CN101887402A - A micro-telecom computing architecture hot-swap control system and method - Google Patents

Abstract

The embodiment of the present invention discloses a micro-telecom computing architecture hot-swap control system and method, wherein the system includes: a first single board, a second single board; the in-position signal line of the first single board and the The enabling signal line of the first board is connected to the control signal line of the second board; the control signal line adopts a bidirectional control mode: the second board receives signals from the The in-position signal of the in-position signal line is used to detect whether the first board is in position; the second board sends a reset signal to the enable signal line through the control signal line to The management controller of the board is reset. By connecting the in-position signal line and the enable signal line of the first single board to the control signal line of the second single board, the system wiring can be simplified and the development cost can be reduced.

Description

A micro-telecom computing architecture hot-swap control system and method

technical field

The invention relates to the field of communication technology, in particular to a micro-telecom computing architecture hot-swap control system and method.

Background technique

With the rapid development of communication services and the continuous improvement of network bandwidth, operators have put forward higher requirements for the performance, openness, reliability, manageability and scalability of hardware platforms; at the same time, in order to adapt to small and medium capacity, low For telecommunications and enterprise applications with low cost and relatively low availability, PICMG (PCI Industrial Computers Manufacturers Group, PCI Industrial Computer Manufacturers Association) borrowed some design concepts from ATCA (Advanced Telecommunications Computing Architecture, Advanced Telecommunications Computing Architecture) to AMC (Advanced Based on the Mezzanine Card (advanced mezzanine card) plug-in card, a new type of small-sized hardware platform: MicroTCA has been introduced. It defines a new backplane, so that the existing ATCA AMC card can be used directly on it without modification. The backplane provides power supply, hot swap control, management channel and service interconnection channel for the AMC card.

According to the MicroTCA specification, the necessary components of a chassis include:

Backplane: Provides mechanical support and electrical interconnection for other constituent units;

AMC: Provide specific service access and processing functions;

MCH (MicroTCA Carrier Hub, Micro Telecom Computing Architecture Master Control Switching Unit): Provides switching channels and management functions for other units;

PM (Power Module, power module): Provide business power and management power for other units, and provide presence detection and enable control of each unit under the control of MCH;

CU (Cooling Unit, cooling unit): Provide air cooling for other components.

In the MicroTCA specification, MCH, AMC, CU, and PM are all field replaceable units (FRU, Field Replace Unit), which means that they can be pulled out and replaced from the chassis according to certain procedures, and support hot swapping. It will not affect the normal work of other units in the chassis. There is a management controller on them, among which the one on MCH is called MCMC (MicroTCA Carrier Management Controller, MicroTCA carrier management controller); the one on AMC is called MMC (Module Management Controller, module management controller); the one on CU and PM is called EMMC (EnhancedModule Management Controller, Enhanced Module Management Controller).

For MCH, AMC and CU, they each have an in-position signal line (PS1#) and an enabling signal line (ENABLE#) connected to PM. Among them, PS1# is used to detect the presence signal to determine whether the board is in place; ENABLE# is used to transmit the enabling signal (or also called the reset signal) to reset the board. Since the signal line corresponds to the signal transmitted on the signal line, PS1# can also represent the transmitted in-position signal, and ENABLE# can also represent the transmitted enable signal (reset signal), which will not be strictly distinguished in the following.

Taking AMC as an example, the usage of PS1# and ENABLE# is as follows:

When PS1#=1, AMC is not plugged in;

When PS1#＝0, AMC has been plugged in;

When ENABLE#=1, the MMC of AMC is in reset state;

When ENABLE#=0, the MMC of AMC is out of the reset state.

See Figure 1 for an existing MicroTCA hot-swap control scheme:

The above PS1# and ENABLE# connecting PM and AMC are unidirectional signals. When AMC is not in place, PS1# is high through the pull-up resistor R1; when AMC is inserted into the slot, the pull-down resistor R2 on it pulls PS1# It is low level, so the EMMC of the PM can know that the AMC is inserted into the slot. Conversely, when the AMC is pulled out, PS1# changes from low level to high level, and the EMMC can know that the AMC has been pulled out. The EMMC of the PM uses the ENABLE# signal to control the MMC reset on the AMC. For example, when ENABLE# is high, the MMC is reset, and when ENABLE# is low, the MMC exits the reset state and can start running. The MicroTCA specification stipulates that ENABLE# should also be high when the AMC is not in place.

In this technical solution, PS1# and ENABLE# are two independent signals, and there is a pair of such signals between each PM and each AMC, MCH and CU.

In the process of realizing the present invention, the inventor finds that the prior art has at least the following disadvantages:

Since there is a pair of PS1# and ENABLE# signals between each PM and AMC, MCH, and CU, when there are multiple PMs connected to multiple AMCs, MCHs, and CUs, a large number of signal lines (such as 4 PMs and 2 When one MCH, two CUs and 12 AMCs are connected, (2+2+12)*2*4=128 signal lines are required; if the AMC is also expanded, that is, the number of AMCs is increased, more signal lines are required ), therefore, increasing the difficulty and cost of backplane wiring.

Contents of the invention

An embodiment of the present invention provides a micro-telecom computing architecture hot-swap control system, including:

The first veneer, the second veneer;

The in-position signal line of the first single board is connected to the enable signal line of the first single board and then connected to the control signal line of the second single board;

The control signal line adopts a bidirectional control method:

The second single board receives an in-position signal from the in-position signal line through the control signal line, and is used to detect whether the first single board is in position;

The second single board sends a reset signal to the enable signal line through the control signal line for resetting the management controller of the first single board.

And, the embodiment of the present invention also provides a micro-telecom computing architecture hot-swapping control method, in the micro-telecom computing architecture, the in-position signal line and the enable signal line of the first single board are connected to the second single board The control signal line is connected; The method includes the following steps:

receiving an in-position signal from the first single board through a control signal line, for detecting whether the first single board is in-position;

Sending a reset signal to the management controller of the first single board through the control signal line for resetting the management controller of the first single board.

The above technical solution can simplify the system wiring and reduce the development cost by connecting the in-position signal line and the enable signal line of the first single board to the control signal line of the second single board.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a hot-swappable control system of a micro-telecom computing architecture in the prior art;

FIG. 2A is a schematic structural diagram of Embodiment 1 of the system of the present invention;

FIG. 2B is a schematic structural diagram of a second single board in Embodiment 1 of the system of the present invention;

FIG. 2C is a schematic diagram of the structure of the first single board in the first embodiment of the system of the present invention;

Fig. 3A is a schematic structural diagram of the second embodiment of the system of the present invention;

Fig. 3B is a schematic structural diagram of the enhanced module management controller in the power supply module of the second embodiment of the system of the present invention;

FIG. 3C is a schematic structural diagram of a reset circuit in Embodiment 2 of the system of the present invention;

3D is a schematic diagram of input and output waveforms when the signal of the second embodiment of the system of the present invention passes through the reset circuit;

FIG. 3E is a schematic diagram of signal waveforms in Embodiment 2 of the system of the present invention;

Fig. 4A is the flowchart of the method embodiment of the present invention;

Fig. 4B is another flowchart of the method embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments and related drawings.

System Embodiment 1

Referring to Fig. 2A, Embodiment 1 of the system of the present invention provides a MicroTCA hot-swap control system, including:

The first veneer 21, the second veneer 22;

The in-position signal line (PS1#) of the first single board 21 is connected to the enable signal line (ENABLE#) of the first single board 21 and then connected to the control signal line of the second single board 22;

The control signal line adopts a bidirectional control method:

The second veneer 22 receives an in-position signal from the in-position signal line through the control signal line, for detecting whether the first veneer 21 is in position;

The second single board 22 sends a reset signal to the enable signal line through the control signal line for resetting the management controller of the first single board 21 .

Wherein, the first single board 21 is a micro-telecom computing architecture main control switching unit (MCH), or a cooling unit (CU), or an advanced mezzanine card (AMC); the second single board 22 is a power module (PM);

In the embodiment of the present invention, a backplane 23 is also included, and the position signal line (PS1#) and the enable signal line (ENABLE#) are connected to the control signal line of the second single board 22 after the backplane 23 is connected; or,

PS1# and ENABLE# are connected to the control signal line of the second single board 22 on the backplane 23 after being connected to the first single board 21 .

Here, the control signal line of the second board 22 can use PS1# or ENABLE# originally connected to PS1# or ENABLE# of the first board 21, or use other signals allowed by the specification.

Referring to FIG. 2B, in the embodiment of the present invention, the second single board 22 further includes an output module 221 and an input module 222, wherein the output module 221 may include a reset control circuit 2211 and an output driver 2212, and the output driver 2212 is connected to the control signal line , when the second single board 22 receives the in-position signal from the in-position signal line through the control signal line, the output driver 2212 outputs a high-impedance state, so that when the in-position signal is detected, the reset signal will not be output to affect the in-position detection; The input module 222 may include a presence detection circuit 2221 and an input driver 2222, or may not include the input driver 2222 if the input signal can meet the system characteristics. The composition of the output module 221 and the input module 222 is not unique, and other circuits with similar functions can also be used to complete.

2C, the first single board 21 also includes a reset circuit 211, which is used to connect the enable signal line and the management controller of the first single board 21; when the input of the reset circuit 211 changes from an active level to an inactive level, the output will still be Keep the effective level for a period of effective interval time;

For example, when the valid interval time is 100ms, assuming that a valid level is input at 0ms, the output is also valid at 0ms; when the input valid level lasts for 10ms and then changes to an inactive level, the output is still valid at 10ms Level, until after an interval of 100ms, it turns to an invalid level at 110ms. The output will not become active again until the next input is active again. It can be seen from this that if an active level appears continuously within the effective interval time, for example, an active level is input every 60ms, the output will always remain valid.

Specifically, the reset circuit 211 includes:

Logic circuit 2111, reset chip 2112;

The logic circuit 2111 is used to logically combine the input reset sources, and output the combined signals to the reset chip 2112; the reset sources here may include: reset signal reset, or watchdog reset, or button reset;

The reset chip 2112 is used to receive the signal output by the logic circuit 2111, and convert the signal into a signal for resetting the management controller of the first single board 21; Will maintain a valid level for a valid interval.

It should be noted here that the composition of the reset circuit 211 is not unique. For example, the logic circuit can adopt various forms, and the reset chip can also choose a variety of different chips, or replace it with a similar functional circuit, or the logic circuit can also be It is integrated with the reset chip and replaced by a functional module to achieve similar functions.

In the embodiment of the present invention, when the first board management controller is reset, the control signal line first outputs a reset active level for a period of time, and at the same time turns off the detection of the in-position signal; then turns on the in-position signal detection; after the interval of the first time, the reset active level is output for a period of time, and at the same time, the detection of the in-position signal is turned off. When the in-position signal detection is turned on, it is also necessary to set the output driver to output in a high-impedance state to avoid interference with the detection of the in-position signal.

The first time here is less than the above-mentioned effective interval time, so that the output is at an active level between the two time periods when the input is at an active level; at the same time, the first time should be greater than the presence detection time, because the board The time required for in-position detection is relatively small, generally hundreds of nanoseconds to several milliseconds, so this time is easy to meet, and only needs to be set to tens of milliseconds or tens of milliseconds.

In the embodiment of the present invention, by connecting PS1# and ENABLE# of the first single board to the control signal line of the second single board, system wiring can be simplified and development cost can be reduced. At the same time, combined with the reset circuit, the active level is input at intervals, which can not only reset the first single board, but also detect whether the first single board is in place in the interval time period.

Embodiment two

Embodiment 2 of the present invention provides a MicroTCA hot swap control system, the MicroTCA system includes a first board and a second board, wherein the first board can be AMC, MCH or CU; the second board can be PM. PS1# of the first board is connected to ENABLE# and then connected to the control signal line of the second board. Since the control signal line corresponds to the control signal transmitted thereon, in the following, no strict distinction is made between the control signal line and the control signal.

The MicroTCA in this embodiment of the present invention may further include a backplane. PS1# and ENABLE# of the first single board may be connected to the control signal of the second single board on the backplane after being connected to the backplane. The PS1# and ENABLE# of the first board can also be connected on the first board first, and then the connected signal line is connected with the control signal line of the second board on the backplane; or other similar connection method.

The control signal line of the PM can use the PS1# or ENABLE# defined by the specification, and the PS1# and ENABLE# in the PM are all connected with the PS1# and ENABLE# of the first single board in the prior art. Therefore, the embodiment of the present invention can Use one of these two signals preferentially, and after using one of PS1# or ENABLE#, the other can be suspended. In another embodiment, these signals may also be used if the specification allows it, or if there are other signals allowed to be used.

Since AMC, MCH, and CU all have PS1# and ENABLE# signals, and they can be connected to PM in the same way, for the convenience of explanation, the following takes the first board as AMC and the second board as PM as an example to compare the signals The control method is described in detail. It should be understood that this control manner is also applicable to the MCH and the CU.

Referring to FIG. 3A , it is a schematic diagram of the connection between PM and AMC. ENABLE# and PS1# of AMC are connected to the control signal of PM on the backplane after being connected on the backplane. The control signal line is connected to the management controller EMMC of the PM, and at the same time, the control signal line is also connected to a pull-up resistor R1, and the pull-up resistor R1 is used to pull up the level on the control signal line.

In order to use one control signal to realize the original functions of PS1# and ENABLE#, in the embodiment of the present invention, the control signal is a bidirectional signal. Referring to Fig. 3B, it is a structural block diagram of EMMC in the PM, including a reset control circuit and an in-position detection circuit, the reset control circuit is connected with the control signal through an output driver; the in-position detection is connected with the control signal through an input driver (also called an input buffer), The control signal is bidirectionally controlled by two circuits. The output driver here can be a tri-state gate, or similar circuit modules. If the input signal characteristics of the system can meet the system requirements, the input driver may not be added.

The default control signal is an input signal (input from the direction of AMC to the direction of PM), which is used to detect whether the AMC is in place through PS1#: if the AMC is not in place (AMC is not inserted into the corresponding slot), the PM is detected by the pull-up resistor as High level; when the AMC is in place (the AMC is inserted into the corresponding slot), PS1# will be pulled to low level through the pull-down resistor R2 on the AMC. When the control signal is an input signal, set the output driver to a high-impedance state to isolate it from the outside world and avoid interference with the presence detection.

When the control signal is used as an output signal (output from the PM direction to the AMC), it is used to reset the MMC on the corresponding AMC through ENABLE#, and the ENABLE# is active at a high level. When the control signal is used as the output, the detection of the in-position signal can be turned off at the same time, the existing in-position signal remains unchanged, and the in-position signal is no longer detected. Turning off the input function when the control signal is used as the output signal can prevent the PM from misjudging the AMC. See Figure 3B. If the input function is turned on, the reset control circuit outputs a high level through the output driver when the MMC is reset (the MMC reset is high Level is effective), this high level will be input to the presence detection circuit through the input driver, so that the presence detection circuit detects a high level, and judges that the AMC is not in place. If the AMC is in place at this time, a misjudgment will occur .

Turning off the input of the control signal is well known to those skilled in the art, and it can be done through various methods, such as turning off the sampling clock of the presence detection circuit or using other means, which will not be repeated here.

When the control signal is used as an output and the input function is turned off at the same time, there will be a problem: if the MMC is pulled out of the slot during the reset process (the control signal is used as an output to reset the AMC through ENABLE#), then, because The input function has been closed, PM will not be able to receive the input signal from PS 1# and cannot detect whether the AMC is in place.

In the embodiment of the present invention, the PM resets the MMC by allowing ENABLE# to pass through the reset circuit and then output to the MMC, and at the same time to receive the in-position signal from the AMC to detect whether the AMC is in-position. The circuit has the following characteristics: when the input level is valid, the output is a valid level; when the input level changes from a valid level to an inactive level, the output does not immediately turn into an inactive level, but will maintain a valid level for a period of time. This period of time is called the effective interval time.

Referring to FIG. 3C , it is a schematic diagram of an internal structure of a reset circuit according to an embodiment of the present invention, including a logic circuit and a reset chip. Among them, the logic circuit is used to logically combine the input reset sources; in a typical AMC single board, the reset sources during normal operation usually include ENABLE# reset from PM, watchdog reset and button reset, through the logic circuit These reset sources can be reversed, or logic combinations such as AND or can be made, and any reset source can be enabled to generate a signal to reset the MMC, or other combinations can be made according to the application.

The above-mentioned reset chip has a feature: when the input level is valid, the output is a valid level; when the input level changes from a valid level to an inactive level, the output does not immediately change to an inactive level, but will remain for a period of time. For example, when the reset chip ADM708 is used in the embodiment of the present invention, after the input of the reset chip changes from an active level to an inactive level, the output of the reset chip does not immediately change to an inactive level, but keeps for 160ms, and then turns to an inactive level. invalid level. Therefore, if an active level is input every less than 160ms, the output will remain active.

Referring to FIG. 3D , it is a schematic diagram of waveforms before and after the signal passes through the reset chip, assuming that the input signal is active low, and the output reset signal is also active low. In Figure 3D, the input reset signal outputs an active level (low level) at T0, and the output is also an active level (low level); at T1, the input reset signal changes from an active level to an inactive level , but the output does not immediately turn to an inactive level, but lasts for 160ms; since the input reset signal is input at a valid level at T2 in less than 160ms, and turns to an inactive level at T3, the output The reset signal will continue to have an active level for 160ms after T3, and will not output an invalid level until 160ms later, at T4.

It should be noted here that the waveforms of the input reset signal and the output reset signal do not represent real waveforms. In practical applications, the rising or falling edges of the waveforms may not be vertical, but have a rising or falling slope. At the same time, the above-mentioned moments, such as 160ms, may not be strictly accurate 160ms, and there may be certain errors according to actual application conditions.

What needs to be explained here is that the composition of the reset circuit is not unique, and other logic devices, reset chips or similar combined circuits can also be used to complete the corresponding functions.

In the embodiment of the present invention, when the MMC is reset (ENABLE# high level is effective), the control signal is not high level all the time, but first outputs a high level for a period of time, and simultaneously closes the detection of the in-position signal; then Then turn on the detection of the in-position signal. At this time, the output driver should also be set to a high-impedance state. After an interval of T, the output will be reset to a high level for a period of time; in this way, the in-position detection can also be received within the interval of T. Repeat the above process until the MMC reset is complete. The interval time T here should be less than the effective interval time. At the same time, the interval time T should be greater than the on-position detection time. Since the on-position detection time is usually relatively small, such as hundreds of ns to several ms, the time T is easy to meet, as long as it is set to a dozen ms or tens of ms.

Referring to Fig. 3E, the above control process will be described below in combination with the input and output schematic diagrams of various waveforms:

In Figure 3E, there are 4 signals in total, which are the control signal, ENABLE#, reset chip input and reset chip output, wherein the reset chip here is the reset chip ADM708, and the reset chip input is the output of the logic circuit in Figure 3C. The reset chip outputs a reset signal to the MMC. The ENABLE# signal is active at high level, and at the same time it is assumed that the input and output of the reset chip are active at low level. Since the control signal line and ENABLE# are connected together, the waveforms of the two are consistent. The meaning of each waveform in each period is as follows:

During the T2 time period, the control signal outputs a high level; ENABLE# also outputs a high level (active level). It is low level (active level); during the T3 time period, the output driver outputs high impedance. At this time, due to the existence of the pull-down resistor R2, the control signal signal and the ENABLE# level are pulled to low level, and the logic circuit After inversion, the input of the reset chip is high level, and the output is still low level; during the T3 time period, if the presence detection is turned on, it can detect whether the AMC is in position. T3 should be less than 160ms and greater than the time required to detect in-position, and then the control signal outputs a high level at T4. This process is similar to T2 and will not be repeated here; similarly, the waveforms of T5, T7 and T1 You can refer to the analysis at the T3 stage, and the waveform at T6 can refer to the analysis at the T2 and T4 stages, and will not repeat them here.

Referring to FIG. 3E , since the reset chip inputs a valid level every time less than the valid interval, the output of the reset chip will always remain valid. Therefore, while satisfying the need to reset the MMC, it is also possible to detect the presence of the AMC.

It should be noted here that the waveform schematic diagram is only a schematic diagram of a specific implementation solution of the present invention, and the schematic diagram will be different according to different reset chips or reset circuits.

In the embodiment of the present invention, by connecting PS1# and ENABLE# of the first single board to the control signal line of the second single board, system wiring can be simplified and development cost can be reduced. At the same time, combined with the reset circuit, the active level is input at intervals, which can not only reset the first single board, but also detect whether the first single board is in place in the interval time period.

method embodiment

The embodiment of the method of the present invention provides a MicroTCA hot-swapping control method. In the micro-telecom computing architecture, the in-position signal line and the enable signal line of the first board are connected to the control signal line of the second board. ; Wherein, the MicroTCA also includes a backplane, the in-position signal line and the enable signal line can be connected to the control signal line after the backplane is connected; or the in-position signal line and the enable signal line are first connected on the first board Then connect with the control signal line on the back panel.

Here, the first single board is the main control switching unit (MCH) of the Micro Telecom Computing Architecture, or the cooling unit (CU), or the advanced mezzanine card (AMC); the second single board is the power module (PM).

Referring to Figure 4A, the above method includes the following steps:

S101. Receive an in-position signal from the first board through a control signal line, so as to detect whether the first board is in-position;

In the second board, there is also an output driver connected to the control signal. When the control signal receives the in-position signal and detects the in-position signal, the output driver output is in a high-impedance state, which can avoid interference to the detection.

S102. Send a reset signal to the management controller of the first board through the control signal line, so as to reset the management controller of the first board.

In the embodiment of the present invention, the first single board also includes a reset circuit, which is used to connect the enable signal line and the management controller of the first single board; when the input of the reset circuit changes from an active level to an inactive level, the output will still maintain Active level for a valid interval.

When the management controller of the first single board is reset, the control signal line outputs a period of time to reset the active level earlier, and closes the detection of the in-position signal at the same time; The driver outputs a high-impedance state); output a reset active level for a period of time after the first time interval, and at the same time turn off the detection of the in-position signal; repeat the above process until the end of the reset. The above-mentioned first time should be less than the effective interval time and greater than the presence detection time.

In the embodiment of the present invention, the first single board also includes a reset circuit, which is used to connect the enable signal line and the management controller of the first single board; when the input of the reset circuit changes from an active level to an inactive level, the output will still maintain Active level for a valid interval.

For the hardware block diagram and the specific control method in the embodiment of the present invention, reference may be made to relevant parts in the system embodiment. Referring to Fig. 3A, Fig. 3B and Fig. 3C, the embodiment of the present invention can adopt the specific circuit connection method in the second system embodiment. When the above-mentioned specific circuit is used, refer to Fig. 4B, the MicroTCA hot plug can be performed through the following steps control:

S201, the AMC is not in place, the PM output driver output is in a high-impedance state, the presence detection input is turned on, and the pull-up resistor is pulled up to a high level;

S202. After the AMC is inserted into the slot, the voltage is divided to a low level through the pull-down resistor. After the PM detects that the AMC is in place, it provides management power to it;

S203, the MMC on the AMC is powered on and reset, and after the communication with the PM is normal, the PM provides it with service power;

S204. When the AMC needs to be reset, the control signal of the PM outputs a high level, and at the same time, the presence detection input is turned off. After a period of time, the output driver outputs high impedance and turns on the presence detection input at the same time; repeat the above process until the reset process ends;

S205. After the reset is completed, the output driver of the PM is in a high-impedance state, and the presence detection input is turned on, and is pulled down to a low level by a pull-down resistor;

And S206, after the AMC is pulled out, the presence detection input is at a high level, and the PM turns off the corresponding management power and service power, and then executes step S201 to repeat the above process.

In the embodiment of the present invention, by connecting PS1# and ENABLE# of the first single board to the control signal line of the second single board, system wiring can be simplified and development cost can be reduced. At the same time, combined with the reset circuit, the active level is input at intervals, which can not only reset the first single board, but also detect whether the first single board is in place in the interval time period.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

The above-listed preferred embodiments have further described the purpose, technical solutions and advantages of the present invention in detail. It should be understood that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present invention.

Claims (10)

1. A micro telecommunications computing architecture hot plug control system, comprising:

a first single board and a second single board;

the in-place signal line of the first single board is connected with the enabling signal line of the first single board and then is connected with the control signal line of the second single board;

the control signal line adopts a bidirectional control mode:

the second single board receives an in-place signal from the in-place signal line through the control signal line, and is used for detecting whether the first single board is in place or not;

and the second single board sends a reset signal to an enabling signal line through the control signal line, and the reset signal is used for resetting the management controller of the first single board.

2. The micro telecommunications computing architecture hot plug control system of claim 1, wherein:

the first single board is a micro telecommunication computing architecture main control exchange unit, or a heat dissipation unit, or an advanced interlayer card; the second single board is a power module.

3. The micro telecommunication computing architecture hot plug control system according to claim 1, wherein the control signal line of the second board may be:

an enable signal line of the second board, or an in-place signal line of the second board.

4. The micro telecommunications computing architecture hot plug control system of claim 1, wherein:

the in-place signal line and the enabling signal line are connected with the control signal line of the second single board after the connection of the back board; or,

and the in-place signal line and the enabling signal line are connected on the first single board and then connected with the control signal line of the second single board on the back board.

5. The micro telecommunications computing architecture hot plug control system of claim 1, wherein:

the second single board further comprises an output driver, and the output driver is connected with the control signal line; when the second single board receives the in-place signal from the in-place signal line through the control signal line, the output driver outputs a high impedance state.

6. The micro telecommunications computing architecture hot plug control system of claim 1, wherein:

the first single board further comprises a reset circuit, and the reset circuit is used for connecting the enabling signal line and the management controller of the first single board; when the input of the reset circuit is changed from the active level to the inactive level, the output still keeps the active level for a period of active interval time;

when the management controller of the first single board is reset, the control signal line firstly outputs a reset effective level for a period of time, and simultaneously, the detection of the on-site signal is closed; then, the detection of the in-place signal is started; outputting a period of time reset effective level after the first time interval, and simultaneously closing the detection of the on-site signal; the first time is less than the valid interval time and greater than an in-place detection time.

7. The micro-telecommunications computing architecture hot plug control system of claim 6, wherein the reset circuit comprises: a logic circuit, resetting the chip;

the logic circuit is used for logically combining the input reset sources and outputting the combined signals to the reset chip; the reset source comprises: resetting a reset signal, or resetting a watchdog, or resetting a button;

the reset chip is used for receiving the signal output by the logic circuit and converting the signal into a signal for resetting the first single-board management controller; when the reset chip input transitions from an active level to an inactive level, the reset chip output will remain active for an active interval of time.

8. A hot plug control method of micro telecommunication computing architecture is characterized in that in the micro telecommunication computing architecture, an in-place signal line and an enabling signal line of a first single board are connected and then connected with a control signal line of a second single board; the method comprises the following steps:

receiving an in-place signal from the first single board through a control signal line, and detecting whether the first single board is in place;

and sending a reset signal to the management controller of the first single board through a control signal line, so as to reset the management controller of the first single board.

9. The micro telecommunications computing architecture hot plug control method of claim 8, wherein:

the step of sending a reset signal to the management controller of the first board via the control signal line includes: when the management controller of the first single board is reset, the control signal line firstly outputs a reset effective level for a period of time, and simultaneously, the detection of the on-site signal is closed; then, the detection of the in-place signal is started; and outputting a period of reset effective level after the first time interval, and simultaneously closing the detection of the on-position signal.

10. The micro telecommunications computing architecture hot plug control method of claim 8, wherein:

the first single board is a micro telecommunication computing architecture main control exchange unit, or a heat dissipation unit, or an advanced interlayer card; the second single board is a power module.

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