Overview
The Texas Instruments PCI2050BIZWT is a high-performance PCI-to-PCI bridge designed to provide a connection path between two peripheral component interconnect (PCI) buses. This bridge operates at a maximum bus frequency of 66 MHz, enabling efficient transactions between masters on one 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 suitable for various applications requiring high data throughput and power efficiency.
Key Specifications
| Specification | Details |
|---|---|
| Bus Frequency | Up to 66 MHz |
| Bus Width | Two 32-bit PCI buses |
| Signaling Environment | Compatible with 3.3-V and 5-V PCI signaling environments |
| Core Logic Voltage | 3.3 V |
| Arbitration | Internal two-tier arbitration for up to nine secondary bus masters; supports external secondary bus arbiter |
| PCI Clock Outputs | Ten secondary PCI clock outputs |
| Buffering | Independent read and write buffers for each direction |
| Data Transfer | Burst data transfers with pipeline architecture; supports write combining |
| Delayed Transactions | Up to three delayed transactions in both directions |
| Frame-to-Frame Delay | Four PCI clocks from one bus to another |
| Package | 208-terminal LQFP (PDV) |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- High-performance connection path between two PCI buses
- Supports burst mode transfers to maximize data throughput
- Internal two-tier arbitration for up to nine secondary bus masters
- CompactPCI hot-swap functionality for multifunction compact PCI cards
- Advanced submicron, low-power CMOS technology for reduced power consumption
- Predictable latency per *PCI Local Bus Specification*
- Architecture configurable for *PCI Bus Power Management Interface Specification* (Revision 1.1)
- Supports write combining for enhanced data throughput
- Bus locking propagation and VGA/palette memory and I/O decoding options
Applications
The PCI2050B is ideal for various applications requiring high-performance PCI-to-PCI bridging, including:
- Multifunction compact PCI cards
- Adapting single-function cards to hot-swap compliance
- Industrial and embedded systems where high data throughput and low power consumption are critical
- Systems needing to overcome electrical loading limits of PCI buses by creating hierarchical buses
Q & A
- What is the maximum bus frequency supported by the PCI2050B?
The PCI2050B supports a maximum bus frequency of 66 MHz.
- Is the PCI2050B 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.
- Does the PCI2050B support external bus arbitration?
- What is the purpose of the write combining feature in the PCI2050B?
The write combining feature combines separate sequential memory write transactions into a single burst transaction to enhance data throughput.
- 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 the PCI Local Bus Specification and PCI-to-PCI Bridge Specification?
- What package types are available for the PCI2050B?
The PCI2050B is available in 208-terminal LQFP (PDV) and other package options like 208-terminal PPM and 257-terminal MicroStar BGA™.
- What is the operating temperature range of the PCI2050B?
The operating temperature range is -40°C to 85°C.
- Does the PCI2050B support CompactPCI hot-swap functionality?
