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Data transmission method and receiving apparatus and system

A receiving device and data transmission technology, which is applied in the field of data transmission, can solve the problems of buffer overflow at the receiving end, back pressure information cannot be transmitted in time, etc.

Inactive Publication Date: 2007-08-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above prior art that the prior art uses the flow control frame as the back pressure information. When the receiving end buffer is full and cannot continue to receive data, the flow control frame is sent to the sending end. If the receiving end sends If the interface is sending data frames, the flow control frame must wait until the current data frame is sent before it can be sent out; current technology has the problem that the backpressure information cannot be transmitted to the sending end in time, which may cause buffer overflow at the receiving end

Method used

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  • Data transmission method and receiving apparatus and system

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Embodiment Construction

[0013] The invention provides a data transmission method, a receiving device and a system. The receiving end sends a working clock signal to the sending end, and the sending end sends data to the receiving end according to the working clock signal; when the receiving end detects that the data cannot be received, it sends Fixed level signal, the sender stops sending data to the receiver after receiving the fixed level signal.

[0014] Please refer to FIG. 1 , which is a flowchart of a method in an embodiment of the present invention. The method in the embodiment of the present invention will be described in detail below through the flow chart.

[0015] Step 101. The receiving end detects whether data can be received, if yes, proceed to step 102; otherwise, proceed to step 103.

[0016] The receiving end and sending end mentioned in the present invention are only for the definition of the data output direction corresponding to data sending and data receiving in the communicatio...

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Abstract

The invention discloses one data transmission method, which comprises the following steps: receive end sends work clock signal to send end and the send end sends data according to work clock signal; the said receive end cannot get the data, stopping sending work clock signals. The invention discloses one receive device and its system. The invention realizes one receive end reverse information from send to send ends to control send end data sending.

Description

technical field [0001] The present invention relates to data transmission technology, in particular to a clock signal-based data transmission method, receiving device and system. Background technique [0002] In circuit design, backpressure signals are defined in many interface standards between chips, but backpressure signals are not defined in some interface standards, for example, Media Independent Interface (Media Independent Interface, MII) and gigabit media independent Interface (Gigabit Media Independent Interface, GMII), etc. The back pressure signal is a control signal output from the receiving end to the sending end to indicate whether the sending end can send data. For example, when the internal buffer of the receiving end is full and cannot continue to receive data, set the back pressure signal to an active state, and when the sending end detects that the back pressure signal is in an active state, it stops sending data to the receiving end; When the area is no...

Claims

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Application Information

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IPC IPC(8): H04L7/04H04L1/00
Inventor 涂君
Owner HUAWEI TECH CO LTD