Overview
The Texas Instruments PCI2250PCM is a high-performance 32-bit, 33-MHz PCI-to-PCI bridge designed to provide a robust connection path between two peripheral component interconnect (PCI) buses. This bridge supports transactions between masters on one PCI bus and targets on another, allowing bridged transactions to occur concurrently on both buses. It is particularly suited for applications requiring high data throughput and compliance with various PCI specifications.
Key Specifications
| Specification | Detail |
|---|---|
| Bus Type | 32-bit, 33-MHz PCI-to-PCI bridge |
| Core Logic Voltage | 3.3-V core logic with universal PCI interface compatible with 3.3-V and 5-V PCI signaling environments |
| Number of PCI Buses | Two 32-bit, 33-MHz PCI buses |
| Arbitration | Internal two-tier arbitration for up to four secondary bus masters; supports external secondary bus arbiter |
| Data Transfer | Burst data transfers with pipeline architecture to maximize data throughput |
| Decoding Options | Programmable extension windows and port decode options; positive decoding or subtractive decoding on the primary interface |
| Buffering | Independent read and write buffers for each direction |
| Clock Outputs | Five secondary PCI clock outputs |
| Power Management | Compliant with PCI Power Management Interface Specification Revisions 1.0 and 1.1; PCI CLKRUN bridging support |
| Packaging | 160-pin QFP (PCM) and 176-pin thin QFP (PGF) |
| Hot Swap Capability | Compact-PCI (CPCI) hot-swap extended capability |
Key Features
- High-performance connection path between two PCI buses with concurrent transaction support.
- Compliant with PCI Local Bus Specification and PCI-to-PCI Bridge Architecture Specification.
- Supports burst-mode transfers to maximize data throughput.
- Internal two-tier arbitration for up to four secondary bus masters and external secondary bus arbiter support.
- Compact-PCI (CPCI) hot-swap extended capability for multifunction compact-PCI cards and single function card adaptation.
- Advanced submicron, low-power CMOS technology for low system power consumption.
- PCI CLKRUN bridging support for low-power mobile and docking applications.
- Programmable extension windows and various decode options.
- Independent read and write buffers for each direction.
- Provides VGA palette memory and I/O, and subtractive decoding options.
Applications
The PCI2250PCM is ideal for various applications, including:
- Compact-PCI systems requiring hot-swap capability.
- High-performance computing systems needing multiple PCI buses.
- Embedded systems that require low power consumption and high data throughput.
- Industrial control systems where reliable and efficient data transfer is crucial.
- Mobile and docking applications that benefit from PCI CLKRUN bridging support.
Q & A
- What is the primary function of the PCI2250PCM?
The primary function of the PCI2250PCM is to provide a high-performance connection path between two peripheral component interconnect (PCI) buses. - What are the key specifications of the PCI2250PCM?
The PCI2250PCM is a 32-bit, 33-MHz PCI-to-PCI bridge with 3.3-V core logic, supporting two PCI buses, internal two-tier arbitration, and burst data transfers. - Is the PCI2250PCM compliant with any specific PCI specifications?
Yes, it is compliant with the PCI Local Bus Specification and the PCI-to-PCI Bridge Architecture Specification. - What kind of power management does the PCI2250PCM support?
The PCI2250PCM is compliant with PCI Power Management Interface Specification Revisions 1.0 and 1.1 and supports PCI CLKRUN bridging for low-power applications. - Does the PCI2250PCM support hot-swap capability?
Yes, it supports Compact-PCI (CPCI) hot-swap extended capability. - What are the packaging options for the PCI2250PCM?
The PCI2250PCM is available in 160-pin QFP (PCM) and 176-pin thin QFP (PGF) packages. - How does the PCI2250PCM manage data transfer?
The PCI2250PCM supports burst data transfers with a pipeline architecture to maximize data throughput. - Can the PCI2250PCM be used in mobile applications?
Yes, it is suitable for mobile and docking applications due to its low-power design and PCI CLKRUN bridging support. - What additional decoding options does the PCI2250PCM provide?
The PCI2250PCM provides programmable extension windows and various decode options, including positive decoding or subtractive decoding on the primary interface. - Is the PCI2250PCM designed for low power consumption?
Yes, it utilizes advanced submicron, low-power CMOS technology to achieve low system power consumption.
