1.1 Features

The PCI2050B bridge supports the following features:

• Two 32-bit, 66-MHz PCI buses

• 3.3-V core logic with universal PCI interfaces compatible with 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

• 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

• Up to three delayed transactions in both directions

• Supports the frame-to-frame delay of only four PCI clocks from one bus to another

• Bus locking propagation

• Predictable latency per PCI Local Bus Specification

• Architecture configurable for PCI Bus Power Management Interface Specification

• CompactPCI hot-swap functionality

• Secondary bus is driven low during reset

• VGA/palette memory and I/O decoding options

• Advanced submicron, low-power CMOS technology

• 208-terminal PDV, 208-terminal PPM, or 257-terminal MicroStar BGA™ package