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Texas Instruments PCI4451GFN
- Part No.:
- PCI4451GFN
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 256-BGA
- Datasheet:
-
PCI4451GFN.pdf
- Description:
- IC INTEGRATED PC CARD 256-BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,355
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Product details
Overview
PCI4451GFN from Texas Instruments is a dual-socket PC Card and IEEE 1394 Open Host Controller Interface (OHCI) controller IC compliant with PCI Local Bus Specification 2.2, supporting both 16-bit PC Card and CardBus sockets with hot insertion/removal, 3.3-V core logic, and integrated zoomed video (ZV) path for notebook docking and expansion applications.
For engineers reviewing the PCI4451GFN datasheet, PCI4451GFN pinout, PCI4451GFN application, or PCI4451GFN equivalent, key selection considerations include its dual-function PCI device architecture (Functions 0/1 = PC Card controllers, Function 2 = OHCI link), 256-ball BGA package, ExCA™ register compatibility, 132 MB/s burst throughput, and ACPI 1.0/PC 98–99 compliance.
Technical Context
The PCI4451GFN implements three independent PCI functions on a single die: Functions 0 and 1 are fully independent PC Card socket controllers compliant with the 1997 PC Card Standard, each supporting five memory and two I/O windows, distributed DMA, and Intel 82365SL-DF register compatibility. It supports mixed 5-V/3.3-V PC Card16 and 3.3-V CardBus cards with internal buffering enabling hot insertion without external components.
Function 2 provides IEEE 1394a-compliant OHCI link functionality at 100/200/400 Mbit/s data rates, featuring deep FIFOs, physical write posting, SBP-2-optimized data path, and bus-hold buffers on the PHY/Link interface. The device integrates an internal ring oscillator, programmable multifunction terminals (8 total), and dedicated PCI CLKRUN terminal for power management coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCI Compliance | PCI Local Bus Spec 2.2; supports burst transfers, LOCK, posted writes up to 3 outstanding transactions |
| PC Card Support | Dual socket: 16-bit PC Card and CardBus; mix-and-match 5-V/3.3-V cards with hot insertion/removal |
| IEEE 1394 Interface | OHCI-compliant link function per IEEE 1394-1995 & 1394a; 100/200/400 Mbit/s serial bus data rates |
| Zoomed Video Path | Internally buffered ZV path compliant with CardBus loading specs; enables ZV auto-detect and ultra zoomed video support |
| Power Management | PCI Bus Power Management Spec 1.1 compliant; supports D3 status terminal, ACPI 1.0, OnNow-ready device class |
| Package | 256-terminal Plastic Ball Grid Array (PBGA), GFN package drawing, 24.13 mm × 24.13 mm footprint |
| Logic Voltage | 3.3-V core logic with universal PCI interfaces compatible with both 3.3-V and 5-V PCI signaling environments |
Pinout & Package
PCI4451GFN is housed in a 256-ball plastic BGA (PBGA) package per mechanical drawing GFN (S-PBGA-N256), with 1.27 mm ball pitch, 24.13 mm × 24.13 mm body size, and JEDEC MO-151 compliance. Pinout is defined by ball grid mapping; no discrete pin numbering applies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKRUN# | PCI Clock Run Control | Dedicated active-low signal for dynamic clock gating to reduce system power during idle periods |
| LED[1:0] | Card Activity Indicator Outputs | Open-drain outputs driving LEDs to show activity per socket; configurable via register control |
| MF[7:0] | Multifunction Terminals | 8 programmable I/Os supporting PC/PCI DMA, parallel interrupts, SUSPEND, ring indicate, and ACPI event generation |
| ZV_CLK, ZV_DATA[7:0] | Zoomed Video Interface | Dedicated ZV bus signals with internal buffering; eliminates need for external isolation capacitors |
| PHY_CLK, PHY_DATA[7:0] | IEEE 1394 PHY/Link Interface | Bus-hold buffers on all PHY/Link lines enable low-cost single-capacitor isolation per IEEE 1394 spec |
Key Features
| Feature | Design Value |
|---|---|
| Independent Socket Controllers | Functions 0 and 1 provide fully isolated configuration spaces and resource allocation per socket-enables concurrent operation of dissimilar card types |
| ExCA™ Register Compatibility | Hardware-level register mapping matches Intel 82365SL-DF, allowing reuse of existing ExCA-based driver stacks without modification |
| Deep FIFO Architecture | Separate deep FIFOs for PCI-to-CardBus and PCI-to-1394 paths tolerate >10 µs host latency while sustaining 132 MB/s burst throughput |
| Advanced Card Detect Filtering | 90 µs noise immunity on card detect lines prevents false hot-insertion events in electrically noisy laptop chassis environments |
| ACPI-Compliant Multifunction I/O | All 8 MF terminals support programmable edge-triggered general-purpose events with ACPI-compliant interrupt routing and power-state awareness |
Applications
| Notebook Expansion Docking Station | Mobile Workstation PCMCIA Hub |
|---|---|
Use Scenario: A portable docking station providing simultaneous CardBus and IEEE 1394 connectivity for professional users requiring high-speed peripherals and legacy PC Cards. IC Role / Device Role / Timing Role: PCI4451GFN serves as the central bridge between the host PCI bus and dual CardBus sockets plus IEEE 1394 PHY, managing arbitration, DMA, and power state transitions. Use Value: Enables single-chip integration of PC Card and FireWire host controller functions-reducing BOM count, PCB area, and thermal load versus discrete solutions. | Use Scenario: A ruggedized mobile workstation add-in card supporting legacy 16-bit modems, SCSI adapters, and FireWire storage in field-deployed engineering equipment. IC Role / Device Role / Timing Role: PCI4451GFN acts as a dual-role controller: PC Card socket manager with ExCA register compatibility and OHCI link layer for SBP-2 storage protocol acceleration. Use Value: Delivers sustained 132 MB/s burst transfers and deep FIFO buffering-critical for real-time data acquisition from FireWire cameras and SCSI tape drives. |
| Industrial Thin Client Terminal | Legacy Medical Imaging Interface |
Use Scenario: A fanless thin client with hot-swappable PC Card slots for secure authentication tokens and wireless WAN modules, plus FireWire for diagnostic peripherals. IC Role / Device Role / Timing Role: PCI4451GFN manages power sequencing across sockets and OHCI link using ACPI 1.0-compliant suspend/resume states and programmable D3 status terminal. Use Value: Internal ring oscillator and advanced submicron CMOS process achieve <1.2 W typical active power-essential for passive-cooled embedded designs. | Use Scenario: Retrofit interface module connecting legacy ultrasound imaging probes (via PC Card) and digital video recorders (via IEEE 1394) to modern PCI-based imaging workstations. IC Role / Device Role / Timing Role: PCI4451GFN provides zoomed video path buffering and timing alignment between analog video capture and FireWire streaming domains. Use Value: Integrated ZV path meets CardBus loading specifications without external components-ensuring signal integrity for medical-grade video fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PC Card and IEEE 1394 host controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2046B | USB 2.0 hub controller only; no PC Card or IEEE 1394 functionality; 28-pin QFN package | Supports USB peripheral expansion only-not suitable for PC Card or FireWire legacy interface replacement | Select only when replacing USB-only expansion needs; cannot substitute for PCI4451GFN's dual-protocol capability |
| PCI4510GJG | Successor device with enhanced 1394b support (800 Mbit/s), same 257-ball MicroStar BGA package, but not pin-compatible with PCI4451GFN | Enables higher-bandwidth FireWire storage and video streaming; requires PCB redesign due to different ball map and power sequencing | Consider for new designs requiring 1394b; not a drop-in replacement-requires full hardware and driver validation |
Compared with TUSB2046B and PCI4510GJG, the PCI4451GFN uniquely combines PC Card socket control, OHCI 1394a link, and zoomed video path in one 256-ball BGA-making it irreplaceable in legacy docking systems where dual-protocol bridging and ZV compliance are mandatory.
Availability
PCI4451GFN is available at Aetrix Electronics and suitable for notebook docking stations, mobile workstation PCMCIA hubs, industrial thin client terminals, and legacy medical imaging interfaces requiring stable component supply for long-lifecycle maintenance and repair programs.
Supply support for PCI4451GFN 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 silicon design leadership.
The PCI4451GFN belongs to TI's legacy PC interface controller product line, designed specifically for high-volume notebook and docking station platforms requiring integrated PC Card and IEEE 1394 host controller functionality with minimal external components.
FAQ
Is PCI4451GFN still in production?
No, the PCI4451GFN is marked OBSOLETE by Texas Instruments per official packaging documentation. It is no longer manufactured, but Aetrix Electronics maintains limited legacy inventory for repair and maintenance of deployed systems. Customers should plan for long-term obsolescence mitigation strategies when designing with PCI4451GFN.
What does "Not Recommended for New Designs" mean for PCI4451GFN?
"Not Recommended for New Designs" indicates TI discontinued active design-in support for PCI4451GFN after June 2006. While functional and documented, TI advises against using PCI4451GFN in newly initiated projects due to lack of future supply assurance, updated drivers, or technical support-PCI4510GJG is its designated successor.
Does PCI4451GFN support CardBus 32-bit mode?
Yes, PCI4451GFN supports 32-bit CardBus operation through its PCI-to-CardBus bridge architecture. Its internal data path logic allows the host to access 8-, 16-, and 32-bit cards using full 32-bit PCI cycles, enabling maximum performance for high-bandwidth CardBus peripherals like Gigabit Ethernet and FireWire adapters.
Can PCI4451GFN replace Intel 82365SL-DF in existing designs?
Yes, PCI4451GFN is explicitly register-compatible with Intel 82365SL-DF per TI's SLLA236 datasheet. This allows direct software driver reuse in legacy ExCA-based systems, though hardware changes may be needed for power delivery, clocking, and BGA layout due to differing package size and pinout.
What is the role of the ZV path in PCI4451GFN?
The zoomed video (ZV) path in PCI4451GFN provides a dedicated, internally buffered interface between CardBus and host graphics controllers. It ensures compliance with CardBus loading specifications, enables ZV auto-detect, and eliminates external isolation components-critical for reliable video capture and playback in docking station applications using PCI4451GFN.
PCI4451GFN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 256-BGA
- Programmable:
- Not Verified
- Protocol:
- PCI CardBus
- Function:
- Controller
- Interface:
- PCI
- Standards:
- -
- Voltage - Supply:
- 3.3V, 5V
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 256-BGA (27x27)
- Grade:
- -
- Qualification:
- -
PCI4451GFN FAQ
1.How can I place an order for PCI4451GFN through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI4451GFN 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 PCI4451GFN reliable?
The price and inventory of PCI4451GFN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI4451GFN is usually 5 days.
3.What payment methods are accepted for PCI4451GFN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI4451GFN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI4451GFN?
PCI4451GFN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI4451GFN 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 PCI4451GFN?
For technical support, including PCI4451GFN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI4451GFN requirements.
6.How does Aetrix verify that PCI4451GFN is sourced from the original manufacturer or authorized distributors?
All PCI4451GFN 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 PCI4451GFN meets industry standards.
7.What is the process for return or replacement of PCI4451GFN?
All PCI4451GFN units undergo pre-shipment inspection (PSI). If there is an issue with PCI4451GFN, 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 PCI4451GFN part is unused and in its original packaging.
Return procedure for PCI4451GFN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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