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Programmable IEEE1394 bus monitoring system and monitoring method thereof

A monitoring system and bus technology, applied in the field of programmable IEEE1394 bus controllers, can solve the problem of not mastering the core technology of the IEEE1394 bus bottom layer protocol, and achieve the effect of good portability

Inactive Publication Date: 2010-06-30
NAT SPACE SCI CENT CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, my country does not have an IEEE1394 bus protocol control chip with independent intellectual property rights, and has not mastered the core technology of the underlying protocol of the IEEE1394 bus

Method used

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  • Programmable IEEE1394 bus monitoring system and monitoring method thereof
  • Programmable IEEE1394 bus monitoring system and monitoring method thereof
  • Programmable IEEE1394 bus monitoring system and monitoring method thereof

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Embodiment Construction

[0035] The present invention will be described in detail below with reference to the accompanying drawings.

[0036] Such as figure 1 As shown, the monitoring system of the present invention is composed of 7 parts: control interface, high-speed data interface, control register, CRC check, data transceiver module, data buffer processing module and link layer physical layer interface module.

[0037] The physical layer interface part of the link layer provides the standard interface stipulated by the IEEE1394 bus. All data packets and status information on the bus are forwarded from the physical layer to the monitoring system through this interface. The monitoring chip forwards the data on the bus to the data buffer processing module , update the bus state directly to the corresponding bit of the control register. The data buffer processing module connects the physical layer interface of the link layer and subsequent modules, and is composed of asynchronous FIFO, which plays the...

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Abstract

The invention relates to a programmable IEEE1394 bus monitoring system and a monitoring method thereof. The monitoring system is characterized in that: the monitoring system is designed on the basis of an IEEE1394 bus link layer and serves as a normal node to be connected with an IEEE1394 serial bus by a standard physical layer protocol control chip, and the other end of the monitoring system is connected with a high-speed fist-in-first-out memory / high-speed double-port random memory used for controlling a microprocessor and a data buffer; the monitoring system is used for recording data packets in all types transmitted by the bus and monitoring all bus states; the IEEE1394 bus monitoring system comprises a control interface, a high-speed data interface, a control memory, a cyclic redundancy check module, a data packet receive / transmission module, a data buffer processing module and a link layer physical layer interface; and in the monitoring method, while the data packets are recovered, the link layer physical layer interface monitors the bus state in real time, so that the monitoring and the debugging of the IEEE1394 bus are realized.

Description

technical field [0001] The present invention relates to the category of a programmable IEEE1394 bus controller, in particular to a programmable IEEE1394 bus monitoring system and monitoring method, which can selectively record the IEEE1394 bus data and monitor the working status in real time. Chip design and monitoring methods for the bus. Background technique [0002] The IEEE1394 bus is a commercial bus originally proposed by Apple to provide a high-speed interface for real-time digital data transmission, and it is mainly used in various digital multimedia devices. There are two data transmission modes of the IEEE1394 bus: asynchronous transmission and isochronous transmission. During asynchronous transmission, the sending and receiving nodes need to perform CRC check on the sent and received data. After receiving the data packet, the destination node should send a confirmation data packet to the source node to ensure that the data packet is received correctly; the IEEE13...

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Application Information

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IPC IPC(8): H04L29/06H04L1/00H04L12/56
Inventor 周庆瑞孙辉先陈晓敏曹松
Owner NAT SPACE SCI CENT CAS