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Texas Instruments PCI2040PGE
- Part No.:
- PCI2040PGE
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 144-LQFP
- Datasheet:
-
PCI2040PGE.pdf
- Description:
- IC PCI-DSP BRIDGE CNTRLR 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:216
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Product details
Overview
PCI2040PGE from Texas Instruments is a PCI-to-PCI bridge IC designed to extend PCI bus segments in embedded and industrial systems. It supports 32-bit/33 MHz PCI Local Bus v2.1, provides 256-byte configuration space, implements arbitration and address translation, and operates at 3.3 V I/O with 3.3 V or 5 V core supply compatibility. It is used in multi-slot industrial backplanes and legacy PCI expansion chassis.
For engineers reviewing the PCI2040PGE datasheet, PCI2040PGE pinout, PCI2040PGE application, or PCI2040PGE equivalent, key selection considerations include its dual-bus arbitration logic, Type 0/Type 1 configuration support, programmable memory and I/O address windows, latency timer settings, and compliance with PCI v2.1 electrical and protocol requirements.
Technical Context
The PCI2040PGE implements a transparent PCI-to-PCI bridge with separate primary and secondary bus interfaces, supporting both Type 0 and Type 1 configuration cycles. It includes integrated address decoding, prefetchable and non-prefetchable memory window mapping, and I/O space forwarding with byte-enable handling.
It features programmable base/limit registers for memory and I/O windows, supports PCI bus mastering on both sides, and incorporates internal arbitration logic for secondary bus grant control. The device does not include integrated clock generation or PCIe conversion - it is strictly a parallel PCI v2.1 bridge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCI Specification | Complies with PCI Local Bus Specification Rev 2.1 - ensures interoperability with standard 32-bit/33 MHz PCI peripherals and hosts. |
| Bus Width & Speed | 32-bit data path, 33 MHz operation - defines maximum theoretical bandwidth of 132 MB/s per bus segment. |
| Configuration Space | 256-byte header (Type 1) - enables full bridge descriptor visibility and register-level control of windowing and bridging behavior. |
| Voltage Support | 3.3 V I/O, 3.3 V or 5 V core - allows integration into mixed-voltage PCI systems without level-shifting circuitry. |
| Memory Windows | Two programmable prefetchable/non-prefetchable memory ranges - permits isolation and remapping of downstream memory regions. |
| I/O Windows | One programmable I/O address range - enables selective forwarding of I/O cycles to secondary bus devices. |
Pinout & Package
Packaged in a 144-pin Plastic Quad Flatpack (PQFP), designated PGE per TI mechanical drawing MTQF017A. JEDEC MS-026 compliant, 20.20 mm × 20.20 mm body, 0.50 mm lead pitch, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Primary bus clock input | Accepts 33 MHz PCI clock; drives internal timing and synchronizes primary-side transactions. |
| CLKOUT | Secondary bus clock output | Provides buffered 33 MHz clock to downstream PCI devices; phase-aligned with CLKIN. |
| AD[31:0] | Address/data multiplexed bus | Time-multiplexed 32-bit address and data lines for primary bus; requires external latch for address capture. |
| C/BE[3:0]# | Command/Byte Enable | Encodes transaction type (I/O read/write, memory read/write) and selects active byte lanes during data phase. |
| FRAME#, IRDY#, TRDY# | PCI handshake signals | Control transaction initiation, initiator readiness, and target readiness - essential for pipelined and burst transfers. |
| REQ#, GNT# | Arbitration request/grant | Primary-side arbitration interface; connects to system arbiter to manage bus ownership. |
Key Features
| Feature | Design Value |
|---|---|
| Transparent bridging | Enables seamless plug-and-play extension of PCI bus without requiring driver or OS modification. |
| Programmable memory windows | Allows dynamic allocation of upstream memory space to downstream peripherals, supporting flexible resource partitioning. |
| Type 0/Type 1 configuration support | Permits correct enumeration of both endpoint devices and subordinate bridges in hierarchical PCI topologies. |
| Latency timer control | Configurable timer prevents single device monopolizing secondary bus - critical for real-time deterministic response. |
| 3.3 V / 5 V core voltage select | Hardware-selectable core supply enables deployment in legacy 5 V or modern 3.3 V PCI environments. |
Applications
| Industrial Backplane Expansion | Legacy PCI Add-in Card Hub |
|---|---|
Use Scenario: Adding multiple PCI slots to an industrial controller chassis where motherboard has only one PCI slot. IC Role / Device Role / Timing Role: PCI2040PGE acts as a transparent bridge, isolating electrical loading while extending configuration and transaction routing across buses. Use Value: Enables modular I/O expansion using standard PCI cards without custom drivers or BIOS updates. | Use Scenario: Integrating legacy PCI measurement cards (e.g., DAQ, motion control) into newer host systems with limited native PCI slots. IC Role / Device Role / Timing Role: PCI2040PGE serves as a protocol-compliant bus repeater, preserving signal integrity and timing margins across extended traces. Use Value: Maintains full PCI v2.1 functional compatibility including burst transfers, dual addressing, and error reporting. |
| Medical Imaging Subsystem Interconnect | Test Equipment Modular Chassis |
Use Scenario: Connecting high-bandwidth imaging processors and frame grabbers within a diagnostic imaging platform. IC Role / Device Role / Timing Role: PCI2040PGE manages concurrent memory-mapped DMA transfers between subsystems while enforcing strict latency boundaries. Use Value: Guarantees deterministic access to shared memory windows, supporting real-time image buffering and processing pipelines. | Use Scenario: Building reconfigurable ATE platforms where instrument modules plug into a central PCI-based mainframe. IC Role / Device Role / Timing Role: PCI2040PGE functions as a configurable bus segment manager, enabling hot-plug-aware enumeration and independent power domain control. Use Value: Supports modular test system architecture with isolated fault domains and independent reset sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCI-to-PCI bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PLX Technology PCI9052 | PCI-to-Local Bus bridge (not PCI-to-PCI); lacks secondary PCI interface and transparent bridging logic. | Used for connecting custom ASICs/FPGAs to PCI, not for bus extension. | Select only when interfacing non-PCI peripherals - not a functional substitute for PCI2040PGE. |
| Intel 21152 | PCI-to-PCI bridge with identical v2.1 compliance, but uses 208-pin PQFP (PQ208) and requires different power sequencing. | Valid drop-in replacement in function and protocol, but demands PCB layout revision due to package and thermal pad differences. | Choose when higher thermal margin or Intel ecosystem alignment is prioritized over footprint reuse. |
Compared with PLX PCI9052 and Intel 21152, the PCI2040PGE uniquely balances pin-compatible PCI extension capability, 144-pin footprint efficiency, and dual-voltage core flexibility - making it optimal for space-constrained industrial backplanes requiring minimal board redesign.
Availability
PCI2040PGE is available at Aetrix Electronics and suitable for industrial backplane expansion, legacy PCI add-in card hubs, and medical imaging subsystem interconnects requiring stable component supply and long-term obsolescence management.
Supply support for PCI2040PGE 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, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.
The PCI2040PGE belongs to TI's PCI interface product line, developed specifically to enable robust, standards-compliant bus extension in mission-critical embedded systems where reliability and long-term support are mandatory.
FAQ
What is the primary function of the PCI2040PGE?
The PCI2040PGE is a PCI-to-PCI bridge IC that extends a 32-bit/33 MHz PCI bus by creating an electrically isolated secondary segment. It handles configuration, address translation, and transaction forwarding while maintaining full PCI v2.1 compliance. The PCI2040PGE enables modular expansion without modifying host software or drivers, making it ideal for industrial backplanes and legacy system upgrades.
Does the PCI2040PGE support PCI v2.2 or later specifications?
No, the PCI2040PGE is designed strictly for PCI Local Bus Specification Revision 2.1. It does not implement features introduced in v2.2 or later, such as 66 MHz operation, 64-bit extensions, or PCI-X signaling. Systems requiring those capabilities must use newer bridge ICs. The PCI2040PGE remains fully functional and interoperable within v2.1-compliant environments.
Can the PCI2040PGE operate with a 5 V core supply?
Yes, the PCI2040PGE supports both 3.3 V and 5 V core supply voltages, selected via the VCC_SEL pin. This dual-voltage capability allows integration into mixed-voltage systems - for example, connecting legacy 5 V PCI cards to a 3.3 V host. The I/O interface remains fixed at 3.3 V, ensuring signal compatibility regardless of core voltage choice. The PCI2040PGE datasheet specifies absolute maximum ratings and recommended operating conditions for both configurations.
Is the PCI2040PGE pin-compatible with the Intel 21152?
No, the PCI2040PGE is not pin-compatible with the Intel 21152. While both are PCI v2.1-compliant bridges, the PCI2040PGE uses a 144-pin PQFP (PGE) package, whereas the 21152 uses a 208-pin PQFP (PQ208). Pin count, spacing, and signal assignment differ significantly. Board-level replacement requires layout revision. The PCI2040PGE offers identical protocol functionality but in a more compact footprint optimized for space-constrained designs.
What configuration space size does the PCI2040PGE provide?
The PCI2040PGE implements a full 256-byte PCI configuration space conforming to Type 1 header format, required for bridges. This includes Base Address Registers (BARs) for memory and I/O windows, Primary/Secondary Latency Timers, Subsystem ID/VID, and Bridge Control/Status registers. All configuration registers are accessible via standard PCI configuration read/write cycles. The PCI2040PGE uses this space to define window mappings, enable/disable forwarding, and configure arbitration behavior.
PCI2040PGE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 144-LQFP
- Programmable:
- Not Verified
- Protocol:
- -
- Function:
- Controller
- Interface:
- PCI
- Standards:
- -
- Voltage - Supply:
- 3.3V, 5V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 144-LQFP (20x20)
- Grade:
- -
- Qualification:
- -
PCI2040PGE FAQ
1.How can I place an order for PCI2040PGE through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI2040PGE 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 PCI2040PGE reliable?
The price and inventory of PCI2040PGE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI2040PGE is usually 5 days.
3.What payment methods are accepted for PCI2040PGE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI2040PGE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI2040PGE?
PCI2040PGE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI2040PGE 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 PCI2040PGE?
For technical support, including PCI2040PGE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI2040PGE requirements.
6.How does Aetrix verify that PCI2040PGE is sourced from the original manufacturer or authorized distributors?
All PCI2040PGE 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 PCI2040PGE meets industry standards.
7.What is the process for return or replacement of PCI2040PGE?
All PCI2040PGE units undergo pre-shipment inspection (PSI). If there is an issue with PCI2040PGE, 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 PCI2040PGE part is unused and in its original packaging.
Return procedure for PCI2040PGE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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