CN213521911U - Intelligent network card NCSI interface clock signal adjusting device - Google Patents
Intelligent network card NCSI interface clock signal adjusting device Download PDFInfo
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- CN213521911U CN213521911U CN202023081194.2U CN202023081194U CN213521911U CN 213521911 U CN213521911 U CN 213521911U CN 202023081194 U CN202023081194 U CN 202023081194U CN 213521911 U CN213521911 U CN 213521911U
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Abstract
The utility model provides an intelligence network card NCSI interface clock signal adjusting device, the utility model discloses a RC parallel circuit is connected to network controller in intelligent network card, can adjust the voltage and the rise time isoparametric of inputing network controller at wideer within range, realizes two parameter independent regulations, each other does not influence. The signal received by the network controller can meet the requirements of an NCSI or a network controller chip, the normal work of the whole system is ensured, the stability of the system is improved, the electromagnetic radiation is reduced, circuits on a server do not need to be adjusted, the network controller can be adapted to different servers, and the adjustment of signal voltage and rise time is realized.
Description
Technical Field
The utility model relates to an intelligence network card technical field, especially an intelligence network card NCSI interface clock signal adjusting device.
Background
With the rise of technologies such as artificial intelligence, big data, cloud computing, edge computing and the like, more and more intelligent network cards are provided for various application scenes. The data processing task is processed and transferred to the intelligent network cards from the original server, and the pressure of the server is greatly relieved. The Network Controller Sideband Interface (NCSI) is an industry standard for sideband interface network controllers defined by the Distributed Management Task Force (DMTF) to support server out-of-band management. And the management controller on the server realizes the management of the intelligent network card through an NCSI interface.
The NCSI standard has strict requirements on the maximum voltage, minimum voltage, input high level, input low level, rise time, fall time, and the like of the receiving end. However, because the intelligent network card needs to be used in cooperation with the server, the server platforms are various, the wiring lengths on different server main boards are different, and some cables even pass through cables with different lengths, so that when the same network card is adapted to different servers, the standard requirements of NCSI (network communications interface) cannot be met, the problems that the signal level of a receiving end is too large, the electromagnetic radiation exceeds the standard due to too small rising or falling time and the like often occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an intelligence network card NCSI interface clock signal adjusting device, the problem that can't satisfy NCSI's standard requirement when aiming at solving the different servers of intelligence network card adaptation among the prior art realizes the regulation to signal voltage and rise time, the different server of adaptation.
In order to achieve the technical purpose, the utility model provides an intelligence network card NCSI interface clock signal adjusting device, the device includes:
the server end connector is connected with the intelligent network card end connector through a cable;
a crystal oscillator signal in a crystal oscillator chip in the server end is divided into two paths through a clock buffer, one path is connected to the management controller through a resistor R1, and the other path is connected to the connector through a resistor R2;
the connector in the intelligent network card end is connected with a network controller, and an RC parallel circuit formed by connecting a resistor R and a capacitor C in parallel is connected at a pin of the network controller.
Preferably, the resistor R in the RC parallel circuit controls the voltage of the clock signal.
Preferably, a capacitor C in the RC parallel circuit controls the clock signal rising and falling times.
Preferably, one end of the RC parallel circuit is connected with the network controller, and the other end of the RC parallel circuit is grounded.
The effects provided in the contents of the present invention are only the effects of the embodiments, not all the effects of the present invention, and one of the above technical solutions has the following advantages or advantageous effects:
compared with the prior art, the utility model discloses a network controller connects RC parallel circuit in intelligent network card, can adjust the voltage and the rise time isoparametric of inputing network controller in wideer scope, realizes two parameter independent regulations, each other does not influence. The signal received by the network controller can meet the requirements of an NCSI or a network controller chip, the normal work of the whole system is ensured, the stability of the system is improved, the electromagnetic radiation is reduced, circuits on a server do not need to be adjusted, the network controller can be adapted to different servers, and the adjustment of signal voltage and rise time is realized.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent network card NCSI interface clock signal adjusting device provided in the present invention;
fig. 2 is a waveform diagram of the parallel resistor R provided in the present invention at 100 ohm and 50 ohm respectively;
fig. 3 is a waveform diagram of the parallel capacitor C provided in the present invention when the parallel capacitor C is 100 picofarads and 4.7 picofarads, respectively.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention.
The following describes the clock signal adjusting device of the NCSI interface of the intelligent network card in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an intelligence network card NCSI interface clock signal adjusting device, the device includes:
the server end connector is connected with the intelligent network card end connector through a cable;
a crystal oscillator signal in a crystal oscillator chip in the server end is divided into two paths through a clock buffer, one path is connected to the management controller through a resistor R1, and the other path is connected to the connector through a resistor R2;
the connector in the intelligent network card end is connected with a network controller, and an RC parallel circuit formed by connecting a resistor R and a capacitor C in parallel is connected at a pin of the network controller.
Before the RC parallel circuit is added, parameters such as signal amplitude, rising time and the like received by the network controller can only be adjusted by adjusting the resistor R2 on the server, on one hand, the repair of the existing server is involved, on the other hand, when the resistor is increased, the rising time can be influenced at the same time, so that the adjusting capacity is limited, and independent adjusting control can not be realized on two parameters such as signal voltage and rising time.
By adding the RC parallel circuit in the intelligent network card, parameters such as voltage and rise time input to the network controller can be adjusted in a wider range, and two parameters can be adjusted independently without mutual influence. The signal received by the network controller can meet the requirements of an NCSI or a network controller chip, the normal work of the whole system is ensured, the stability of the system is improved, the electromagnetic radiation is reduced, and circuits on a server do not need to be adjusted.
In order to verify the regulation of the resistance size to the signal voltage and the control of the capacitance size to the rise time in the RC parallel circuit, the sizes of the parallel resistance and the parallel capacitance are respectively changed, and the changes of the signal voltage and the rise time are checked through a oscillogram.
Fig. 2 is a waveform diagram of the parallel resistance R at 100 ohms and 50 ohms, respectively. The maximum voltage is about 2.7V when the resistance R3 is 100 ohms, and the maximum voltage is reduced to about 2V when the resistance R3 is 50 ohms. To increase the voltage, only a larger resistor needs to be selected, and the independent regulation and control of the voltage of the receiving end is realized by adjusting the parallel resistance value.
Fig. 3 is a waveform diagram of the parallel capacitor C at 100 picofarads and 4.7 picofarads, respectively. The waveform of 4.7 picofarads with short rise and fall times and the waveform of 100 picofarads with long rise and fall times. By selecting different capacitors, the rising and falling time of the clock signal is controlled, and the smaller the capacitor is, the smaller the rising and falling time is, and the larger the capacitor is, the larger the rising and falling time is.
The utility model discloses can make things convenient for the different servers of network card adaptation, realize the regulation to signal voltage and rise time.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. An intelligent network card NCSI interface clock signal adjusting device, characterized in that, the device includes:
the server end connector is connected with the intelligent network card end connector through a cable;
a crystal oscillator signal in a crystal oscillator chip in the server end is divided into two paths through a clock buffer, one path is connected to the management controller through a resistor R1, and the other path is connected to the connector through a resistor R2;
the connector in the intelligent network card end is connected with a network controller, and an RC parallel circuit formed by connecting a resistor R and a capacitor C in parallel is connected at a pin of the network controller.
2. The device for adjusting the clock signal of the NCSI interface of the intelligent network card according to claim 1, wherein a resistor R in the RC parallel circuit controls the voltage of the clock signal.
3. The device for adjusting the clock signal of the NCSI interface of the intelligent network card according to claim 1, wherein a capacitor C in the RC parallel circuit controls the rising and falling time of the clock signal.
4. The device for adjusting the clock signal of the NCSI interface of the intelligent network card according to claim 1, wherein one end of the RC parallel circuit is connected to the network controller, and the other end is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081194.2U CN213521911U (en) | 2020-12-18 | 2020-12-18 | Intelligent network card NCSI interface clock signal adjusting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081194.2U CN213521911U (en) | 2020-12-18 | 2020-12-18 | Intelligent network card NCSI interface clock signal adjusting device |
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| CN213521911U true CN213521911U (en) | 2021-06-22 |
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| CN202023081194.2U Active CN213521911U (en) | 2020-12-18 | 2020-12-18 | Intelligent network card NCSI interface clock signal adjusting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114610662A (en) * | 2022-03-08 | 2022-06-10 | 浪潮云信息技术股份公司 | NCSI (network control information system) time sequence adjusting method and device |
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2020
- 2020-12-18 CN CN202023081194.2U patent/CN213521911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114610662A (en) * | 2022-03-08 | 2022-06-10 | 浪潮云信息技术股份公司 | NCSI (network control information system) time sequence adjusting method and device |
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