A new generation of SRAM-based FPGAs built on the popular Series 2 platform is the ORCA OR3LXXxB FPGAs.
With improvements and advances targeted at today's high-speed designs and tomorrow's systems on a chip, the Series 2 and 3 FPGA lines from Lucent Technologies Microelectronics Group. The OR3LxxxB Series more than doubles the logic available in each logic block and incorporates system-level features that can further reduce logic requirements and increase system speed. It was designed from the beginning to be synthesis friendly and to reduce place and route times while maintaining the complete routability of the ORCA Series 2 devices. Devices from ORCA OR3LxxxB are available in a range of packaging, speed grades, and temperature ranges and have numerous unique, patented improvements.
The ORCA OR3LxxxB Series FPGAs consist of three basic elements: PLCs, programmable input/output cells (PICs), and system-level features. An array of PLCs is surrounded by PICs. Each PLC contains a PFU,a SLIC, local routing resources, and confiquration RAM.
The PFU is where the majority of the FPGA logic is executed, however the SLIC is where decoders, PAL-like operations, and 3-state buffering can be carried out. The device inputs and outputs offered by the PICs can be used to register signals, conduct input demultiplexing, output multiplexing, and other operations on two output signals. The MPI and the PCM are a couple of the system-level operations.
