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Texas Instruments PCI4451GJG
- Part No.:
- PCI4451GJG
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 257-LFBGA
- Datasheet:
-
PCI4451GJG.pdf
- Description:
- IC INTEGRATED PC CARD 257-BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,716
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Product details
Overview
PCI4451GJG from Texas Instruments is a dual-socket PC Card and IEEE 1394 Open Host Controller Interface (OHCI) controller IC, implementing three PCI functions: two independent PC Card socket controllers (Functions 0 & 1) and one IEEE 1394 link function (Function 2). It supports 16-bit PC Card and CardBus sockets with hot insertion/removal, 3.3-V/5-V mixed-card operation, and 100/200/400 Mbit/s IEEE 1394 data rates - deployed in legacy notebook docking stations and multifunction expansion cards.
For engineers reviewing the PCI4451GJG datasheet, PCI4451GJG pinout, PCI4451GJG application, or PCI4451GJG equivalent, key selection considerations include PCI Local Bus Specification 2.2 compliance, ExCA™ register compatibility with Intel 82365SL-DF, OHCI 1394a support, zoomed video (ZV) path integration, and MicroStar BGA™ 257-ball packaging with JEDEC MO-151 alignment.
Technical Context
The PCI4451GJG implements a three-function PCI device architecture: Functions 0 and 1 are fully independent PC Card controllers compliant with the 1997 PC Card Standard and PCI-to-CardBus Bridge Specification, each supporting five memory windows and two I/O windows. It enables mix-and-match 5-V/3.3-V PC Card16 and 3.3-V CardBus cards with internal buffering for hot insertion and removal.
Function 2 provides IEEE 1394a-compliant OHCI link functionality with deep FIFOs, physical write posting, SBP-2-optimized data path, and bus-hold buffers on the PHY/Link interface. The device integrates an internally buffered zoomed video (ZV) path and eight programmable multifunction terminals for ACPI events, DMA control, LED signaling, and interrupt routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCI Compliance | PCI Local Bus Specification Revision 2.2; supports burst transfers, LOCK, posted writes, and 32-bit addressing. |
| PC Card Support | Two independent sockets; supports 16-bit PC Card and CardBus; 5-V/3.3-V mixed-voltage operation with internal buffering. |
| IEEE 1394 Interface | OHCI-compliant link function per IEEE 1394-1995 and 1394a; supports 100/200/400 Mbit/s data rates with SBP-2 optimization. |
| Zoomed Video Path | Integrated ZV path with internal buffering - eliminates external ZV logic and ensures CardBus loading compliance. |
| Power Management | PCI Bus Power Management Interface Spec 1.1 compliant; supports D0–D3 states and ACPI 1.0 general-purpose event programming. |
| Package | 257-terminal MicroStar BGA™ (GJG), JEDEC MO-151 footprint, 16.0 mm × 16.0 mm body, 0.8-mm ball pitch. |
| Process & Voltage | Advanced submicron CMOS; 3.3-V core logic with universal PCI I/O interfaces compatible with both 3.3-V and 5-V PCI signaling environments. |
Pinout & Package
PCI4451GJG is packaged in a 257-ball MicroStar BGA™ (GJG) package with JEDEC MO-151 mechanical standard, 16.0 mm × 16.0 mm body size, and 0.8-mm ball pitch. Ball map follows TI's standardized GJG drawing (S–PBGA–N257), with power, ground, PCI interface, CardBus signal groups, OHCI PHY/Link I/O, ZV path, and multifunction terminals distributed across the array.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK, RST#, FRAME#, AD[31:0], C/BE#[3:0] | PCI Bus Interface Signals | Standard PCI 32-bit address/data multiplexed bus with command/control; supports full 32-bit cycles and burst transfers. |
| CD1#, CD2#, VCC1, VCC2, VPP1, VPP2 | PC Card Socket Control & Power | Dedicated card-detect lines with 90 µs noise immunity; independent VCC/VPP rails per socket for mixed-voltage card support. |
| PHY_CLK, PHY_DATA[3:0], PHY_CTL[1:0] | IEEE 1394 PHY Interface | Low-voltage differential-capable interface to external 1394 PHY; includes bus-hold buffers for single-capacitor isolation. |
| ZV_CLK, ZV_DATA[7:0], ZV_SYNC | Zoomed Video Path Signals | Dedicated ZV bus signals routed internally - no external ZV logic required; meets CardBus timing and loading specs. |
| MF[7:0] | Multifunction Terminals | Programmable I/Os supporting ISA/PCI serial interrupts, PC/PCI DMA, LED activity indicators, and ACPI general-purpose events. |
Key Features
| Feature | Design Value |
|---|---|
| ExCA™ Register Compatibility | Fully register-compatible with Intel 82365SL-DF - enables drop-in software driver reuse in legacy PC Card systems. |
| Dual Independent Socket Control | Separate configuration space and resource mapping per socket - eliminates inter-socket resource contention in multi-card operation. |
| OHCI Link Function Integration | IEEE 1394a-compliant link layer with deep FIFOs and SBP-2 tuning - delivers sustained 1394 throughput under high host latency. |
| Hot Insertion/Removal Support | All card signals internally buffered - removes need for external hot-swap ASICs or discrete buffer arrays in docking station designs. |
| ACPI 1.0 General-Purpose Events | Eight MF terminals programmable as ACPI-compliant event sources - enables OS-level power state transitions without platform-specific firmware. |
Applications
| Notebook Docking Station | Legacy Multifunction Expansion Card |
|---|---|
Use Scenario: Adds PC Card and FireWire connectivity to thin-and-light notebooks via proprietary or ExpressCard-derivative slots. IC Role / Device Role / Timing Role: Dual-role bridge IC serving as both PC Card controller and IEEE 1394 OHCI host controller - synchronizes PCI bus timing with asynchronous CardBus and 1394 PHY clocks. Use Value: Single-chip consolidation reduces BOM count and PCB area versus discrete controller + OHCI solutions; ZV path enables direct video capture without external logic. |
Use Scenario: Enables legacy industrial PCs to add CardBus and FireWire ports using PCI add-in cards with minimal BIOS/firmware updates. IC Role / Device Role / Timing Role: PCI-to-CardBus/1394 bridge with independent socket arbitration - manages concurrent DMA from PC Card storage and 1394 audio/video streams. Use Value: ExCA™ register compatibility allows reuse of existing Windows 98/2000 drivers; PCI LOCK and posted write support improves bus utilization during burst transfers. |
| PCMCIA-Based Data Acquisition System | Zoomed Video Capture Adapter |
Use Scenario: Integrates 16-bit analog I/O and digital I/O PC Cards into real-time test equipment with synchronized timestamping via PCI bus. IC Role / Device Role / Timing Role: PC Card controller with distributed DMA and PCI-to-CardBus bridging - routes card-initiated interrupts through serial/parallel PCI modes to match host interrupt controller topology. Use Value: Supports ring-indicate and SUSPEND signals for remote wake-up; programmable D3 status terminal enables precise power-state reporting to OS power manager. |
Use Scenario: Captures VGA-resolution video directly from ZV-capable cameras or graphics outputs into notebook memory via CardBus interface. IC Role / Device Role / Timing Role: Integrated ZV path controller - handles ZV_CLK synchronization, palette memory decoding, and subtractive I/O decoding without external glue logic. Use Value: Auto-detect and advanced filtering on card detect lines prevent false ZV activation; internal ring oscillator eliminates need for external ZV clock source. |
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 |
|---|---|---|---|
| PCI4450GJG | Same die, identical pinout and register set; differs only in factory-programmed subsystem ID and vendor ID values. | No functional difference; used interchangeably in same hardware designs where subsystem identity is not enforced by OS/driver. | Select PCI4450GJG only if legacy system firmware or driver requires specific subsystem identifiers. |
| TUSB2046B | USB 2.0 hub controller (not PC Card or IEEE 1394); no ExCA™, ZV, or CardBus support; 28-pin QFN package. | Replaces legacy FireWire/PC Card functionality with USB-based peripherals - requires complete redesign of card interface and driver stack. | Consider only for new designs abandoning PCMCIA/1394 entirely; not a functional substitute for PCI4451GJG's dual-bridge role. |
Compared with PCI4451GJG, PCI4450GJG offers identical functionality and drop-in replacement capability, while TUSB2046B serves a fundamentally different interface domain and cannot replicate PC Card or OHCI 1394 functionality - making it unsuitable for continuity in legacy expansion architectures.
Availability
PCI4451GJG is available at Aetrix Electronics and suitable for legacy system repair, industrial PC maintenance, and obsolescence-mitigation programs requiring stable component supply for notebook docking stations, multifunction expansion cards, and PCMCIA-based data acquisition systems.
Supply support for PCI4451GJG 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 communications markets.
The PCI4451GJG belongs to TI's legacy PC interface product line, designed specifically for high-volume PC and notebook platforms requiring integrated PC Card and IEEE 1394 host controller functionality in a single BGA package.
FAQ
Is PCI4451GJG still in production?
No. According to Texas Instruments' official packaging information, PCI4451GJG is marked "OBSOLETE" - TI has discontinued its production. Aetrix Electronics supplies remaining authorized inventory and supports obsolescence management for legacy systems still relying on this device in fielded equipment.
What is the difference between PCI4451GJG and PCI4451GFN?
PCI4451GJG uses a 257-ball MicroStar BGA™ package (GJG), while PCI4451GFN uses a 256-ball BGA (GFN). Both share identical functionality, register sets, and electrical specifications. The GJG variant adds one ball - typically assigned to a dedicated ground or no-connect - to improve thermal and electrical performance in high-density layouts.
Does PCI4451GJG support CardBus 32-bit mode?
Yes. PCI4451GJG supports CardBus operation at 32-bit data width and 33 MHz clock rate per the PCI-to-CardBus Bridge Specification. Its internal data path logic enables full 32-bit PCI cycles to access 8-, 16-, and 32-bit cards, maximizing throughput for CardBus peripherals such as fast network adapters and storage controllers.
Can PCI4451GJG be used without an external EEPROM?
Yes. While PCI4451GJG includes a serial EEPROM interface for loading subsystem ID/vendor ID, it operates with default factory-programmed IDs if no EEPROM is present. The device initializes and functions fully in basic mode - EEPROM is optional for custom branding or driver matching requirements.
What does "Not Recommended for New Designs" mean for PCI4451GJG?
"Not Recommended for New Designs" (NRND) indicates TI no longer promotes PCI4451GJG for newly developed products due to market transition to USB and PCIe-based interfaces. However, the device remains fully functional, supported by existing drivers, and suitable for sustaining production of legacy platforms already designed around PCI4451GJG.
PCI4451GJG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 257-LFBGA
- Programmable:
- Not Verified
- Protocol:
- PCI CardBus
- Function:
- Controller
- Interface:
- PCI
- Standards:
- -
- Voltage - Supply:
- 3.3V, 5V
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 257-BGA MICROSTAR (16x16)
- Grade:
- -
- Qualification:
- -
PCI4451GJG FAQ
1.How can I place an order for PCI4451GJG through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI4451GJG 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 PCI4451GJG reliable?
The price and inventory of PCI4451GJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI4451GJG is usually 5 days.
3.What payment methods are accepted for PCI4451GJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI4451GJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI4451GJG?
PCI4451GJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI4451GJG 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 PCI4451GJG?
For technical support, including PCI4451GJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI4451GJG requirements.
6.How does Aetrix verify that PCI4451GJG is sourced from the original manufacturer or authorized distributors?
All PCI4451GJG 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 PCI4451GJG meets industry standards.
7.What is the process for return or replacement of PCI4451GJG?
All PCI4451GJG units undergo pre-shipment inspection (PSI). If there is an issue with PCI4451GJG, 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 PCI4451GJG part is unused and in its original packaging.
Return procedure for PCI4451GJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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