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| PSB-64 PCI-SCI Bridge Chips for System Area Networks Dolphins PCI-SCI Bridge (PSB) Chip provides a reliable, very high bandwidth and low-latency connection between PCI buses, making it ideally suited for server clustering and high performance system area network applications. The PSB-64 chip is designed to meet the requirements for high availability clustering and remote I/O applications. In a unique architecture combining both direct memory access (DMA) and remote memory access (RMA), high performance message passing protocols and transparent bus bridging operations are supported. The PSB chip is based on the ANSI/IEEE Features and Benefits * PCI 2.1 compliant, 64 bits, 33 MHz PCI bus * ANSI/IEEE 1596-1992 Scalable Coherent Interface (SCI) standard compliant * ANSI/IEEE 1159.1 (JTAG) support * Compatible with Dolphin Link Controllers * Chaining (Read/Write) DMA Engine * Up to 4096 map entries in offchip SRAM * 4 - 512 KBytes page size * Hostbridge capability (PCI arbiter, Event reporter) * Read prefetching/write gathering * B-LinkTM Compliant Scalable Coherent Interface (SCI) standard. By use of the DMA controller chunks of memory can be copied directly between PCI buses in a single copy operation with no need for intermediate buffering in adapter cards or buffer memories. This feature greatly reduces latency and lowers overhead of data transfers. The DMA controller supports both read and write operations. The remote memory access (RMA) feature of the PSB enables ultra-low latency messaging and low overhead and transparent I/O transfers. In RMA mode, PCI bus memory transactions are converted into corresponding SCI bus memory transactions allowing two physically separate PCI buses to appear as one. This feature allows applications to send data between system memories without the use of operating system services, thus greatly reducing latency and overhead. The PSB has built-in address translation, error detection and protection mechanisms to support highly reliable connections. PSB-64 Block Diagram PCI 2.1 64-bits/33MHz Slave DMA Master Config Stream Buffer Stream Control 8 x Read 8 x Write SCI Responder 2 x Req ReqSend ResRecv BLink Interface Unit BLink 66 MHz Technical Specifications PCI Specification PCI Specification 2.1 64 bits, 33 MHz operation 3.3V/5V PCI bus operation B-Link Specification 64 bits, 50 MHz operation 500 Mbytes/sec bandwidth SCI Specification ANSI/IEEE 1596-1992 Scalable Coherent Interface (SCI) compliant Dolphin Interconnect Solutions Offices: Packaging and Power 313 Ball Grid Array 3 Watts 3.3V or 5V I/O Operating Temperature Operating Temperature: 4C-32C Relative Humidity: 5%-95% non-condensing Performance 33 MHz 140 MBytes/sec RMA 107 MBytes/sec DMA Product Code PSB-64 (D667) Dolphin Headquarters USA: 3609 East Thousand Oaks Blvd, Suite 209 Westlake Village, CA 91362-3624 Phone: (805) 371-9493 Fax: (805) 371-9785 Dolphin USA: 111 Speen Street Framingham, MA 01701-2090 Phone: (508) 875-3030 Fax: (508) 875-1517 Dolphin Europe: Olaf Helsets vei 6 0621 Oslo, Norway Phone: + 47 23 16 70 00 Fax: + 47 23 16 71 80 Internet Information: E-mail: info@dolphinics.com World Wide Web: http://www.dolphinics.com (c) 1999 by Dolphin Interconnect Solutions, Inc. All rights reserved. Specifications subject to change without notice. LinkController is a trademark of Dolphin Interconnect Solutions. All other brand or product names are trademarks or registered trademarks of their respective holders. |
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