Method for implementing electricity-saving mode on optical network unit of passive optical network
An optical network unit and passive optical network technology, applied in the field of passive optical network, can solve the problems of reducing circuit reliability, achieving the lowest power consumption of the circuit, and complicating the circuit design scheme, so as to improve reliability and optimize the design scheme , The effect of reducing the design cost
Active Publication Date: 2011-11-16
SHANGHAI BROADBAND TECH
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Problems solved by technology
[0007] 2. When the control enters POWER DOWN mode, the power consumption of the entire circuit also includes the power consumption of the single-chip microcomputer, so it does not really reach the minimum power consumption of the circuit
[0008] 3. With the addition of a single-chip microcomputer, the circuit board must be expanded accordingly, which complicates the design of the entire circuit
[0009] 4. Due to the increase of components in the circuit, the reliability of the entire circuit is reduced
Method used
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[0032] The present invention will be further described below in conjunction with accompanying drawing.
[0033] Such as image 3 As shown, this embodiment adopts the following scheme:
[0034] 1. The CPU inside the ONU chip accesses the internal registers of the switch chip through MDIO, reads the relevant information in the registers, and obtains information about whether the ONU is connected by a network cable or whether there is data traffic flowing.
[0035] 2. When the ONU is not connected by a network cable or no data traffic flows, the ONU chip will give a high-level and low-level conversion signal to the data signal pin of the D flip-flop (different configurations are performed according to the selected trigger).
[0036] 3. The D flip-flop will output an Enable signal to the DC-DC Converter to enter the POWER DOWN mode, and turn off the 3.3V voltage provided to the ONU chip and the converted 1.8V voltage.
[0037] 4. At this time, the 3.3V voltage supplying power to...
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The present invention relates to a method for realizing power-down mode on optical network units (ONU) of passive optical networks including: an internal CPU of an ONU chip accesses an internal register of an exchange chip via MDIO to read related information in it and get if the ONU is connected with a network line or data flows flow through it, if not, chip ONU sends a switch signal for configuration to the data signal pin of a trigger, which will output an enable signal to a DC-DC converter to turn it to a power down mode and turns off the voltage provided to chip ONU and converted voltage.
Description
technical field [0001] The invention relates to a passive optical network (GEPON), in particular to a method for realizing a power saving mode on an optical network unit of the passive optical network. Background technique [0002] Gigabit Ethernet-based passive optical network (GEPON) is a point-to-multipoint optical network, which means that the signal channel is completed through passive devices from the source to the destination node. It is a point-to-multipoint system composed of OLT (Optical Line Terminal), ONU (Optical Network Unit) and ODN (Optical Distribution Network). Such as figure 1 shown. [0003] Adding the POWER DOWN mode is to consider that some users forget to cut off the power supply when the ONU is not working, which will cause the ONU to be in the power-on state all the time. In this way, one: power resources are wasted and economic losses are brought to users; two: the ONU is always in working condition, which shortens its service life. Therefore, w...
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IPC IPC(8): H04B10/02G06F1/32H04B10/80
Inventor 林清全沈懿朱增喜
Owner SHANGHAI BROADBAND TECH