This paper describes the second generation Optimized Reconfigurable Cell Array (ORCA) FieldProgrammable Gate Arrays (FPGAs). Architectural innovations combined with advanced OSpm process technology result in a family of high capacity and high speed FPGAs. New types of routing resources are included on the FPGA to ensure routing completion. The first ORCA part in the 2C series, the ATT2C15, contains approximately 2.5 million FETs and has a typical logic capability of about 15, OOO usable gates. Preliminary benchmark results confirm the speed and logic capacity of the new parts.

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This paper describes the new AT&T Optimized Reconfigurable Cell Array (ORCA) 2CA and 2TA series of Field-Programmable Gate Arrays (FPGAs). Both series are based on the ORCA 2C/T architecture, but migrated to the advanced AT&T 0 . 3 5~ CMOS processes. These two processes are individually optimized for SV and 3.3V operations. In addition, architectural innovations are incorporated into the new series to enhance both performance and functionality. These include:Efficient support of parallel multiplier Efficient support of synchronous single-port and dual-port Streamlined creation of large memory using port-enable Easy system integration with the 5V-tolerant inputloutput buffers, found on the 3.3V 2TA series.As the result, the ORCA 2CAl2TA arrays are significantly smaller and 15%/30% faster (PFU speed) than the corresponding 0 . 5~ 2C/T arrays. memories control and internal tristate buffers

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