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Dual-channel serial RapidIO interface supporting multiple transmission modes

A technology of transmission mode and channel, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of bandwidth waste, lack of flexibility in data transmission, few transmission modes, etc., to achieve a wide range of applications, improve flexibility and transmission bandwidth, structure. simple effect

Inactive Publication Date: 2020-02-11
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] However, in the actual application process of traditional interfaces, in 1x or 2x mode, only one or two of the four LANEs are transmitting data, and the rest of the channels are idle, resulting in a lot of bandwidth waste, and can only achieve one One-to-one interconnection and few transmission modes make data transmission inflexible

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  • Dual-channel serial RapidIO interface supporting multiple transmission modes
  • Dual-channel serial RapidIO interface supporting multiple transmission modes
  • Dual-channel serial RapidIO interface supporting multiple transmission modes

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] The dual-channel serial RapidIO interface supporting multiple transmission modes of the present invention is a dual-channel transmission scheme based on the RapidIO2.0 protocol. On the basis of the characteristics of standard serial RapidIO low delay, high bandwidth and high scalability, One-to-two interconnection of RapidIO devices can be realized, with higher transmission flexibility and bandwidth utilization.

[0037] Such as figure 1 Shown, the dual-path serial RapidIO interface that supports multiple transmission modes of the present invention, it comprises:

[0038] The controller is responsible for exchanging data with the system, generating request packets and processing response packets. The channel used for data transmission can be selected through the PortID field in the software programming register; according to t...

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Abstract

A dual-channel serial RapidIO interface supporting multiple transmission modes comprises a controller used for performing data exchange with the interior of a system, generating a request packet and aprocessing response packet, and selecting a channel used for data transmission; a logic layer and transmission layer circuit used for taking charge of tasks such as packet format conversion and packet caching and sending an input request to the controller; a physical protocol layer responsible for CRC (cyclic redundancy check), idle sequence generation, transmission flow control and error management; a PCS layer used for carrying out synchronization and 8B / 10B decoding on the received data on each LANE; a SerDes unit used for carrying out data conversion between the parallel code block of the PCS layer and the link serial code stream and completing the function of PMA layer definition in the RapidIO protocol; and a crossbar switch positioned between the PCS layer and the SerDes, and used for interconnecting channels of the PCS layer and the SerDes according to the channel mode. The invention has the advantages of simple structure, capability of improving interconnection flexibility and transmission bandwidth and the like.

Description

technical field [0001] The invention mainly relates to the technical field of embedded on-chip high-speed interconnection, in particular to a dual-channel serial RapidIO interface supporting multiple transmission modes. Background technique [0002] Most of the existing serial RapidIO interfaces strictly comply with the RapidIO standard. Four links are composed of four pairs of full-duplex differential signal lines. Each link is called a LANE. According to different transmission modes, several LANEs form a link. transmission path. [0003] According to the RapidIO2.0 protocol, RapidIO supports a total of 3 transmission modes (1x, 2x, 4x), 5 transmission rates (1.25Gbps, 2.5Gbps, 3.125Gbps, 5Gbps, 6.25Gbps), the combination of different transmission modes and different transmission rates 15 transmission bandwidths can be generated. [0004] However, in the actual application process of traditional interfaces, in 1x or 2x mode, only one or two of the four LANEs are transmitt...

Claims

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Application Information

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IPC IPC(8): G06F13/38
CPCG06F13/382
Inventor 郭阳郭欣童雷元武鲁建壮刘畅
Owner NAT UNIV OF DEFENSE TECH
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