OR3TP12

Data Sheet March 2000 ORCA® OR3TP12 Field-Programmable System Chip (FPSC) Embedded Master/Target PCI Interface Introduction Lucent Technologies Microelectronics Group has developed a solution for designers who need the many advantages of an FPGA-based design implementation coupled with the high bandwidth of the industry-standard PCI interface. The ORCA OR3TP12 FPSC provides a full-featured 33/50/66 MHz, 32-/64-bit PCI interface, fully designed and tested, in hardware, plus FPGA logic for user-programmable functions. Table 1. PCI Local Bus Data Rates Clock Frequency (MHz) 33 33 66 66 Data Path Width (bits) 32 64 32 64 Peak Data Rate (Mbytes) 132 264 264 528 PCI Local Bus PCI local bus, or simply, PCI bus, has become an industry-standard interface protocol for use in applications ranging from desktop PC busing to highbandwidth backplanes in networking and communications equipment. The PCI bus specification* provides for both 5 V and 3.3 V signaling environments. The PCI interface clock speed is specified in the range from dc to 66 MHz with detailed specifications at 33 MHz and 66 MHz as well as recommendations for 50 MHz operation. Data paths are defined as either 32-bit or 64-bit. These data path and frequency combinations allow for the peak data transfer rates described in Table 1. The PCI bus is electrically specified so that no glue logic is required to interface to the bus—PCI devices interface directly to the PCI bus. Other features include registers for device and sub...