleration and automotive qualification; compared with TUSB9261IPAP, it adds AEC-Q100 Grade 3 validation and extended temperature support-critical for under-hood or dashboard-mounted systems.
Availability
TUSB9261IPAPQ1 is available at Aetrix Electronics and suitable for automotive infotainment consoles, external HDD/SSD docking stations, and HDD-based portable media players requiring stable component supply and long-term lifecycle support.
Supply support for TUSB9261IPAPQ1 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 technologies, with leadership in automotive, industrial, and communications markets.
The TUSB9261-Q1 product line delivers certified USB-to-SATA bridge solutions targeting automotive-grade external storage interfaces, emphasizing protocol compliance, field-upgradable firmware, and robust operation in harsh environments.
FAQ
What is the primary function of the TUSB9261IPAPQ1?
The TUSB9261IPAPQ1 is a USB 3.0 to SATA II bridge IC that enables direct connection of SATA hard disk drives (HDDs), solid-state drives (SSDs), and optical drives to a USB 3.0 host. It integrates an ARM Cortex-M3 microcontroller, USB 3.0 device controller, and SATA II AHCI-compliant interface, executing firmware to support both USB Attached SCSI Protocol (UASP) and Mass Storage Class Bulk-Only Transport (BOT). This allows high-speed, low-latency data transfer while maintaining full compatibility with standard USB host stacks and SATA devices.
Does the TUSB9261IPAPQ1 support automotive applications?
Yes, the TUSB9261IPAPQ1 is explicitly qualified for automotive use under AEC-Q100 Grade 3 standards, covering operating temperatures from –40°C to +85°C and including CDM ESD classification Level C3. It is designed for integration into automotive infotainment consoles, convenience ports, and rear-seat entertainment systems where reliability under thermal, vibration, and electrical stress is critical. The device's qualification documentation, thermal metrics (θJA = 30.2°C/W), and automotive-specific features like HID-based firmware update confirm its suitability for vehicle platforms.
What USB and SATA protocols does the TUSB9261IPAPQ1 support?
The TUSB9261IPAPQ1 supports USB 3.0 SuperSpeed (5 Gbps), USB 2.0 High-Speed (480 Mbps), and Full-Speed (12 Mbps) via integrated PHYs and device controller. On the SATA side, it complies with SATA II (3.0 Gbps) and supports the Serial ATA Specification Revision 2.6, including hot-plug, native command queuing (NCQ), and AHCI. Firmware implements both USB Attached SCSI Protocol (UASP) for optimized performance and Mass Storage Class Bulk-Only Transport (BOT) for broad OS compatibility-including all 13 error cases defined in the BOT specification.
Can the TUSB9261IPAPQ1 firmware be updated in the field?
Yes, the TUSB9261IPAPQ1 supports field firmware updates via its USB Human Interface Device (HID) interface. Using a TI-provided host application, users can load new firmware images from a host PC without requiring JTAG debuggers or external programming hardware. The device boots from internal ROM, loads firmware from external SPI flash by default, but falls back to HID mode when no valid image is present-enabling recovery and feature upgrades throughout the product lifecycle. This capability is fully implemented in the default TI firmware shipped with the TUSB9261IPAPQ1.
What package and thermal characteristics does the TUSB9261IPAPQ1 have?
The TUSB9261IPAPQ1 is housed in a 64-pin HTQFP (PAP) package with an exposed thermal pad, RoHS-compliant, and rated for MSL Level-3 (260°C peak reflow). Its thermal resistance values include θJA = 30.2°C/W (junction-to-ambient), θJCbot = 0.9°C/W (junction-to-case bottom), and ψJB = 6.1°C/W (junction-to-board), confirming effective heat dissipation in compact automotive and docking applications. The device operates reliably up to TJ = 105°C, with recommended ambient range –40°C to +85°C, making it suitable for thermally constrained enclosures and vehicle cabins.
TUSB9261IPAPQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- HDD, CD, DVD Drive
- Interface:
- -
- Voltage - Supply:
- 1.1V, 3.3V
- Supplier Device Package:
- 64-HTQFP (10x10)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
TUSB9261IPAPQ1 FAQ
1.How can I place an order for TUSB9261IPAPQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TUSB9261IPAPQ1 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 TUSB9261IPAPQ1 reliable?
The price and inventory of TUSB9261IPAPQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUSB9261IPAPQ1 is usually 5 days.
3.What payment methods are accepted for TUSB9261IPAPQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUSB9261IPAPQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUSB9261IPAPQ1?
TUSB9261IPAPQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUSB9261IPAPQ1 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 TUSB9261IPAPQ1?
For technical support, including TUSB9261IPAPQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUSB9261IPAPQ1 requirements.
6.How does Aetrix verify that TUSB9261IPAPQ1 is sourced from the original manufacturer or authorized distributors?
All TUSB9261IPAPQ1 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 TUSB9261IPAPQ1 meets industry standards.
7.What is the process for return or replacement of TUSB9261IPAPQ1?
All TUSB9261IPAPQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TUSB9261IPAPQ1, 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 TUSB9261IPAPQ1 part is unused and in its original packaging.
Return procedure for TUSB9261IPAPQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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