CN101741599A - Network transmission device and power-saving method thereof - Google Patents
Network transmission device and power-saving method thereof Download PDFInfo
- Publication number
- CN101741599A CN101741599A CN200810181270A CN200810181270A CN101741599A CN 101741599 A CN101741599 A CN 101741599A CN 200810181270 A CN200810181270 A CN 200810181270A CN 200810181270 A CN200810181270 A CN 200810181270A CN 101741599 A CN101741599 A CN 101741599A
- Authority
- CN
- China
- Prior art keywords
- voltage
- control signal
- produce
- sent
- transmission device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Dc Digital Transmission (AREA)
Abstract
The invention discloses a network transmission device and a power saving method thereof. The network transmission device comprises a chip, a transformer and a power supply adjusting unit. The chip comprises a detection and control unit, a simulation circuit and a digital circuit. The detection and control unit receives an accepting signal and detects the accepting signal and the state of the chip so as to generate a first control signal. The transformer has a primary side and a secondary side and the primary side of the transformer is coupled to the chip. The power supply adjusting unit is coupled to the detection and control unit and a centre tap of the primary side of the transformer for receiving the voltage and generating a first adjusting voltage according to the first control signal, and the first adjusting voltage is connected to one of the centre tap of the primary side of the transformer, the simulation circuit and the digital circuit.
Description
Technical field
The invention relates to a kind of network transmission device, and particularly relevant for a kind of network transmission device and its electricity saving method that is applied to network transmission device.
Background technology
Because the prosperity of electronics technology, computer and various information digitalization equipment are universal day by day, and in order to reach the purpose of resource-sharing, network is necessity configuration that becomes information exchange.In various network configuration, because Ethernet (Ethernet) has characteristics such as obtain easily, set up convenient and transmission speed is fast, make that the relevant equipment of Ethernet is flourish, its transmission rate also by 10Mbps evolution to 100Mbps even 1000Mbps.
In the network transmission device of Ethernet, existing network speed can be divided into 10M, 100M and 1000M.And in the transmission course of network signal, whenever network transfer speeds not simultaneously, the transmission voltage of network transmission device is also inequality.For instance, when network transfer speeds during at 10Mbps, the transmission voltage of network transmission device for example is about 2.5 volts (V); When network speed during at 100Mbps, the transmission voltage of network transmission device for example is about ± 1 volt (V); When network transfer speeds during at 1000Mbps, the transmission voltage of network transmission device for example is about ± 1 volt (V) with receive voltage and for example be about ± 1 volt (V) in short-term (shorter cable length) time, and maximum voltage can reach and is about ± 2 volts (V).
Yet, network transmission device is not all to maintain identical network transfer speeds when carrying out transfer of data always, in order to keep the normal operation of network transmission device, that is allow network transmission device can under heterogeneous networks speed, carry out transfer of data, maximum voltage value among 3 (network transfer speeds 10Mbps, 100Mbps, the 1000Mbps) then must be provided, also be 2.5 volts.Thus, will cause the too much electric weight of network transmission device consumption.
Summary of the invention
The invention provides a kind of network transmission device and its electricity saving method, use and reach purpose of power saving.
The present invention proposes a kind of network transmission device, comprises chip, transformer and power supply adjustment unit.Chip comprises detection and control unit, analog circuit and digital circuit.Detect and control unit in order to receiving a received signal, and detect the state of received signal and chip, and produce first control signal.Transformer has primary side and secondary side, and the primary side of this transformer is coupled to chip.The power supply adjustment unit is coupled to the centre cap of the primary side of detection and control unit and transformer, in order to receive voltage, and according to first control signal, adjust voltage and produce first, and with first adjust voltage be sent to the primary side of transformer centre cap, analog circuit and digital circuit one of them.
In an embodiment of the present invention, above-mentioned detection and control unit detect received signal to have the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produces first control signal, and the first adjustment voltage that the power supply adjustment unit is produced then is sent to the centre cap of the primary side of transformer.
In an embodiment of the present invention, above-mentioned detection and control unit detect received signal to have the information of signal noise ratio and produces first control signal, and the first adjustment voltage that the power supply adjustment unit is produced then is sent to analog circuit.
In an embodiment of the present invention, above-mentioned detection and control unit detect chip internal latency size and produce first control signal, what the power supply adjustment unit was produced first adjusts voltage and then is sent to digital circuit.
In an embodiment of the present invention, above-mentioned detection and control unit also detect received signal and corresponding second control signal that produces, and the power supply adjustment unit is also according to second control signal, adjust voltage and produce second, and with first adjust centre cap, analog circuit and digital circuit that voltage and the second adjustment voltage is sent to the primary side of transformer respectively wherein two.
In an embodiment of the present invention, above-mentioned detection and control unit detect received signal to have the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produces this first control signal, what then the power supply adjustment unit was produced first adjusts the centre cap that voltage is sent to the primary side of transformer, and detect and control unit detects received signal and has the information of signal noise ratio and produce this second control signal, what then the power supply adjustment unit was produced second adjusts voltage and is sent to analog circuit.
In an embodiment of the present invention, above-mentioned detection and control unit detect chip internal latency size and produce first control signal, what then the power supply adjustment unit was produced first adjusts voltage and is sent to digital circuit, and detect and control unit detects received signal and has the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produce second control signal, what then the power supply adjustment unit was produced second adjusts the centre cap that voltage is sent to the primary side of transformer.
In an embodiment of the present invention, above-mentioned detection and control unit detect chip internal latency size and produce first control signal, what then the power supply adjustment unit was produced first adjusts voltage and is sent to digital circuit, and detect and control unit detects received signal and has the information of signal noise ratio and produce second control signal, what then the power supply adjustment unit was produced second adjusts voltage and is sent to analog circuit.
In an embodiment of the present invention, above-mentioned detecting unit detects received signal and when producing first control signal, detection and control unit also detect the state of this chip and produce the 3rd control signal, and the power supply adjustment unit is also according to the 3rd control signal, adjust voltage and produce the 3rd, and adjust centre cap, analog circuit and the digital circuit that voltage, the second adjustment voltage and the 3rd adjustment voltage are sent to the primary side of transformer respectively first.
In an embodiment of the present invention, above-mentioned detection control unit detects received signal and has network transfer speeds, the DC level drift, transmit the information of amplitude and length of transmission line and produce first control signal, what then the power supply adjustment unit was produced first adjusts the centre cap that voltage is sent to the primary side of transformer, and detection and control unit detect received signal to have the information of signal noise ratio and produces second control signal, what then the power supply adjustment unit was produced second adjusts voltage and is sent to analog circuit, and detect and control unit detect chip internal latency size and produce the 3rd control signal, what then the power supply adjustment unit was produced the 3rd adjusts voltage and is sent to digital circuit.
In an embodiment of the present invention, above-mentioned network transmission device also comprises first resistance and second resistance.First end of first resistance is coupled to first end of the primary side of transformer.First end of second resistance is coupled to second end of first resistance, and second end of second resistance is coupled to second end of the primary side of transformer.
In an embodiment of the present invention, above-mentioned voltage is operating voltage.
The present invention proposes a kind of electricity saving method of network transmission device, and this network transmission device has chip and transformer, and chip has analog circuit and digital circuit.Above-mentioned electricity saving method comprises the following steps.At first, receive received signal.Afterwards, detect the state of received signal or chip, and produce first control signal.Then, according to first control signal, adjust voltage and produce first accordingly.Afterwards, with first adjust voltage be sent to the primary side of transformer centre cap, this analog circuit and this digital circuit one of them.
In an embodiment of the present invention, above-mentionedly detect the information that received signal has network transfer speeds, DC level drift, transmission amplitude and length of transmission line, then first adjust the centre cap that voltage is sent to the primary side of transformer.
In an embodiment of the present invention, above-mentionedly detect the information that received signal has signal noise ratio, then first adjust voltage and be sent to analog circuit.
In an embodiment of the present invention, the above-mentioned size that detects the internal latency of chip, then the first adjustment voltage is sent to digital circuit.
In an embodiment of the present invention, the electricity saving method of above-mentioned network transmission device also comprises the following steps.At first, detect received signal, and produce second control signal.According to second control signal, adjust voltage and produce second accordingly.With first adjust centre cap, analog circuit and digital circuit that voltage and the second adjustment voltage is sent to the primary side of transformer respectively wherein two.
In an embodiment of the present invention, above-mentioned when detecting received signal and having the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line, produce first control signal and first and adjust the centre cap that voltage is sent to the primary side of transformer, and received signal is when having the information of signal noise ratio, produces second control signal and second and adjusts voltage and be sent to analog circuit.
In an embodiment of the present invention, during the above-mentioned internal latency that detects chip big or small, producing first control signal and first adjusts voltage and is sent to digital circuit, have network transfer speeds, DC level drift, when transmitting the information of amplitude and length of transmission line, produce second control signal and second and adjust the centre cap that voltage is sent to the primary side of transformer and detect received signal.
In an embodiment of the present invention, during the above-mentioned internal latency that detects chip big or small, producing first control signal and first adjusts voltage and is sent to digital circuit, and when detecting received signal and having the information of signal noise ratio, produce second control signal and second and adjust voltage and be sent to analog circuit.
In an embodiment of the present invention, above-mentioned detection received signal and produce first control signal, and above-mentioned electricity saving method also comprises the following steps.At first, the state of detection chip, and produce the 3rd control signal.According to the 3rd control signal, adjust voltage and produce the 3rd accordingly.Adjust centre cap, analog circuit and the digital circuit that voltage, the second adjustment voltage and the 3rd adjustment voltage are sent to the primary side of transformer respectively with first.
In an embodiment of the present invention, above-mentioned when detecting received signal and having the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line, produce first control signal and first and adjust the centre cap that voltage is sent to the primary side of transformer, and when detecting received signal and having the information of signal noise ratio, producing second control signal and second adjusts voltage and is sent to analog circuit, when detecting internal latency big or small of chip, produce the 3rd control signal and the 3rd and adjust voltage and be sent to digital circuit.
The present invention is by detecting and control unit detects the state (size of the internal latency of chip) of the information that had in the received signal (that is signal noise ratio of network transfer speeds and DC level drift, received signal) and chip, and produces first control signal, second control signal and the 3rd control signal accordingly.Afterwards, the power supply adjustment unit is according to first control signal, second control signal and the 3rd control signal, adjust voltage, the second adjustment voltage and the 3rd adjustment voltage and produce first, and the first adjustment voltage, second is adjusted voltage and the 3rd adjust centre cap, analog circuit and the digital circuit that voltage is sent to the primary side of transformer respectively.Thus, the present invention can pass through the dynamically voltage swing of centre cap, analog circuit and the digital circuit of the primary side of adjustment transformer, and then reaches the power consumption of saving network transmission device.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 illustrates the circuit block diagram into the network transmission device of one embodiment of the invention.
Fig. 2 illustrates the electricity saving method flow chart into the network transmission device of one embodiment of the invention.
Fig. 3 illustrates the electricity saving method flow chart into the network transmission device of another embodiment of the present invention.
Fig. 4 illustrates the electricity saving method flow chart into the network transmission device of further embodiment of this invention.
[main element label declaration]
100: network transmission device
110: chip
111: detect and control unit
112: analog circuit
113: digital circuit
120: transformer
130: the power supply adjustment unit
R1, R2: resistance
RS: received signal
CS1: first control signal
CS2: second control signal
CS3: the 3rd control signal
RV1: first adjusts voltage
RV2: second adjusts voltage
RV3: the 3rd adjusts voltage
V1: voltage
S201～S204: each step of the electricity saving method of the network transmission device of one embodiment of the invention
S301～S304: each step of the electricity saving method of the network transmission device of another embodiment of the present invention
S401～S404: each step of the electricity saving method of the network transmission device of further embodiment of this invention
Embodiment
Fig. 1 illustrates the circuit block diagram into the network transmission device of one embodiment of the invention.The network transmission device 100 that present embodiment provided can be applied on the Gigabit Ethernet network (Gigabit Ethernet), but does not limit its scope.Please refer to Fig. 1, network transmission device 100 comprises chip 110, transformer 120 and power supply adjustment unit 130.
In general, network transfer speeds can be divided into 10Mbps, 100Mbps and 1000Mbps in the existing network transmission device 100.Whenever network transfer speeds not simultaneously, the operating voltage of network transmission device 100 also is not quite similar.For example, when network transfer speeds during at 10Mbps, the transmission voltage of network transmission device 100 for example is about 2.5 volts (V), when network transfer speeds during at 100Mbps, the transmission voltage of network transmission device 100 for example is about ± 1 volt (V), when network transfer speeds during at 1000Mbps, the transmission voltage of network transmission device 100 for example is about ± 1 volt (V), and receive voltage and for example be about ± 1 volt (V) and maximum can reach and be about ± 2 volts (V).
In addition, because network transmission device is after receiving received signal RS, may be because the direct current loss of transformer 120, thereby cause received signal RS to produce the phenomenon of DC level drift, and then make the direct voltage among the received signal RS produce the phenomenon of decay.In the network transmission device 100, the performance (Performance) of the transmission amplitude of received signal RS quality also can be used as the foundation of adjusting the first adjustment voltage RV1.And length of transmission line can be judged by the size of received signal RS amplitude, that is length of transmission line may can reduce amplitude of transmission signal and non-any sacrifice in performance more in short-term.
Therefore, when detecting and control unit 111 when receiving received signal RS, just can detect the information that received signal RS has the length of network transfer speeds, DC level drift, transmission amplitude and transmission line, to produce the first control signal CS1, adjust the voltage V1 that it received as power supply adjustment unit 130, to produce the foundation of the first adjustment voltage RV1.
For instance, when detecting and control unit 111 when detecting network transfer speeds and being 10Mbps, and calculate DC level drift value and detected transmission amplitude and length of transmission line under this state, and then produce the first control signal CS1_1.When detecting and control unit 111 when detecting network transfer speeds and being 100Mbps, and calculate DC level drift value and detected transmission amplitude and length of transmission line under this state, and then produce the first control signal CS1_2.When detecting and control unit 111 when detecting network transfer speeds and being 1000Mbps, and calculate DC level drift value and detected transmission amplitude and length of transmission line under this state, and then produce the first control signal CS1_3.In the present embodiment, when network transfer speeds is 10Mbps, do not have the phenomenon of DC level drift among the received signal RS, so DC level drift value is zero.
In addition, detect and control unit 111 is the signal noise ratio that detects received signal RS (Signal-to-Noise Rate, information SNR), and produce the second control signal CS2.For instance, when detecting and control unit 111 detects the signal noise ratio of received signal RS when higher, then produce the second control signal CS2_1, so that the voltage V1 that it received is turned down, to produce the foundation of the second adjustment voltage RV2_1 as power supply adjustment unit 130.And, then produce the second control signal CS2_2 when detecting and control unit 111 detects the signal noise of received signal RS when relatively lower, so that the voltage V1 that it received is heightened, to produce second foundation of adjusting voltage RV2_2 as power supply adjustment unit 130.In the present embodiment, the second adjustment voltage RV2_1 and RV2_2 can be simulation (Analog) voltage.
In addition, detection and control unit 111 are the states according to chip 110, that is the size of the internal latency of chip 110, and produce the 3rd control signal CS3.For instance, for instance, when detecting and control unit 111 detects the internal latency of chip 110 when big, then produce the second control signal CS3_1, and power supply adjustment unit 130 is heightened the voltage V1 that it received, as the foundation that produces the second adjustment voltage RV3_1.And when detect and internal latency that control unit 111 detects chip 110 hour, then produce the second control signal CS3_2, and power supply adjustment unit 130 is turned down the voltage V1 that it received, as to produce second foundation of adjusting voltage RV3_2.In the present embodiment, the 3rd adjustment voltage RV3_1 and RV3_2 can be numeral (Digital) voltage.
In the present embodiment, the mode of the internal latency of detection chip 1105 is to dispose counter (Counter) A and counter B in detection and control unit 111, wherein counter A is for example for having the counter of fixed frequency (Fixed Clock), and the frequency of counter B is for example provided by circular type shaker (RingOscillator), and the frequency size can change.Therefore, after chip 110 came into operation, counting meter A and B can count simultaneously, and added up the count value that start-stop counter A and B have counted in each cycle.When the count value of counter A count value, represent that then the internal latency of chip 110 is bigger greater than counter B.If the count value of counter A, represents then that the internal latency of chip 110 is less less than the count value of counter B.
Please continue with reference to Fig. 1, transformer 120 has primary side and secondary side, and the primary side of transformer 120 is coupled to detection and control unit 110.Power supply adjustment unit 130 is coupled to and detects and control unit 111 and transformer 120, in order to receive voltage (for example is operating voltage, and be 3.3V) V1, and according to the first control signal CS1, the second control signal CS2 and the 3rd control signal CS3, adjust voltage RV1, the second adjustment voltage RV2 and the 3rd adjustment voltage RV3 and produce first, and adjust voltage RV1, the second adjustment voltage RV2 and the 3rd with first and adjust centre cap (Center Tap), analog circuit 112 and the digital circuit 113 that voltage RV3 is sent to the primary side of transformer 120 respectively.
For instance, power supply adjustment unit 130 foundations transmission speed are at that time produced the first control signal CS1 by 10Mbps, 100Mbps or 1000Mbps, produce first again and adjust the centre cap that voltage RV1 is connected to the primary side of transformer 120.So, allow the centre tapped voltage of primary side of voltage device 120 keep minimum and can keep the normal operation of network transmission device.By this, can reduce the power consumption of network transmission device effectively.
Below, to lift an example illustrates how at heterogeneous networks transmission speed (10Mbps, 100Mbps, 1000Mbps), and, select the centre tapped minimum voltage Vct of the primary side of transformer 120 according to network transfer speeds, transmission voltage, length of transmission line and DC level drift.
When network transfer speeds was 10Mbps, the account form of minimum voltage Vct was " the minimum operating voltage of Vct-transmission voltage/2 〉=chip internal ".Suppose that transmission voltage is 2.5V, and the minimum operating voltage in the inside of transformer 120 is 0.6V.Therefore, Vct-2.5/2 〉=0.6, then Vct 〉=1.85V.
When network transfer speeds was 100Mbps, the account form of minimum voltage Vct was " a Vct-transmission voltage/2-DC level drift/minimum operating voltage of 2 〉=chip internal ".Suppose that transmission voltage is 1V, and the minimum operating voltage in the inside of transformer 120 is 0.6V.Therefore, Vct-1/2-DC level drift/2 〉=0.6, then Vct 〉=1.1+ DC level drift/2.In this hypothesis DC level drift value＜0.8, therefore, Vct=1.1～1.5V.
When network transfer speeds was 1000Mbps, the account form of minimum voltage Vct was " Vct-transmission voltage/2-receives voltage/2-DC level drift/minimum operating voltage of 2 〉=chip internal ".The minimum operating voltage in inside of supposing transformer 120 is 0.6V, and transmission line is when being short-term, and transmission voltage can be reduced to 0.8V, reception voltage is 1V, and transmission line is during for long line, and then transmission voltage is 1V, and reception voltage is 0.8V.In this hypothesis DC level drift value＜0.6, and bring the aforementioned calculation mode into, can obtain Vct=1.5～1.8V.
In addition, after power supply adjustment unit 130 receives the second control signal CS2_1 (signal noise ratio of received signal RS is higher), can produce second and adjust voltage RV2_1 (voltage that also is about to analog circuit 112 is turned down), and be sent to the analog circuit 112 in the chip 110.After power supply adjustment unit 130 receives the second control signal CS2_2 (signal noise of received signal RS is lower), can produce second and adjust voltage RV2_2 (voltage that also is about to analog circuit 112 is heightened), and be sent to the analog circuit 112 in the chip 110.By this, can reduce the power consumption of network transmission device effectively.
In addition, after power supply adjustment unit 130 receives the 3rd control signal CS3_1 (internal latency of chip 110 is less), can produce the 3rd and adjust voltage RV2_1 (voltage that also is about to digital circuit 113 is turned down), and be sent to the digital circuit 113 in the chip 110.After power supply adjustment unit 130 receives the 3rd control signal CS3_2 (internal latency of chip 110 is bigger), can produce the 3rd and adjust voltage RV3_2 (voltage that also is about to digital circuit 113 is heightened), and be sent to the digital circuit 113 in the chip 110.
Please continue with reference to Fig. 1, network transmission device 100 still comprises resistance R 1 and R2.First end of resistance R 1 is coupled to first end of the primary side of transformer 120.First end of resistance R 2 is coupled to second end of resistance R 1, and second end of resistance R 2 is coupled to second end of the primary side of transformer 120.In the present embodiment, resistance R 1 for example is 50 ohm (Ω) with the resistance value of R2, but does not limit its scope.
What deserves to be mentioned is, the foregoing description is to produce the first control signal CS1, the second control signal CS2 and the 3rd control signal simultaneously with detection and control unit 111, produce first respectively and adjust voltage RV1, the second adjustment voltage RV2 or the 3rd adjustment voltage RV3, allow network transmission device 100 reach less electricity consumption.But the invention is not restricted to produce simultaneously the first control signal CS1, the second control signal CS2 and the 3rd control signal CS3, also can utilize detection and control unit 111 according to the network transfer speeds among the received signal RS, DC level drift, transmission amplitude and length of transmission line, produce control signal and adjust the size of the centre tapped adjustment voltage of the primary side that is sent to transformer 120, to save the power consumption of network transmission device.Again or, detect and control unit 110 can produce the size that control signal is adjusted the adjustment voltage of the analog circuit 112 that is sent to chip 110 according to the signal noise ratio of received signal RS, to save the power consumption of network transmission device.Also or, detect and the size of the internal latency that control unit 110 can detection chip 110, produce the size that control signal is adjusted the adjustment voltage of the digital circuit 113 that is sent in the chip 110, to save the power consumption of network transmission device.
By the explanation of the foregoing description, can summarize a kind of electricity saving method of network transmission device.Fig. 2 illustrates the electricity saving method flow chart into the network transmission device of one embodiment of the invention.The network transmission device of present embodiment has detection and control unit chip and transformer, and chip has analog circuit and digital circuit.Please refer to Fig. 2, at first, in step S201, receive received signal.For example receive this received signal via detection and control unit.In step S202,, and produce first control signal according to the state that detects received signal or chip.In the present embodiment, detection and control unit detect the information that received signal has network transfer speeds, DC level drift, transmission amplitude and length of transmission line, can produce first control signal in view of the above.Again or, detect and the control unit received signal has the information of signal noise ratio, can produce first control signal in view of the above.Also or, detect and control unit detects the size of the internal latency of chip, can produce first control signal in view of the above.
In step S203,, adjust voltage and produce first accordingly according to first control signal.In step S204, with first adjust voltage be sent to the primary side of transformer centre cap, analog circuit and digital circuit one of them.In the present embodiment, if first to adjust voltage be to have the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produce according to received signal, then this first is adjusted the centre cap that voltage is sent to the primary side of transformer.And if first to adjust voltage be to have signal noise ratio and produce according to received signal, then this first adjusted voltage and be sent to analog circuit.Again or, first to adjust voltage be to produce according to the size of the internal latency of chip, then this first adjusted the digital circuit that voltage is sent to chip.Thus, can be sent to the voltage swing of centre cap, analog circuit or the digital circuit of the primary side of transformer, to reduce the power consumption of network transmission device by dynamic adjustment.
Fig. 3 illustrates the electricity saving method flow chart into the network transmission device of another embodiment of the present invention.Please refer to Fig. 3.At first, in step S301, receive received signal.For example receive this received signal via detection and control unit.In step S302, detect the state of received signal or chip, and produce first control signal and second control signal.In the present embodiment, first control signal is by detecting and control unit detects the information that received signal has network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produces, and second control signal is by detecting and control unit detects the information that received signal has signal noise ratio and produces.Or, first control signal is to produce by the size that detects and control unit detects the internal latency of this chip, and second control signal is by detecting and control unit detects the information that received signal has network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produces.Again or, first control signal is by detecting and the size of the internal latency of control unit detection chip produces, second control signal is by detecting and control unit detects the information that this received signal has signal noise ratio and produces.
In step S303,, adjust the voltage and the second adjustment voltage and produce first accordingly according to first control signal and second control signal.In step S304, with first adjust centre cap, analog circuit and digital circuit that voltage and the second adjustment voltage is sent to the primary side of transformer respectively wherein two.Centre cap, analog circuit and digital circuit by adjusting the primary side be sent to transformer simultaneously two voltage swing wherein is to reduce the power consumption of network transmission device effectively.
Fig. 4 illustrates the electricity saving method flow chart into the network transmission device of another embodiment of the present invention.Please refer to Fig. 4.At first, in step S401, receive received signal.For example receive this received signal via detection and control unit.In step S402, detect the state of received signal or chip, and produce first control signal, second control signal and the 3rd control signal.In the present embodiment, first control signal is to produce according to the information that has network transfer speeds, DC level drift, transmission amplitude and length of transmission line by detection and control unit detection received signal, second control signal is according to by detecting and control unit detects the information that received signal has signal noise ratio and produces, and the 3rd control signal is according to by detecting and the size of the internal latency that the control unit detection chip has produces.
In step S403,, adjust voltage, the second adjustment voltage and the 3rd adjustment voltage and produce first accordingly according to first control signal, second control signal and the 3rd control signal.In step S404, adjust centre cap, analog circuit and the digital circuit that voltage, the second adjustment voltage and the 3rd adjustment voltage are sent to the primary side of transformer respectively with first.By adjusting the voltage swing of centre cap, analog circuit and the digital circuit of the primary side that is sent to transformer simultaneously, to reduce the power consumption of network transmission device effectively.
In sum, the present invention is by detecting and control unit detects the information (signal noise ratio of network transfer speeds and DC level drift, received signal) that had in the received signal and the state (size of the internal latency of chip) of chip, and produces first control signal, second control signal and the 3rd control signal accordingly.Afterwards, the power supply adjustment unit is according to first control signal, second control signal and the 3rd control signal, adjust voltage, the second adjustment voltage and the 3rd control voltage and produce first, and adjust centre cap, analog circuit and the digital circuit that voltage, the second adjustment voltage and the 3rd control signal are sent to the primary side of transformer respectively first.Thus, the present invention can pass through the dynamically voltage swing of centre cap, analog circuit and the digital circuit of the primary side of adjustment transformer, so that save the power consumption of network transmission device.
Though the present invention discloses as above with embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (22)
1. network transmission device comprises:
Chip comprises:
Detect and control unit, in order to receiving a received signal, and detect the state of this received signal or this chip, and produce first control signal;
Analog circuit; And
Digital circuit;
Transformer has primary side and secondary side, and this primary side is coupled to this chip; And
The power supply adjustment unit, be coupled to the centre cap of this primary side of this detection and control unit and this transformer, in order to receive voltage, and according to this first control signal, adjust voltage and produce first, and with this first adjust voltage be sent to this primary side of this transformer centre cap, this analog circuit and this digital circuit one of them.
2. network transmission device according to claim 1, wherein detect and control unit detects this received signal and has the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line and produce this first control signal, this power supply adjustment unit produced this first adjust the centre cap that voltage then is sent to this primary side of this transformer.
3. network transmission device according to claim 1, wherein detect and control unit detects this received signal and has the information of signal noise ratio and produce this first control signal, this power supply adjustment unit produced this first adjust voltage and then be sent to this analog circuit.
4. network transmission device according to claim 1, wherein detect and control unit detect this chip internal latency size and produce this first control signal, this power supply adjustment unit produced this first adjust voltage and then be sent to this digital circuit.
5. network transmission device according to claim 1, wherein this detection and control unit also detect this received signal and produce second control signal, and this power supply adjustment unit is also according to this second control signal, adjust voltage and produce second, and with this first adjust centre cap, this analog circuit and this digital circuit that voltage and this second adjustment voltage is sent to this primary side of this transformer respectively wherein two.
6. network transmission device according to claim 5, wherein this detection and control unit detect this received signal and have network transfer speeds, the DC level drift, transmit the information of amplitude and length of transmission line and produce this first control signal, then this power supply adjustment unit produced this first adjust the centre cap that voltage is sent to this primary side of this transformer, and this detection and control unit detect this received signal and have the information of signal noise ratio and produce this second control signal, then this power supply adjustment unit produced this second adjust voltage and be sent to this analog circuit.
7. network transmission device according to claim 5, wherein this detection and control unit detect this chip internal latency size and produce this first control signal, then this power supply adjustment unit produced this first adjust voltage and be sent to this digital circuit, and detecting this received signal, this detection and control unit have network transfer speeds, the DC level drift, the information of transmission amplitude and length of transmission line and produce this second control signal, then this power supply adjustment unit produced this second adjust the centre cap that voltage is sent to this primary side of this transformer.
8. network transmission device according to claim 5, wherein this detection and control unit detect this chip internal latency size and produce this first control signal, then this power supply adjustment unit produced this first adjust voltage and be sent to this digital circuit, and this detection and control unit detect this received signal and have the information of signal noise ratio and produce this second control signal, then this power supply adjustment unit produced this second adjust voltage and be sent to this analog circuit.
9. network transmission device according to claim 5, wherein this detecting unit detects this received signal and when producing this first control signal, this detection and control unit also detect the state of this chip and produce the 3rd control signal, and this power supply adjustment unit is also according to the 3rd control signal, adjust voltage and produce the 3rd, and this first adjustment voltage, this second adjustment voltage and the 3rd are adjusted centre cap, this analog circuit and this digital circuit that voltage is sent to this primary side of this transformer respectively.
10. network transmission device according to claim 9, wherein this detection control unit detects this received signal and has network transfer speeds, the DC level drift, transmit the information of amplitude and length of transmission line and produce this first control signal, then this power supply adjustment unit produced this first adjust the centre cap that voltage is sent to this primary side of this transformer, this detection and control unit detect this received signal to have the information of signal noise ratio and produces second control signal, then this power supply adjustment unit produced this second adjust voltage and be sent to this analog circuit, this detection and control unit detect this chip internal latency size and produce the 3rd control signal, what then this power supply adjustment unit was produced the 3rd adjusts voltage and is sent to this digital circuit.
11. network transmission device according to claim 1 also comprises:
First resistance, its first end is coupled to first end of this primary side of this transformer; And
Second resistance, its first end is coupled to second end of this first resistance, and its second end is coupled to second end of this primary side of this transformer.
12. network transmission device according to claim 1, wherein this voltage is operating voltage.
13. the electricity saving method of a network transmission device, and this network transmission device has chip and transformer, and this chip has analog circuit and digital circuit, and this electricity saving method comprises the following steps:
Receive a received signal;
Detect the state of this received signal or this chip, and produce first control signal;
According to this first control signal, adjust voltage and produce first accordingly; And
With this adjustment voltage be sent to the primary side of this transformer centre cap, this analog circuit and this digital circuit one of them.
14. the electricity saving method of network transmission device according to claim 13, wherein detect the information that this received signal has network transfer speeds, DC level drift, transmission amplitude and length of transmission line, then this first adjustment voltage is sent to the centre cap of the primary side of this transformer.
15. the electricity saving method of network transmission device according to claim 13 wherein detects the information that this received signal has signal noise ratio, then this first adjustment voltage is sent to this analog circuit.
16. the electricity saving method of network transmission device according to claim 13 wherein detects the size of the internal latency of this chip, then this first is adjusted voltage and is sent to this digital circuit.
17. the electricity saving method of network transmission device according to claim 13 also comprises:
Detect this received signal, and produce second control signal;
According to this second control signal, adjust voltage and produce second accordingly; And
With this first adjust centre cap, this analog circuit and this digital circuit that voltage and this second adjustment voltage is sent to the primary side of this transformer respectively wherein two.
18. the electricity saving method of network transmission device according to claim 17, when wherein detecting this received signal and having the information of network transfer speeds, DC level drift, transmission amplitude and length of transmission line, produce the centre cap that this first control signal and this first adjustment voltage are sent to the primary side of this transformer, and during the information when detecting this received signal and having signal noise ratio, produce this second control signal, and this second adjustment voltage is sent to this analog circuit.
19. the electricity saving method of network transmission device according to claim 17, when wherein detecting internal latency big or small of this chip, producing this first control signal and this first adjusts voltage and is sent to this digital circuit, have network transfer speeds, DC level drift, when transmitting the information of amplitude and length of transmission line, produce the centre cap that this second control signal and this second adjustment voltage are sent to the primary side of this transformer and detect this received signal.
20. the electricity saving method of network transmission device according to claim 17, when wherein detecting internal latency big or small of this chip, producing this first control signal and this first adjusts voltage and is sent to this digital circuit, and when detecting this received signal and having the information of signal noise ratio, produce this second control signal and this second and adjust voltage and be sent to this analog circuit.
21. the electricity saving method of network transmission device according to claim 17, this received signal of this detection and produce this first control signal wherein, this electricity saving method also comprises:
Detect the state of this chip, and produce the 3rd control signal;
According to the 3rd control signal, adjust voltage and produce the 3rd accordingly; And
This first adjustment voltage, this second adjustment voltage and the 3rd are adjusted centre cap, this analog circuit and this digital circuit that voltage is sent to the primary side of this transformer respectively.
22. the electricity saving method of network transmission device according to claim 21, wherein detect this received signal and have network transfer speeds, the DC level drift, when transmitting the information of amplitude and length of transmission line, produce the centre cap that this first control signal and this first adjustment voltage are sent to the primary side of this transformer, and when detecting this received signal and having the information of signal noise ratio, producing this second control signal and this second adjusts voltage and is sent to this analog circuit, when detecting internal latency big or small of this chip, produce the 3rd control signal and the 3rd and adjust voltage and be sent to this digital circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101812701A CN101741599B (en) | 2008-11-18 | 2008-11-18 | Network transmission device and power-saving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101812701A CN101741599B (en) | 2008-11-18 | 2008-11-18 | Network transmission device and power-saving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101741599A true CN101741599A (en) | 2010-06-16 |
| CN101741599B CN101741599B (en) | 2012-08-08 |
Family
ID=42464536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101812701A Active CN101741599B (en) | 2008-11-18 | 2008-11-18 | Network transmission device and power-saving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101741599B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783628A (en) * | 2016-08-26 | 2018-03-09 | 瑞昱半导体股份有限公司 | Voltage and frequency adjusting device, System on Chip/SoC and voltage and frequency adjusting method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490990A (en) * | 2002-10-18 | 2004-04-21 | 阳庆电子股份有限公司 | Method for embedded electricity-saving system |
| CN101291230B (en) * | 2007-04-17 | 2011-11-30 | 瑞昱半导体股份有限公司 | Receiving apparatus with electricity saving function, and method thereof |
-
2008
- 2008-11-18 CN CN2008101812701A patent/CN101741599B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783628A (en) * | 2016-08-26 | 2018-03-09 | 瑞昱半导体股份有限公司 | Voltage and frequency adjusting device, System on Chip/SoC and voltage and frequency adjusting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101741599B (en) | 2012-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8670335B2 (en) | Reduced power transmission | |
| US8509259B2 (en) | Method and system for reducing transceiver power via a variable signal constellation | |
| US8724464B2 (en) | Method and system for near continuous data rate limit adjustment via a plurality of link variables in an energy efficient network | |
| EP2651042B1 (en) | System and method for power control in a physical layer device | |
| TW201719437A (en) | Protocol-assisted advanced low-power mode | |
| CN108965082B (en) | Low power data bus receiver | |
| US9184922B2 (en) | Power-over-ethernet relay system, power injector and access bridge device | |
| US8898446B2 (en) | Power over ethernet extender suitable for use with multiple powering arrangements | |
| US9264239B2 (en) | Method and apparatus for increasing the number of the powered devices supported by the PoE system | |
| US20140129853A1 (en) | Advertising power over ethernet (POE) capabilities among nodes in a POE system using type-length-value (TLV) structures | |
| JP2008521342A (en) | Common-mode data transmission for Power over Ethernet systems | |
| US8170420B2 (en) | Changing hardware settings based on data preamble | |
| US11757605B2 (en) | Inegrated circuits and method for maintaining a channel in an alive state during low power modes | |
| US11232922B2 (en) | Power supply circuit, relay device and power over ethernet system | |
| JP2011019373A (en) | Demodulation circuit, power transmission controller, power transmitter, electronic apparatus, and method of demodulating data | |
| CN204498138U (en) | A kind of reverse power supply PoE switch of automatic adjustment output power | |
| US20130044827A1 (en) | Communications Via Power Line and a Hardware Implementation | |
| CN101741599B (en) | Network transmission device and power-saving method thereof | |
| WO2020098613A1 (en) | Control method, power receiving device and system | |
| JP4776712B2 (en) | Network transmission apparatus and power saving method thereof | |
| WO2020244453A1 (en) | Method and device for transmitting data by using power line, and method and device for receiving data by using power line | |
| US11864118B2 (en) | Method and apparatus for powering a low power module from an external device | |
| CN212086081U (en) | Control circuit of non-isolated POE module | |
| CN205070989U (en) | Follow quick -witted transceiver, receiving and dispatching system and follow quick -witted receiving and dispatching system | |
| CN204347831U (en) | Unidirectional RS-422 data communication system and receiving terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |