RapidIO defines a high-performance, packet-switched [276 bytes],
interconnect technology designed for passing data and control information
between microprocessors, DSPs, communication and network processors,
system memory, and peripheral devices.
RapidIO may be used as a chip-to-chip and board-to-board communications
bus. RapidIO may be found as a bus on a single PC card or used as a back
plane interconnect bus. RapidIO uses a full duplex interface with either
an 8-bit or 16-bit [unidirectional] Input and Output at 10Gbps, using
LVDS [Low Voltage Differential
Signaling]. RapidIO payloads are double-word 8-byte aligned big-endian.
RapidIO uses a 16-bit CRC. X16+ X12+
X5+1. Device drivers are Source Terminated, device receivers require a
differentially termination 100 ohm resistor.
RapidFabric is an extension to RapidIO. RapidFabric adds a serial
physical layer, flow control, multicast, protocol
encapsulation/internetworking and high-end traffic-management
capabilities. The RapidFabric extensions may be fully backward compatible
with the RapidIO interface [depending on the extensions used].
RapidIO 2.1 Specification [09/2009]
RapidIO Trade Association [www.rapidio.org]
RapidIO uses LVDS [Low Voltage Differential Signaling],
per the EIA-644 standard.
Altera {FPGA Physical Interfaces, RapidIO IP Cores}
Avago Technologies {8-port, 4x switch fabric IC}
Freescale Semiconductor, Inc. {MPC8540 RapidIO - Enabled Processor IC Manufacturer}
Lattice {RapidIO IP (Serial RapidIO core, physical layer specification}
LSI Corporation {RapidIO IP (Intellectual Property) ASIC Solution}
Mercury Computer Systems, Inc. {RapidIO IP (Intellectual Property) Core, Serial RapidIO 8-Port Switch IC}
Praesum Communications Inc. {RapidIO IP (Intellectual Property) LVDS Physical Layer, Serial Physical Layer}
Xilinx {Virtex FPGA Core, RapidIO Physical Layer Interface}
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