Overview
The Texas Instruments PCI2050B, specifically the PCI2050BGHK model, is a high-performance PCI-to-PCI bridge designed to provide a robust connection path between two independent 32-bit Peripheral Component Interconnect (PCI) buses. This bridge operates at a maximum bus frequency of 66 MHz, enabling efficient data transfer between masters on one PCI bus and targets on another. The PCI2050B is compliant with the *PCI Local Bus Specification* and the *PCI-to-PCI Bridge Specification* (Revision 1.1), making it an ideal solution for various PCI bus applications, including CompactPCI hot-swap environments.
Key Specifications
| Specification | Details |
|---|---|
| Package | 257-pin BGA MICROSTAR |
| Maximum Clock Frequency | 66 MHz |
| Supply Voltage | 3.3 V, 5 V |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +85°C |
| Data Bus Width | 32-bit |
| Mounting Type | Surface Mount (SMD/SMT) |
| Height | 0.9 mm |
| Length | 16 mm |
| Width | 16 mm |
Key Features
- Two 32-bit, 66-MHz PCI buses with support for 3.3-V and 5-V PCI signaling environments.
- Internal two-tier arbitration for up to nine secondary bus masters and supports an external secondary bus arbiter.
- Ten secondary PCI clock outputs and independent read and write buffers for each direction.
- Burst data transfers with pipeline architecture to maximize data throughput in both directions.
- Supports write combing for enhanced data throughput and up to three delayed transactions in both directions.
- Frame-to-frame delay of only four PCI clocks from one bus to another and bus locking propagation.
- Predictable latency per *PCI Local Bus Specification*.
- Architecture configurable for *PCI Bus Power Management Interface Specification*.
- CompactPCI hot-swap functionality and secondary bus driven low during reset.
- VGA/palette memory and I/O decoding options.
- Advanced submicron, low-power CMOS technology.
Applications
The PCI2050B is suitable for a variety of applications, including:
- Multifunction CompactPCI cards, enabling hot-swap compliance.
- Adapting single-function cards to hot-swap environments.
- Overcoming electrical loading limits of PCI buses by creating hierarchical buses.
- Systems requiring high-performance data transfer between PCI devices.
Q & A
- What is the maximum clock frequency supported by the PCI2050B?
The PCI2050B supports a maximum clock frequency of 66 MHz.
- What types of PCI signaling environments is the PCI2050B compatible with?
The PCI2050B is compatible with both 3.3-V and 5-V PCI signaling environments.
- How many secondary bus masters can the PCI2050B support?
The PCI2050B can support up to nine secondary bus masters.
- What is the frame-to-frame delay of the PCI2050B?
The frame-to-frame delay is only four PCI clocks from one bus to another).
- Is the PCI2050B compliant with any specific PCI specifications?
- What package options are available for the PCI2050B?
The PCI2050B is available in 208-terminal LQFP, 208-terminal PPM, and 257-terminal MicroStar BGA packages).
- What is the operating temperature range of the PCI2050B?
The operating temperature range is from -40°C to +85°C).
- Does the PCI2050B support CompactPCI hot-swap functionality?
- What technology is used to achieve low system power consumption in the PCI2050B?
- Can the PCI2050B be used as a drop-in replacement for other PCI bridge chips?
