CN201008161Y

CN201008161Y - Electricity-saving device for optical network unit

Info

Publication number: CN201008161Y
Application number: CNU2006200451651U
Authority: CN
Inventors: 林清全; 沈懿; 朱增喜
Original assignee: Shanghai B Star Co Ltd
Current assignee: Shanghai B-Star Broadband Technology Co., Ltd.
Priority date: 2006-08-25
Filing date: 2006-08-25
Publication date: 2008-01-16
Anticipated expiration: 2016-08-25

Abstract

The utility model relates to an electricity-saving device for a light network unit comprising a chip of the light network unit (OUN), a trigger, a communicating chip and a DC-DC converter, wherein the ONU chip and the communicating chip are respectively interconnected with the trigger, further the ONU chip, the trigger and the communicating chip are respectively connected with the DC-DC converter, the CPU in the ONU chip is connected with the inner register of the communicating chip through management data input/output interfaces (MDIO). Compared with to the conventional technology, the utility model has the advantages of lower costs, smaller power consumption, higher dependability of the circuit.

Description

A kind of electricity saver that is used for optical network unit

Technical field

The utility model relates to EPON (GEPON), particularly relates to a kind of electricity saver that is used for optical network unit.

Background technology

EPON (GEPON) based on gigabit Ethernet is the optical-fiber network of a kind of point to multiple spot, and the passage that refers to signal is all finished by passive device between from the source to the destination node.It is the point-to-multi-point system that is made of OLT (optical line terminal), ONU (optical network unit) and ODN unit such as (Optical Distribution Networks).As shown in Figure 1.

Adding POWER DOWN pattern, is to consider that some user when ONU is idle, forgets and cuts off the electricity supply, and causes ONU to be in the state that powers on always.So, one: wasted electric power resource, brought economic loss to the user; Two: ONU is in running order always, has shortened its useful life.So when ONU does not have netting twine connection or free of data flow to flow through, make it enter POWER DOWN pattern, can save unnecessary power consumption, increase the service life.

Existing technical scheme is to add single-chip microcomputer by the outside to carry out circuit control.As shown in Figure 2, when needs entered Power Down pattern, single-chip microcomputer is given there emerged a the innernal CPU of signal to the ONU chip, and CPU turn-offs the power supply to the inside chip power supply, thereby reaches the effect of power saving.When will enter operate as normal, be there emerged a the innernal CPU of signal by single-chip microcomputer equally to the ONU chip, wake CPU up, CPU will open again to the power supply of inside chip power supply, thereby enter normal mode of operation.

The defective of prior art scheme is as follows:

1, employing adds single-chip microcomputer and controls the sequential that enters POWER DOWN pattern, has improved the design cost of entire circuit.

When 2, control entered POWER DOWN pattern, the power consumption of entire circuit also will comprise the power consumption of single-chip microcomputer, so truly do not reach the lowest power consumption of circuit.

3, add single-chip microcomputer, circuit board certainly will will be done corresponding expansion, makes the design of entire circuit complicated.

4,, reduced the reliability of entire circuit owing to the increase of components and parts in the circuit.

Summary of the invention

The purpose of this utility model is exactly to provide a kind of electricity saver that is used for optical network unit for the defective that overcomes above-mentioned prior art existence.

The purpose of this utility model can be achieved through the following technical solutions: a kind of electricity saver that is used for optical network unit, it is characterized in that, comprise optical network unit (ONU) chip, trigger, exchange chip, DC-DC converter (DC-DC Converter), described ONU chip, exchange chip all interconnect with trigger, described ONU chip, trigger, exchange chip all also are connected with DC-DC Converter, and the CPU in the described ONU chip is connected with the internal register of exchange chip by management data input/output interface (MDIO).

Described ONU chip can be PAS6201 or PAS6001.

Described trigger can be d type flip flop.

Described exchange chip can be Marvell6061.

Particularly, a kind of electricity saver that is used for optical network unit is characterized in that, this device may further comprise the steps the realization of power saving:

A.ONU (optical network unit) chip internal CPU is by the internal register of MDIO (management data input/output interface) visit exchange chip, read the relevant information in the register, obtain the relevant information whether ONU has netting twine to connect or whether have data traffic to flow through;

B. when ONU did not have netting twine connection or free of data flow to flow through, the ONU chip was configured for switching signal of flip-flop data signal pin;

C. can export trigger at this moment an Enable (enabling) signal and make it enter POWER DOWN (power saving) pattern for DC-DC Converter (DC-DC converter), turn-off and give chip voltage that the ONU chip provides and the voltage of changing out;

D. the voltage to exchange chip power supply exists all the time, and when ONU has netting twine to connect to go up or has data traffic flow out-of-date, exchange chip reconfigures for the conversion of signals of a high-low level of data-signal pin of trigger to trigger;

E. can export trigger at this moment an Enable signal and make it enter POWER ON (powering on) pattern for DC-DC Converter, chip voltage is provided for the ONU chip and change out

Changing voltage, thereby the normal operating conditions of entering.

It is the switching signal of a high and low level that described ONU chip is given the switching signal of d type flip flop data-signal pin.

Described chip voltage can be 3.3V voltage.

Described changing voltage can be 1.8V voltage.

Described voltage to the exchange chip power supply can be 3.3V voltage.

Compared with prior art, the utlity model has following advantage:

1. do not adopt to add single-chip microcomputer and control the sequential that enters POWER DOWN pattern, but control the sequential that enters POWER DOWN pattern by d type flip flop being configured at the original exchange chip of circuit.Greatly reduce the design cost of circuit.

2. when control entered POWER DOWN pattern, the power consumption the when power consumption of entire circuit compares with Single-chip Controlling will significantly reduce.Lowest power consumption is about 800mW.

3. need not to add single-chip microcomputer in addition, saved segment space on the circuit board, optimized the design of entire circuit.

4. owing to the minimizing of components and parts in the circuit, improved the reliability of entire circuit.

Description of drawings

Fig. 1 is the structured flowchart of EPON;

Fig. 2 is the schematic diagram of prior art;

Fig. 3 is a schematic block diagram of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 3, a kind of electricity saver that is used for optical network unit, comprise optical network unit (ONU) chip, trigger, exchange chip, DC-DC converter (DC-DC Converter), described ONU chip, exchange chip all interconnect with trigger, described ONU chip, trigger, exchange chip all also are connected with DC-DC Converter, and the CPU in the described ONU chip is connected with the internal register of exchange chip by management data input/output interface (MDIO).

Described ONU chip can be PAS6201 or PAS6001; Described trigger can be d type flip flop; Described exchange chip can be Marvell6061.

Present embodiment adopts following scheme:

1.ONU chip internal CPU reads the relevant information in the register by the internal register of MDIO visit exchange chip, obtains the relevant information whether ONU has netting twine to connect or whether have data traffic to flow through.

2. when ONU did not have netting twine connection or free of data flow to flow through, the ONU chip can be given the switching signal (according to the trigger difference of selecting, carrying out different configurations) of a high and low level of d type flip flop data-signal pin.

Make it enter POWER DOWN pattern for DC-DC Converter 3.D trigger can be exported an Enable signal at this moment, the voltage of 3.3V voltage that provides to the ONU chip and the 1.8V that changes out is provided.

4. exist all the time to the 3.3V voltage of exchange chip power supply this moment.When the ONU netting twine connect to be gone up or have data traffic flow out-of-date, exchange chip can be given the switching signal of a high and low level of data-signal pin of d type flip flop.

Make it enter POWER ON pattern for DC-DC Converter 5.D trigger can be exported an Enable signal at this moment, the voltage of 3.3V voltage that provides to the ONU chip and the 1.8V that changes out is provided, thus the normal operating conditions of entering.

Present embodiment adopts commercial ONU chip (as PAS6201, PAS6001), supports the exchange chip (as Marvell6061) of MLDsnooping function and functionality of vlan, and add that in circuit d type flip flop comes the power unit in the control circuit, when netting twine does not have connection or ONU not to have data traffic to flow through, will be to the dump of ONU chip power supply, thus reach the effect of power saving.

Claims

1. electricity saver that is used for optical network unit, it is characterized in that, comprise optical network unit ONU chip, trigger, exchange chip, dc dc converter DC-DC Converter, described ONU chip, exchange chip all interconnect with trigger, described ONU chip, trigger, exchange chip all also are connected with DC-DC Converter, and the CPU in the described ONU chip is connected with the internal register of exchange chip by management data input/output interface MDIO.

2. a kind of electricity saver that is used for optical network unit according to claim 1 is characterized in that, described ONU chip can be PAS6201 or PAS6001.

3. a kind of electricity saver that is used for optical network unit according to claim 1 is characterized in that described trigger can be d type flip flop.

4. a kind of electricity saver that is used for optical network unit according to claim 1 is characterized in that described exchange chip can be Marvel16061.