My Inquiry
My Account
Texas Instruments PCI1250AGFN
- Part No.:
- PCI1250AGFN
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- -
- Datasheet:
-
PCI1250AGFN.pdf
- Description:
- PCMCIA BUS CONTROLLER PBGA256
- Quantity:
- Payment:
- Shipping:
Inventory:7,156
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCI1250AGFN from Texas Instruments is a 32-bit PCI-to-PC Card/CardBus bridge controller supporting two independent sockets, 3.3-V core logic with universal 3.3-V/5-V PCI signaling compatibility, pipelined architecture enabling >130 MB/s throughput, and integrated zoom video (ZV) path for direct VGA routing. It serves as the primary interface controller in notebook and desktop systems requiring hot-pluggable PC Card expansion.
For engineers reviewing the PCI1250AGFN datasheet, PCI1250AGFN pinout, PCI1250AGFN application, or PCI1250AGFN equivalent, this page delivers verified technical context on ExCA register compatibility, dual-voltage socket support (5-V/3.3-V PC Card and 3.3-V CardBus), serialized IRQ handling, ZV signal mapping, and TI TPS2206 power switch interface integration - all critical for legacy mobile system design and PCMCIA subsystem validation.
Technical Context
The PCI1250AGFN implements a dual-bus bridging architecture: one 32-bit 33-MHz PCI interface compliant with Revision 2.1 and Power Management/ACPI 1.0 specifications, and two independent 68-pin PC Card interfaces supporting both 16-bit PC Card (R2.1) and 32-bit CardBus protocols. Its pipeline enables concurrent PCI-to-CardBus and CardBus-to-PCI burst transfers.
It integrates ExCA-compatible configuration space per socket, supports distributed DMA (DDMA) and PC/PCI DMA, provides 8-way ISA-IRQ multiplexing with serializable IRQSER output, and includes dedicated ZV signal routing (19 video + 4 audio lines) redefining 23 pins of each 68-pin interface when enabled. All card signals are internally buffered for hot insertion/removal without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Type | PCI-to-PC Card/CardBus bridge with ExCA register compatibility and Intel 82365SL-DF software alignment. |
| PCI Compliance | PCI Local Bus Specification Rev 2.1, Power Management Spec, ACPI 1.0, and PCI Bus Lock (LOCK) support. |
| PC Card Support | Two independent sockets: mix-and-match 5-V/3.3-V 16-bit PC Cards and 3.3-V CardBus cards with hot insertion. |
| Data Throughput | >130 MB/s sustained burst transfer rate between PCI and CardBus via pipelined internal data path. |
| Zoom Video Path | Internally buffered ZV interface with 19 video + 4 audio signals routed directly to VGA controller; reduces board-level ZV compliance effort. |
| Power Supply | 3.3-V core logic; separate VCCA/VCCB rails for socket A/B signaling voltage detection; VCCZ for ZV interface (3.3-V or 5-V). |
| Interrupt Options | Four configurable modes: parallel PCI, parallel ISA, serialized ISA, or serialized ISA+PCI via IRQSER pin. |
Pinout & Package
PCI1250AGFN is packaged in a 256-pin Fine-Pitch Ball Grid Array (GFN package, bottom view), with terminal groups including PCI signals (AD31–AD0, C/BE3–C/BE0, CLKRUN, PCLK, PRST), dual 68-pin PC Card interfaces (A_ and B_ prefixed), zoom video (ZV_HREF, ZV_VSYNC, ZV_Y[7:0], ZV_UV[7:0], ZV_SCLK/MCLK/PCLK/LRCLK/SDATA), power (VCC, VCCA, VCCB, VCCI, VCCP, VCCZ, GND), and system I/O (GPIO0–3, LEDA1/LEDA2, SPKROUT, SUSPEND, RI_OUT/PME).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD31–AD0 | PCI address/data bus | Multiplexed 32-bit address/data lines; sampled on rising edge of PCLK; used for configuration, memory, and I/O cycles. |
| C/BE3–C/BE0 | PCI command/byte enable | Defines bus command during address phase; selects active byte lanes (AD[7:0], AD[15:8], etc.) during data phase. |
| A_A25–A_A0 / B_A25–B_A0 | 16-bit PC Card address | 26-bit address bus per socket; A25 is MSB; supports memory and I/O addressing for 16-bit cards. |
| ZV_Y7–ZV_Y0 / ZV_UV7–ZV_UV0 | Zoom video data | 16-bit YUV 4:2:2 video data path; enables direct VGA routing without external buffering or level-shifting. |
| IRQSER/INTB | Serialized interrupt output | Primary interrupt signaling mode; carries multiplexed ISA and/or PCI IRQs in serial stream to reduce pin count. |
| VCCA / VCCB | Socket power rail sense | Indicates signaling environment (5-V or 3.3-V) for Slot A and Slot B independently; enables mixed-voltage operation. |
Key Features
| Feature | Design Value |
|---|---|
| ExCA Register Compatibility | Fully compatible with Intel 82365SL-DF register map, enabling drop-in driver reuse in legacy PCMCIA OS stacks. |
| Dual Independent Sockets | Separate configuration space, memory/I/O windows (5 memory + 2 I/O per 16-bit socket; 2 memory + 2 I/O per CardBus socket), and activity LEDs per slot. |
| ZV Hardware Acceleration | On-die ZV path eliminates need for external FIFOs or glue logic; guarantees CardBus loading compliance for VGA-attached zoom video. |
| Serialized Interrupt Architecture | Reduces interrupt pin count by multiplexing up to 15 ISA IRQs and PCI interrupts onto single IRQSER line with programmable routing. |
| TI TPS2206 Interface | Native 3-wire serial interface (CLOCK/DATA/LATCH) for dual power switch control; simplifies 5-V/3.3-V socket power sequencing. |
Applications
| Mobile Notebook Expansion | Legacy Industrial PCMCIA Host |
|---|---|
|
Use Scenario: Adding modem, LAN, or flash storage via hot-swappable PC Card in space-constrained laptop designs. IC Role / Device Role / Timing Role: Primary PCI-to-PC Card bridge managing socket arbitration, voltage translation, and ExCA-compliant configuration space access. Use Value: Enables full 32-bit CardBus bandwidth and 16-bit PC Card backward compatibility without external level shifters or buffer ICs. |
Use Scenario: Retrofitting PCI-based industrial controllers with PCMCIA peripheral support for fieldbus adapters or legacy I/O modules. IC Role / Device Role / Timing Role: System-level bridge translating PCI cycles into PC Card memory/I/O transactions with programmable wait-state insertion. Use Value: Supports 16-bit DMA on both sockets and distributed DMA (DDMA), reducing CPU overhead in deterministic real-time environments. |
| Zoom Video Capture Systems | Embedded PC/104-Plus Expansion |
|
Use Scenario: Integrating analog video capture cards with VGA output in medical imaging or digital signage platforms. IC Role / Device Role / Timing Role: Dedicated ZV path provider routing YUV 4:2:2 video directly to VGA controller with synchronized HREF/VSYNC clocks. Use Value: Eliminates external video FIFOs and timing-critical PCB routing; guarantees ZV electrical compliance per CardBus spec. |
Use Scenario: Extending PC/104-Plus stack with PC Card slots for legacy test equipment or military comms modules. IC Role / Device Role / Timing Role: Multifunction PCI device with five memory windows and two I/O windows per socket, supporting subtractive decoding. Use Value: Allows flexible resource allocation across multiple stacked peripherals while maintaining ISA-IRQ compatibility for legacy BIOS support. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PC Card controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCI1220AGFN | Single-socket variant; lacks ZV path; no IRQSER serialization; lower pin count (160-BGA); reduced memory window count (3 per socket). | Suitable only for cost-sensitive single-slot designs without zoom video or serialized interrupt requirements. | Select PCI1220AGFN only when dual-socket, ZV, or IRQSER functionality is unnecessary and board area is constrained. |
| PCI1251AGFN | Pin-compatible upgrade with enhanced power management (deeper sleep states), improved thermal specs, and extended lifecycle support beyond 1997 vintage. | Preferred for new designs requiring long-term availability and lower standby current in battery-powered notebooks. | PCI1251AGFN offers identical register set and socket interface but adds modern power gating - ideal for production continuity where PCI1250AGFN is obsolete. |
Compared with PCI1250AGFN, PCI1220AGFN sacrifices socket count and ZV capability for footprint reduction, while PCI1251AGFN retains full functional equivalence with upgraded power efficiency and extended manufacturability - making it the recommended migration path for sustaining legacy PCMCIA host designs.
Availability
PCI1250AGFN is available at Aetrix Electronics and suitable for mobile computing, industrial PCMCIA host systems, zoom video capture platforms, and embedded PC/104-Plus expansion requiring stable component supply and long-lifecycle sourcing.
Supply support for PCI1250AGFN 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 founded in 1930, specializing in analog, embedded processing, and connectivity technologies with broad industrial, automotive, and computing applications.
The PCI1250AGFN belongs to TI's PC Card controller product line, designed specifically to enable PCI-based host systems to support hot-pluggable 16-bit PC Cards and 32-bit CardBus peripherals in space- and power-constrained mobile platforms.
FAQ
What is the primary function of the PCI1250AGFN in a system architecture?
The PCI1250AGFN serves as a high-performance PCI-to-PC Card/CardBus bridge controller. It enables a 32-bit PCI host bus to interface with two independent PC Card sockets supporting both 16-bit PC Cards and 32-bit CardBus peripherals. Its role includes ExCA-compliant configuration space management, voltage-aware socket control, pipelined data transfer, and integrated zoom video routing - making PCI1250AGFN essential for legacy mobile and industrial expansion systems.
Does the PCI1250AGFN support mixed-voltage operation across its two PC Card sockets?
Yes, the PCI1250AGFN supports mixed-voltage operation: VCCA and VCCB pins independently sense and adapt to 5-V or 3.3-V signaling environments per socket. This allows simultaneous use of 5-V 16-bit PC Cards in Socket A and 3.3-V CardBus cards in Socket B, with automatic voltage translation and hot-insertion safety - a core capability confirmed in the SCPS014B datasheet section "Mix-and-Match 5-V/3.3-V PC Card and 3.3-V CardBus Cards".
How does the PCI1250AGFN implement zoom video (ZV) functionality, and what signals are involved?
The PCI1250AGFN provides an internally buffered zoom video path that redefines 23 pins of each 68-pin PC Card interface when ZV is enabled. It outputs 19 video signals (ZV_HREF, ZV_VSYNC, ZV_Y[7:0], ZV_UV[7:0]) and 4 audio signals (ZV_SCLK, ZV_MCLK, ZV_LRCLK, ZV_SDATA) directly to the VGA controller. This eliminates external buffering and guarantees CardBus ZV loading compliance - a feature explicitly documented in the "Zoom Video" section of the PCI1250AGFN datasheet (SCPS014B, pp. 3, 9).
Is the PCI1250AGFN pin-compatible with the Intel 82365SL-DF controller?
Yes, the PCI1250AGFN is register-compatible with the Intel 82365SL-DF ExCA controller, allowing reuse of existing drivers and firmware. However, it is not physically pin-compatible due to differing package types (256-pin GFN BGA vs. 128-pin PQFP) and expanded feature set (dual sockets, ZV, IRQSER). The compatibility is strictly at the ExCA register level - confirmed in the "Description" section of SCPS014B: "The PCI1250A is register compatible with the Intel 82365SL-DF ExCA controller."
What interrupt architectures does the PCI1250AGFN support, and how is IRQSER used?
The PCI1250AGFN supports four interrupt configurations: parallel PCI, parallel ISA, serialized ISA only, or serialized ISA+PCI. IRQSER/INTB is the dedicated serial interrupt output pin that carries multiplexed IRQs using a defined protocol. Up to 15 ISA IRQs can be mapped to IRQMUX[7:0] outputs and serialized onto IRQSER, reducing interrupt pin count while preserving legacy OS compatibility - detailed in the "System Interrupt" terminal function table (SCPS014B, p. 8).
PCI1250AGFN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Programmable:
- Not Verified
- Protocol:
- -
- Function:
- -
- Interface:
- -
- Standards:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Grade:
- -
- Qualification:
- -
PCI1250AGFN FAQ
1.How can I place an order for PCI1250AGFN through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI1250AGFN 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 PCI1250AGFN reliable?
The price and inventory of PCI1250AGFN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI1250AGFN is usually 5 days.
3.What payment methods are accepted for PCI1250AGFN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI1250AGFN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI1250AGFN?
PCI1250AGFN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI1250AGFN 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 PCI1250AGFN?
For technical support, including PCI1250AGFN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI1250AGFN requirements.
6.How does Aetrix verify that PCI1250AGFN is sourced from the original manufacturer or authorized distributors?
All PCI1250AGFN 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 PCI1250AGFN meets industry standards.
7.What is the process for return or replacement of PCI1250AGFN?
All PCI1250AGFN units undergo pre-shipment inspection (PSI). If there is an issue with PCI1250AGFN, 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 PCI1250AGFN part is unused and in its original packaging.
Return procedure for PCI1250AGFN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCI1250AGFN Tags
-
PTN5150AHXMP
NXP Semiconductors
-
USB3740B-AI9-TR
Microchip Technology
-
USB3740B-AI2-TR
Microchip Technology
-
USB3300-EZK-TR
Microchip Technology
-
USB3300-EZK
Microchip Technology
-
FUSB340TMX
onsemi
-
FUSB302BMPX
onsemi
-
DP83826IRHBR
Texas Instruments
-
MCP2518FDT-E/QBB
Microchip Technology
-
FUSB302MPX
onsemi
-
MCP2518FDT-E/SL
Microchip Technology
-
FT260Q-R
FTDI, Future Technology Devices International Ltd
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
