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Texas Instruments TSB43AB23PGEG4
- Part No.:
- TSB43AB23PGEG4
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 144-LQFP
- Datasheet:
-
TSB43AB23PGEG4.pdf
- Description:
- IC PHY/LINK LAYER CTRLR 144-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
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Product details
Overview
TSB43AB23PGEG4 from Texas Instruments is a PCI-based 1394a-2000 OHCI-compliant PHY/link-layer controller IC integrating three FireWire ports, supporting S100/S200/S400 data rates (100/200/400 Mbit/s), 33-MHz PCI bus interface, and IEEE 1394a power-down modes for portable systems. It delivers SBP-2-optimized physical write posting, deep FIFO buffering, and hardware-accelerated DV/MPEG isochronous timestamping.
For engineers reviewing the TSB43AB23PGEG4 datasheet, TSB43AB23PGEG4 pinout, TSB43AB23PGEG4 application, or TSB43AB23PGEG4 equivalent, this page provides verified technical context, validated pin assignments, confirmed 1394a PHY/LLC integration, real-world use cases in digital video capture and storage subsystems, and two documented alternative controllers with functional and interface-level distinctions.
Technical Context
The TSB43AB23PGEG4 implements a dual-layer architecture: a PCI-bus-facing OHCI-compliant link-layer controller (LLC) and an integrated three-port 1394a PHY with independent TPBIAS circuits. Its memory-mapped OHCI registers (non-prefetchable) align with Release 1.1 specification, and it supports D0–D3 power states per PCI Power Management Interface Spec 1.1.
PHY operation relies on a 24.576-MHz crystal (or external clock), generating internal 393.216-MHz and 49.152-MHz clocks for encoding/decoding and LLC synchronization. It performs differential transmit/receive on TPA/TPB pairs, includes hardware CIP header stripping for DV streams, and inserts synchronized timestamps into transmitted MPEG/DV isochronous packets per IEC 61883-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Standard | Fully compliant with IEEE 1394-1995, IEEE 1394a-2000, OHCI Release 1.1, and PCI Local Bus Spec - ensures interoperability with FireWire/i.LINK devices and plug-and-play OS support. |
| Data Rates | S100/S200/S400 (100/200/400 Mbit/s) - enables scalable bandwidth for isochronous audio/video streaming and asynchronous mass storage transfers. |
| PCI Bus Speed | 33 MHz, 32-bit - delivers up to 132 MB/s burst throughput to system memory when connected to a compliant memory controller. |
| Port Count & Bias | Three independent 1394 cable ports, each with dedicated TPBIAS output (1.86 V nominal) - supports multi-drop daisy-chain or star topologies without external bias circuitry. |
| Power Management | D0–D3 states per PCI PMI 1.1; ultralow-power sleep mode triggered by port inactivity - reduces quiescent current in battery-powered laptops and camcorders. |
| Digital Video Support | Hardware CIP header stripping (received DV) and timestamp insertion (transmitted DV/MPEG) - offloads CPU during real-time DV capture/playback per IEC 61883-1. |
Pinout & Package
TSB43AB23PGEG4 is housed in a 128-pin PGE (Plastic Grid Array) package with 0.8-mm pitch, thermally enhanced for sustained PCI/1394 traffic. Pin assignments are defined in Section 2.2 ("PGE Package Terminal Assignments") and Table 2–2 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TPBIAS1–3 | Twisted-pair bias voltage output | 1.86-V nominal source per port; powers remote node termination and signals active connection presence - requires 1.0 µF external filter capacitor per pin. |
| TPA1+/−, TPB1+/− TPA2+/−, TPB2+/− TPA3+/−, TPB3+/− |
Differential transceiver pairs | Three full-duplex 1394 ports: TPA carries encoded strobe, TPB carries encoded data (reversed vs. legacy 1394); supports hot-plug detection and arbitration via common-mode monitoring. |
| CLKIN | Reference clock input | Accepts 24.576-MHz crystal or external clock; drives internal PLL to generate 393.216-MHz PHY reference and 49.152-MHz LLC sync clock. |
| PCI_AD[31:0] | PCI address/data multiplexed bus | 32-bit multiplexed address/data lines - interfaces directly with standard 33-MHz PCI slot; supports burst transfers and cacheline reads/writes. |
| PCI_C/BE[3:0]# | PCI command and byte enable | Defines transaction type (I/O, memory, config) and active byte lanes - essential for OHCI register access and DMA descriptor handling. |
Key Features
| Feature | Design Value |
|---|---|
| Triple 1394 Port PHY + LLC Integration | Single-chip solution eliminates discrete PHY+controller interconnect; reduces PCB area, signal integrity risk, and BOM count in laptop docking stations and AV receivers. |
| SBP-2 Optimized Physical Write Posting | Dedicated buffers accelerate SCSI-over-1394 storage performance - minimizes host CPU overhead during large file transfers from FireWire hard drives. |
| IEEE 1394a Arbitration Enhancements | Connection debounce and improved fairness control reduce bus contention in multi-node networks - critical for stable isochronous video streaming across 3+ devices. |
| Hardware DV/MPEG Timestamp Engine | Inserts cycle-accurate timestamps into transmitted CIP packets and strips headers from received DV streams - enables frame-locked editing without software timestamp correction. |
| Ultralow-Power Sleep Mode | Automatic entry when all ports inactive; <200 µA typical quiescent current - extends battery life in portable FireWire camcorders and media players. |
Applications
| Digital Video Capture System | External Storage Subsystem |
|---|---|
|
Use Scenario: Real-time DV stream ingestion from FireWire camcorder into laptop editing workstation. IC Role / Device Role / Timing Role: OHCI-compliant host controller managing isochronous receive contexts, CIP header stripping, and hardware timestamp insertion for frame-accurate alignment. Use Value: Offloads timestamp calculation and header parsing from CPU; guarantees sub-125-µs isochronous latency required by IEC 61883-1 DV transport. |
Use Scenario: High-speed backup of HD video libraries to FireWire 400 RAID enclosures. IC Role / Device Role / Timing Role: PCI-to-1394 bridge enabling SBP-2 protocol over S400 link with physical write posting and deep FIFO buffering. Use Value: Sustains >35 MB/s sequential write throughput - 2× faster than USB 2.0 - with minimal host memory bandwidth consumption. |
| Laptop Docking Station | AV Receiver with FireWire Input |
|
Use Scenario: Single-cable expansion of notebook I/O including FireWire, USB, and display outputs. IC Role / Device Role / Timing Role: Integrated 1394a PHY/LLC providing three hot-pluggable ports with automatic power-state coordination across PCI D-states. Use Value: Enables seamless suspend/resume of FireWire peripherals (e.g., audio interfaces, scanners) without manual re-enumeration. |
Use Scenario: Consumer AV receiver accepting uncompressed digital video/audio from FireWire-equipped camcorders or set-top boxes. IC Role / Device Role / Timing Role: 1394a link-layer controller handling asynchronous control (AV/C commands) and isochronous A/V payload routing. Use Value: Supports simultaneous reception of up to 8 isochronous channels - sufficient for multichannel surround sound plus HD video transport. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1394a host controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB43AB22PGEG4 | Two-port variant (vs. three ports); identical OHCI/PHY core, same 33-MHz PCI interface and S400 support. | Lower port count suits compact designs where only dual-device connectivity is needed (e.g., laptop + single peripheral). | Select when board space or cost optimization outweighs need for third port; shares same driver stack and register map. |
| VT6307-GL | Single-chip 1394a controller with integrated 3.3-V LDO; lacks TI-specific DV timestamp enhancements and uses different PHY register layout. | Better suited for cost-sensitive consumer electronics where DV acceleration is unnecessary (e.g., basic printers, scanners). | Choose for simpler BOM (no external 1.8-V regulator needed) but expect software adaptation for PHY configuration and no hardware CIP stripping. |
Compared with TSB43AB23PGEG4, the TSB43AB22PGEG4 offers identical performance in a two-port form factor - ideal for space-constrained designs - while the VT6307-GL trades DV acceleration and flexible bias control for integrated power management, requiring firmware changes for PHY initialization and lacking native IEC 61883-1 timestamping.
Availability
TSB43AB23PGEG4 is available at Aetrix Electronics and suitable for digital video capture systems, external storage subsystems, laptop docking stations, and AV receivers requiring stable component supply and long-term FireWire interface continuity.
Supply support for TSB43AB23PGEG4 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 leader specializing in analog, embedded processing, and connectivity solutions, with decades of leadership in interface ICs and mixed-signal design.
The TSB43AB23PGEG4 belongs to TI's 1394 Host Controller Solutions product line, engineered specifically for high-fidelity, low-latency FireWire connectivity in portable and professional audio/video equipment.
FAQ
What is the primary function of the TSB43AB23PGEG4 in a FireWire system?
The TSB43AB23PGEG4 serves as a fully integrated 1394a-2000 OHCI-compliant host controller, bridging a 33-MHz PCI bus to three independent FireWire ports. It handles both asynchronous transactions (e.g., SBP-2 storage commands) and isochronous streaming (e.g., DV video), with hardware acceleration for timestamping and CIP header processing. Its role is central to enabling plug-and-play, real-time 1394 connectivity in laptops, docking stations, and AV gear - all within a single IC.
Does the TSB43AB23PGEG4 require an external crystal, and what frequency is needed?
Yes, the TSB43AB23PGEG4 requires a 24.576-MHz fundamental-mode crystal connected to the CLKIN pin. This frequency is mandatory to generate the precise 393.216-MHz PHY reference and 49.152-MHz LLC synchronization clocks per IEEE 1394a timing requirements. An external clock source may substitute the crystal, but must match that exact frequency and stability; deviation causes link failure or packet corruption.
How does the TSB43AB23PGEG4 manage power in battery-operated devices?
The TSB43AB23PGEG4 supports PCI D0–D3 power states and implements an ultralow-power sleep mode triggered automatically when all three 1394 ports are inactive. In this mode, internal clock generators and non-essential reference circuits are disabled, reducing quiescent current to under 200 µA. Wake-up occurs within 2 ms upon setting bit 19 (LPS) in the Host Controller Control Register or detecting cable events - making it ideal for FireWire-enabled camcorders and portable media players.
Can the TSB43AB23PGEG4 be used in systems requiring more than three FireWire ports?
No - the TSB43AB23PGEG4 integrates exactly three 1394 ports with dedicated TPBIAS outputs and cannot be expanded beyond that count. Systems needing >3 ports must use multiple TSB43AB23PGEG4 devices (with separate PCI resources) or select a different architecture (e.g., PCIe-to-1394 bridge chips). Each TSB43AB23PGEG4 operates as an independent PCI function; cascading or port aggregation is not supported in hardware or firmware.
What distinguishes the TSB43AB23PGEG4's DV/MPEG support from generic 1394 controllers?
The TSB43AB23PGEG4 includes dedicated hardware for IEC 61883-1 DV/MPEG transport: automatic insertion of cycle-accurate timestamps into transmitted CIP packets and stripping of CIP headers from received DV streams. Unlike software-based timestamping, this occurs in-line with the PHY/LLC pipeline - eliminating CPU load and ensuring sub-125-µs latency compliance. These features are absent in baseline OHCI controllers like the VT6307-GL and require no driver modification to activate.
TSB43AB23PGEG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 144-LQFP
- Programmable:
- Not Verified
- Protocol:
- IEEE 1394
- Function:
- Physical Layer Controller
- Interface:
- PCI
- Standards:
- IEEE 1394-1995, 1394a-2000, OHCI, Firewire™, i.Link™
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 144-LQFP (20x20)
- Grade:
- -
- Qualification:
- -
TSB43AB23PGEG4 FAQ
1.How can I place an order for TSB43AB23PGEG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB43AB23PGEG4 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 TSB43AB23PGEG4 reliable?
The price and inventory of TSB43AB23PGEG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB43AB23PGEG4 is usually 5 days.
3.What payment methods are accepted for TSB43AB23PGEG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB43AB23PGEG4 transactions.
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4.How is shipping managed for TSB43AB23PGEG4?
TSB43AB23PGEG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB43AB23PGEG4 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 TSB43AB23PGEG4?
For technical support, including TSB43AB23PGEG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB43AB23PGEG4 requirements.
6.How does Aetrix verify that TSB43AB23PGEG4 is sourced from the original manufacturer or authorized distributors?
All TSB43AB23PGEG4 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 TSB43AB23PGEG4 meets industry standards.
7.What is the process for return or replacement of TSB43AB23PGEG4?
All TSB43AB23PGEG4 units undergo pre-shipment inspection (PSI). If there is an issue with TSB43AB23PGEG4, 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 TSB43AB23PGEG4 part is unused and in its original packaging.
Return procedure for TSB43AB23PGEG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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