Encryption card based on PCI Express bus technology

Abstract

An encipher card based on PCI Express main bus technique comprises DSP major control chip, special cipher computation chip, physical nose source chip, memory, PCI-E interface chip, the said cipher card with main board data interchange based on PCI main bus technique, mainly used for data cipher coding treatment, using PCI-E main bus interface technique to solve previous cipher data high speed treatment, solving current band width issue of cipher product. The cipher card is particularly suitable for video and audio multimedia data cipher treatment, also the main application of this cipher card.

Description

Technical field: [0001] The invention relates to the field of electronic information, in particular to an encryption card based on PCI Express bus technology. Background technique: [0002] The existing encryption card mainly adopts the connection mode of PCI bus. The English full name of PCI is Peripheral Component Interconnect. That is, the external device interconnection bus is a PC local bus standard launched in 1993. PCI bus can be divided into 32-bit bus and 64-bit bus. Generally, PCs use 32-bit PCI bus, and the transmission bandwidth is up to 133MB / s (33MHz×32bit / 8). Servers and advanced workstations have a 64-bit PCI bus. At present, the burst transfer rate of 533MB / s can be achieved under the 64-bit bus width. Due to the shared parallel architecture, many problems on the PCI bus are gradually revealed: IRQ sharing conflicts, only a limited number of 10 sets of devices can be supported to synchronize clock data The transmission is limited by signal distortion, th...

AI Technical Summary

Problems solved by technology

[0004] The application in our country is still in its infancy. It is mainly used in multimedia processing fields such as images that require high bandwidth for data processing. No application has been found in encryption and decryption processing.

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