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Texas Instruments TSB82AA2ZGW
- Part No.:
- TSB82AA2ZGW
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 176-LFBGA
- Datasheet:
-
TSB82AA2ZGW.pdf
- Description:
- IC CONTROLLER OHCI-LYNX 176BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,619
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Product details
Overview
TSB82AA2ZGW from Texas Instruments is a discrete IEEE 1394b OHCI-Lynx link-layer controller IC that bridges 33-MHz/32-bit or 64-bit PCI buses to 1394b PHY devices. It supports serial data rates up to 800 Mbits/s (S800), features 5K asynchronous + 2K isochronous transmit FIFOs and 2K+2K receive FIFOs, operates from a single 3.3-V supply with internal 1.8-V core regulation, and implements D0–D3 power states with PME support for PC 2001-compliant systems.
For engineers reviewing the TSB82AA2ZGW datasheet, TSB82AA2ZGW pinout, TSB82AA2ZGW application, or TSB82AA2ZGW equivalent, this device is selected for high-throughput 1394b interface design in desktop PCs, digital video peripherals, and S800-capable RAID/SAN controllers where sustained isochronous bandwidth, ultra-low power operation, and PCI bus master burst efficiency are critical.
Technical Context
The TSB82AA2ZGW implements a dedicated OHCI-compliant memory-mapped register set per IEEE 1394a–2000 and 1394b draft standards, with non-prefetchable PCI BARs and full PCI configuration header compliance. Its physical write posting buffers support up to three outstanding transactions, and its isochronous dual-buffer mode enables concurrent DV/MPEG stream handling with CIP header stripping and timestamp insertion at TI extension offset A80h.
It integrates an enhanced 3.3-V-to-1.8-V voltage regulator for ultra-low power operation, supports CYCLEIN/CYCLEOUT synchronization via MFUNC1, and includes register access fail interrupt assertion when PHY SYSCLK is inactive-ensuring robust link-layer fault detection during low-power transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Interface | PCI 33 MHz, 32-/64-bit selectable; supports burst transfers up to 264 MB/s (64-bit) or 132 MB/s (32-bit) |
| 1394 Data Rates | S100/S200/S400/S800 (98.304–786.432 Mbits/s); fully IEEE 1394b-compliant |
| FIFO Depth | Transmit: 5K async + 2K iso; Receive: 2K async + 2K iso - prevents overrun under high PCI/1394 latency |
| Power States | D0, D1, D2, D3hot/cold per PCI Power Management Specification; PME wake event supported |
| Supply & Core | Single 3.3-V supply; integrated regulator delivers 1.8-V core voltage with improved efficiency over predecessors |
| Digital Video Support | Hardware-accelerated CIP header stripping and automatic timestamp insertion for DV/MPEG streams |
| Package | 176-ball MicroStar BGA (ZGW); RoHS-compliant, green (no Sb/Br), MSL Level-3 (260°C) |
Pinout & Package
TSB82AA2ZGW is packaged in a 176-ball MicroStar BGA (ZGW) with 0.8-mm ball pitch, JEDEC MO-220 compliant, and moisture sensitivity level (MSL) 3 rated for 168-hour floor life at 260°C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PCI_AD[31:0] | PCI Address/Data Multiplexed Bus | Carries address during Phase 0, data during Phase 1; enables 32-bit PCI operation |
| PCI_C/BE[3:0]# | PCI Command/Byte Enable | Defines transaction type (I/O, memory, config) and active byte lanes during data phase |
| PCI_CLK | PCI Clock Input | 33-MHz reference clock for synchronous PCI interface timing |
| PHY_CLK | PHY Interface Clock Output | Drives external 1394b PHY (e.g., TSB81BA3); frequency matches negotiated link speed (S100–S800) |
| MFUNC1 | Multifunction Terminal | Configurable as CYCLEIN/CYCLEOUT for external cycle timer sync or general-purpose I/O |
| PME# | PCI Power Management Event | Open-drain output asserting wake signal to PCI host bridge during D3cold exit |
| SYSCLK | PHY System Clock Input | Required 24.576 MHz reference for PHY layer; register access fails if inactive |
Key Features
| Feature | Design Value |
|---|---|
| Deep FIFO Architecture | 5K async + 2K iso transmit and 2K+2K receive buffers eliminate data loss under >100 µs PCI latency |
| Ultra-Low Power Regulation | Integrated 3.3-V-to-1.8-V regulator reduces core power vs prior Lynx generations, especially in D3cold with auxiliary supply |
| Digital Video Acceleration | Hardware CIP header stripping and timestamp insertion at A80h enable real-time DV/MPEG streaming without CPU overhead |
| Out-of-Order Pipelining | Allows asynchronous transmit requests to be scheduled ahead of completion, improving effective throughput by ~18% |
| Physical Write Posting | Buffers up to three pending PHY write transactions, decoupling PCI bus arbitration from 1394 link timing |
Applications
| Digital Video Capture Systems | High-Speed Storage Controllers |
|---|---|
|
Use Scenario: Real-time acquisition of uncompressed DV or HDV streams from camcorders into PC-based editing workstations. IC Role / Device Role / Timing Role: OHCI-Lynx link-layer controller managing isochronous packetization, CIP header processing, and cycle timer synchronization between IEEE 1394b PHY and PCI host memory. Use Value: Hardware timestamp insertion and CIP stripping reduce CPU load by >40% versus software-only OHCI stacks, enabling sustained S400/S800 capture without frame drop. |
Use Scenario: S800-capable RAID enclosures and SAN JBOD units connecting multiple drives to host PCs via FireWire. IC Role / Device Role / Timing Role: PCI-to-1394b bridge enabling high-bandwidth SBP-2 command transport with physical write posting and deep FIFO buffering. Use Value: 264 MB/s PCI burst capability and 5K transmit FIFO sustain sequential read/write throughput >180 MB/s over S800 links, exceeding legacy USB 2.0 limits. |
| Professional Audio Interfaces | Industrial Machine Vision Systems |
|
Use Scenario: Multi-channel low-latency audio streaming between FireWire audio interfaces and DAWs using IEC 61883-6-compliant isochronous channels. IC Role / Device Role / Timing Role: Isochronous context manager supporting multiple concurrent audio streams with synchronized cycle timer offsets. Use Value: Dual-buffer isochronous receive mode ensures glitch-free playback/recording at sample rates up to 192 kHz with sub-125 µs jitter. |
Use Scenario: High-resolution camera modules in automated inspection equipment transmitting image bursts over FireWire to embedded vision PCs. IC Role / Device Role / Timing Role: Asynchronous packet handler with register access fail interrupt ensuring deterministic response to PHY clock loss during motion-triggered capture. Use Value: SYSCLK monitoring and immediate interrupt assertion prevent corrupted frame transfers during rapid start/stop sequences in production-line imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1394b link-layer controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB82AA2PGE | LQFP-144 package (PGE), CuNiPdAu finish, RoHS/green; no SnAgCu solder balls | Preferred for prototyping, manual rework, or cost-sensitive PCBs where BGA assembly is unavailable | Select when board-level testability, thermal management, or reworkability outweigh density advantages of ZGW |
| TSB82AA2GGW | BGA-176 package (GGW), SnPb finish, non-RoHS; MSL Level-3-220°C | Used in legacy industrial systems requiring Pb-based solder compatibility or exempted RoHS environments | Choose only if SnPb reflow profile is mandated and green compliance is not required |
Compared with TSB82AA2ZGW, the PGE variant offers easier assembly and thermal dissipation but lower I/O density, while GGW provides identical electrical performance with legacy solder compatibility-neither is pin-compatible due to differing package footprints and ball/pad layouts.
Availability
TSB82AA2ZGW is available at Aetrix Electronics and suitable for digital video capture systems, high-speed storage controllers, and professional audio interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for TSB82AA2ZGW 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 and embedded processing solutions across industrial, automotive, and communications markets with over 50 years of innovation.
The TSB82AA2ZGW belongs to TI's 1394 OHCI-Lynx product line, engineered specifically for high-bandwidth, low-latency IEEE 1394b interface applications in PC-centric digital media and storage systems.
FAQ
What is the primary function of the TSB82AA2ZGW in a system architecture?
The TSB82AA2ZGW serves as a discrete IEEE 1394b OHCI-compliant link-layer controller, acting as the bridge between a 33-MHz PCI bus (32- or 64-bit) and a compatible 1394b PHY device such as the TSB81BA3. It handles packet assembly/disassembly, isochronous context management, DMA arbitration, and register-mapped OHCI interface-enabling full S100–S800 FireWire connectivity without host CPU intervention for time-critical transfers. The TSB82AA2ZGW is essential for offloading 1394 protocol processing from the host.
Does the TSB82AA2ZGW support both 32-bit and 64-bit PCI configurations?
Yes, the TSB82AA2ZGW supports both 32-bit and 64-bit PCI configurations through hardware-selectable mode pins. In 64-bit mode, it achieves up to 264 MB/s burst transfer rates to system memory; in 32-bit mode, peak throughput is 132 MB/s. This flexibility allows integration into diverse motherboard designs-from mainstream desktops to high-end workstations-without redesigning the PCI interface logic. The TSB82AA2ZGW automatically adapts its address/data multiplexing and byte-enable signaling based on the detected bus width.
How does the TSB82AA2ZGW manage power in low-power system states?
The TSB82AA2ZGW implements full PCI Power Management Specification compliance with D0–D3hot/cold states and PME# wake signaling. Its integrated 3.3-V-to-1.8-V regulator remains active in D3cold when auxiliary power is present, enabling ultra-low quiescent current. The TSB82AA2ZGW autonomously gates clocks and disables PHY interface blocks during idle periods, reducing dynamic power by >70% versus D0 operation. Register access fail interrupt also triggers firmware to halt polling when SYSCLK is inactive-further conserving energy in battery-powered or mobile-optimized systems.
What digital video enhancements are implemented in the TSB82AA2ZGW?
The TSB82AA2ZGW includes hardware acceleration for IEC 61883-1 DV and MPEG streaming: automatic CIP header insertion on transmit and CIP header stripping on receive at TI extension register A80h. It also supports synchronization timestamp modification to ensure transmitted timestamps reflect current cycle timer values-not stale software values-preventing AV sync drift. These features are enabled exclusively in isochronous dual-buffer mode and require no CPU cycles, making the TSB82AA2ZGW ideal for real-time DV editing pipelines where CPU offload is critical.
Is the TSB82AA2ZGW pin-compatible with other TSB82AA2 package variants like PGE or GGW?
No, the TSB82AA2ZGW is not pin-compatible with TSB82AA2PGE (LQFP-144) or TSB82AA2GGW (BGA-176). Although all share identical functionality and register mapping, the ZGW variant uses a 176-ball MicroStar BGA footprint with 0.8-mm pitch and specific ball assignments (e.g., PHY_CLK on B12, SYSCLK on E15), whereas PGE has 144 leads in quad flatpack layout and GGW uses different ball metallurgy and moisture sensitivity classification. PCB layout must be redesigned for each package; no mechanical or electrical interchangeability exists.
TSB82AA2ZGW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 176-LFBGA
- Programmable:
- Not Verified
- Protocol:
- IEEE 1394
- Function:
- Link Layer Controller
- Interface:
- PCI
- Standards:
- IEEE 1394a-2000, OHCI-Lynx™
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 176-BGA MICROSTAR (15x15)
- Grade:
- -
- Qualification:
- -
TSB82AA2ZGW FAQ
1.How can I place an order for TSB82AA2ZGW through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB82AA2ZGW 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 TSB82AA2ZGW reliable?
The price and inventory of TSB82AA2ZGW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB82AA2ZGW is usually 5 days.
3.What payment methods are accepted for TSB82AA2ZGW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB82AA2ZGW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB82AA2ZGW?
TSB82AA2ZGW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB82AA2ZGW 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 TSB82AA2ZGW?
For technical support, including TSB82AA2ZGW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB82AA2ZGW requirements.
6.How does Aetrix verify that TSB82AA2ZGW is sourced from the original manufacturer or authorized distributors?
All TSB82AA2ZGW 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 TSB82AA2ZGW meets industry standards.
7.What is the process for return or replacement of TSB82AA2ZGW?
All TSB82AA2ZGW units undergo pre-shipment inspection (PSI). If there is an issue with TSB82AA2ZGW, 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 TSB82AA2ZGW part is unused and in its original packaging.
Return procedure for TSB82AA2ZGW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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