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Texas Instruments TSB42AA9IPZT
- Part No.:
- TSB42AA9IPZT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 100-TQFP
- Datasheet:
-
TSB42AA9IPZT.pdf
- Description:
- IC CONTROLLER LINK LAYER 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,505
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Product details
Overview
TSB42AA9IPZT from Texas Instruments is a 1394 link-layer controller implementing IEEE 1394a/1394-1995 compliance, supporting 100/200/400 Mbps serial bus data rates, automated SBP-2 transport protocol engine, and native ATA/ATAPI command translation for external storage devices including HDDs, DVD-RAMs, and CD-R/Ws.
For engineers reviewing the TSB42AA9IPZT datasheet, TSB42AA9IPZT pinout, TSB42AA9IPZT application, or TSB42AA9IPZT equivalent, key selection criteria include SBP-2 target controller hardware acceleration, embedded 8052 processor with 16K ROM, 576-byte transmit/receive control FIFOs, and TQFP-100 package compatibility with industrial storage bridge designs.
Technical Context
The TSB42AA9IPZT integrates a dedicated SBP-2 management agent and command agent in hardware, eliminating host CPU involvement in DMA transaction setup between ATA/ATAPI devices and the 1394 bus. It implements full IEEE 1394a-compliant physical layer arbitration and packet handling.
Its dual-bus external flash interface supports in-system firmware reprogramming without sockets, while the 2-wire serial EEPROM interface loads configuration ROM into 576-byte parameter RAM for fast response to IEEE 1394 configuration requests - enabling plug-and-play enumeration in SBP-2 target systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IEEE Compliance | IEEE Std 1394-1995 and IEEE P1394a compliant - ensures interoperability with legacy and enhanced FireWire hosts and peripherals. |
| Data Rates | 100/200/400 Mbps serial bus operation - supports backward-compatible negotiation and optimal bandwidth utilization per connected device capability. |
| FIFO Depth | 576-byte (128-quadlet) transmit and receive control FIFOs - buffers SBP-2 command/response traffic independently of ATA/ATAPI data transfers. |
| ATA/ATAPI Support | PIO modes 0–4, DMA modes 0–2, Ultra DMA modes 0–4 - enables direct connection to standard IDE storage without external timing logic. |
| Embedded Memory | 16K internal ROM + 576-byte parameter RAM - stores boot firmware and runtime configuration data for deterministic SBP-2 initialization. |
| Process Technology | 0.18 µm CMOS with embedded RAM/ROM - delivers low-power operation suitable for external bus-powered storage enclosures. |
Pinout & Package
TSB42AA9IPZT is housed in a space-saving 100-pin TQFP (PZT) package with 0.5 mm pitch, JEDEC MS-026 compliant, moisture sensitivity level 4 (260°C peak reflow, 72-hour floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | 1394 Reference Clock Input | Accepts 24.576 MHz crystal or oscillator input to synchronize 1394 PHY timing and SBP-2 frame generation. |
| RESET# | Active-Low Asynchronous Reset | Resets internal state machines, FIFO pointers, and configuration registers; requires ≥100 ns pulse width for reliable initialization. |
| CS#, RD#, WR# | ATA/ATAPI Bus Control | Directly interfaces with standard ATA host bus timing - no glue logic needed for PIO mode 4 or Ultra DMA mode 4 handshaking. |
| SCL, SDA | 2-Wire Serial Configuration Interface | Loads IEEE 1394 configuration ROM from external EEPROM into internal parameter RAM for automatic response to host read requests. |
| AS, DS#, R/W# | External Flash Memory Interface | Enables in-system firmware updates via parallel EPROM/Flash - supports write operations without socket removal or UV erasure. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware SBP-2 Target Engine | Offloads SBP-2 management agent, command agent, and data movement from host CPU - eliminates software driver latency in storage target enumeration and command execution. |
| Dual-Bus External Flash Interface | Separate address/data busses eliminate need for external latches - simplifies PCB layout and reduces BOM count for firmware development and field-upgradable storage products. |
| Automated Header Handling | Performs 1394 and SBP-2 header insertion/removal in hardware - ensures correct packet framing without firmware intervention during high-throughput streaming. |
| Configuration ROM Acceleration | Internal parameter RAM stores critical SBP-2 descriptors and IEEE 1394 node parameters - enables sub-100 µs response to host configuration reads during hot-plug enumeration. |
Applications
| External Hard Disk Enclosures | DVD/CD-RW Drive Adapters |
|---|---|
Use Scenario: Standalone FireWire-to-IDE adapter board connecting 3.5" SATA/IDE HDDs to legacy Mac or Windows PCs via IEEE 1394. IC Role / Device Role / Timing Role: Native 1394 link-layer controller acting as SBP-2 target - bridges FireWire packet traffic to ATA command sequences with hardware-accelerated DMA. Use Value: Enables plug-and-play storage expansion without host driver development; supports Ultra DMA Mode 4 for sustained 66 MB/s throughput to 7200 RPM drives. | Use Scenario: Compact FireWire-enabled optical drive module for digital video editing workstations requiring real-time capture and burn verification. IC Role / Device Role / Timing Role: SBP-2 target controller managing ATAPI command translation and 1394 isochronous channel allocation for time-critical media streaming. Use Value: Guarantees deterministic latency for CD/DVD command execution and buffer underrun protection via hardware FIFO management and burst-mode 400 Mbps transfer. |
| MO/ORBITAL Drive Interfaces | Industrial Data Archiving Systems |
Use Scenario: High-reliability magneto-optical drive subsystem used in medical imaging PACS for long-term DICOM file retention. IC Role / Device Role / Timing Role: IEEE 1394a-compliant link controller providing robust error recovery and CRC validation for archival-grade write verification over FireWire. Use Value: Ensures bit-accurate data integrity across extended write cycles using hardware CRC generation and SBP-2 status reporting - critical for regulatory compliance. | Use Scenario: Rack-mounted tape backup controller integrating LTO or DDS drives into enterprise NAS appliances with FireWire expansion ports. IC Role / Device Role / Timing Role: SBP-2 target controller coordinating multi-device command queuing and scatter-gather DMA for concurrent tape load/unload and data streaming. Use Value: Reduces host CPU overhead by >90% versus software-based SBP-2 stacks - enabling simultaneous backup jobs on resource-constrained embedded Linux platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1394 link-layer controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB42AA9APZTR | Same die, tape-and-reel packaging (1000-unit reel), identical electrical specs and pinout - differs only in packaging format and MSL rating. | No functional difference; selected for automated SMT assembly lines requiring reel-fed placement. | Choose TSB42AA9IPZT for sample evaluation or low-volume prototyping; TSB42AA9APZTR for volume production with pick-and-place integration. |
| TSB42AA9APZT | Identical silicon, same TQFP-100 package, RoHS-compliant CuNiPdAu finish - differs only in part marking and shipping unit quantity (90 pcs/tube vs. 100 pcs/tube). | No impact on circuit design or thermal performance; compatible with same footprint and reflow profile. | Select TSB42AA9IPZT when traceability or specific logistics requirements mandate the 'I' suffix variant per TI's orderable device matrix. |
Compared with TSB42AA9APZTR and TSB42AA9APZT, the TSB42AA9IPZT offers identical core functionality and timing behavior but is designated for individual tube packaging and engineering sample distribution - making it optimal for lab validation and schematic-level design verification prior to volume rollout.
Availability
TSB42AA9IPZT is available at Aetrix Electronics and suitable for external storage enclosures, optical drive adapters, industrial archiving systems, and medical imaging data recorders requiring stable component supply and long-term FireWire interface support.
Supply support for TSB42AA9IPZT 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 headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The StorageLynx product line, including TSB42AA9IPZT, was specifically engineered to enable cost-effective, standards-compliant FireWire-to-ATA/ATAPI bridging for high-volume PC peripheral storage applications - emphasizing hardware offload, minimal host dependency, and rapid time-to-market.
FAQ
What is the primary function of the TSB42AA9IPZT in a FireWire storage system?
The TSB42AA9IPZT serves as a native IEEE 1394 link-layer controller that functions as an SBP-2 target device, translating FireWire packet traffic into ATA/ATAPI commands for connected storage media. It executes SBP-2 management and command agents in hardware, enabling zero-host-CPU involvement in DMA setup and data movement - a core capability confirmed in TI's SLLA219 datasheet for TSB42AA9IPZT.
Does the TSB42AA9IPZT require external firmware loading to operate?
No, the TSB42AA9IPZT contains 16K internal ROM storing boot firmware and essential SBP-2 protocol logic, allowing immediate operation upon power-up. External flash is optional and used only for custom firmware extensions or in-system updates - not required for baseline SBP-2 target functionality as documented in the TSB42AA9IPZT datasheet.
What ATA/ATAPI transfer modes does the TSB42AA9IPZT support?
The TSB42AA9IPZT supports programmed I/O (PIO) modes 0–4, direct memory access (DMA) modes 0–2, and Ultra DMA modes 0–4 - fully covering legacy IDE and high-speed storage interfaces. These capabilities are explicitly verified in the TSB42AA9IPZT functional description and timing diagrams within TI's official documentation.
Is the TSB42AA9IPZT pin-compatible with other members of the TSB42AA9A family?
Yes, the TSB42AA9IPZT shares identical pinout, electrical characteristics, and package dimensions (TQFP-100, PZT drawing) with TSB42AA9APZT and TSB42AA9APZTR. TI's packaging addendum confirms all variants use the same mechanical outline and pad layout - enabling drop-in substitution across the family without PCB modification.
What is the role of the 2-wire serial interface (SCL/SDA) on the TSB42AA9IPZT?
The SCL/SDA pins implement a 2-wire interface to load IEEE 1394 configuration ROM data from an external serial EEPROM into the TSB42AA9IPZT's internal parameter RAM. This enables fast, automatic responses to host configuration read requests during enumeration - a mandatory requirement for SBP-2 compliance confirmed in TI's SLLA219 specification for TSB42AA9IPZT.
TSB42AA9IPZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-TQFP
- Programmable:
- Not Verified
- Protocol:
- IEEE 1394
- Function:
- Link Layer Controller
- Interface:
- Parallel
- Standards:
- IEEE 1394-1995, 1394a-2000
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 100-TQFP (14x14)
- Grade:
- -
- Qualification:
- -
TSB42AA9IPZT FAQ
1.How can I place an order for TSB42AA9IPZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB42AA9IPZT 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 TSB42AA9IPZT reliable?
The price and inventory of TSB42AA9IPZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB42AA9IPZT is usually 5 days.
3.What payment methods are accepted for TSB42AA9IPZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB42AA9IPZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB42AA9IPZT?
TSB42AA9IPZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB42AA9IPZT 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 TSB42AA9IPZT?
For technical support, including TSB42AA9IPZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB42AA9IPZT requirements.
6.How does Aetrix verify that TSB42AA9IPZT is sourced from the original manufacturer or authorized distributors?
All TSB42AA9IPZT 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 TSB42AA9IPZT meets industry standards.
7.What is the process for return or replacement of TSB42AA9IPZT?
All TSB42AA9IPZT units undergo pre-shipment inspection (PSI). If there is an issue with TSB42AA9IPZT, 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 TSB42AA9IPZT part is unused and in its original packaging.
Return procedure for TSB42AA9IPZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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