JPH04143817A - Exchange module capable of active exchange - Google Patents

Abstract

PURPOSE:To attain the accurate resetting operations at the time of exchanging active and turning ON/OFF of a system power supply by instructing a resetting operation based on a logical sum secured between the reception signal of a reception means and the generation signal of a generation means. CONSTITUTION:A generation means 7 instructs a resetting means 4 to transmit a reset signal before reception of a power voltage signal supplied with a delay at the time of the active addition. So that an electronic circuit element 3 is reset and the operation of the element 3 is stopped. Meanwhile a reception means 6 instructs the means 4 to transmit the reset signal as long as the level of the power voltage supplied in an exchange module 1 is not fixed. Thus the element 3 is reset and the operation of the element 3 is stopped. Then the means 4 is instructed to transmit the reset signal before the power voltage supplied into the module 1 becomes unfixed based on a 1st reset instruction signal when the power supply of an electronic equipment is turned off. Thus an accurate resetting operation is attained.

Description

[Detailed Description of the Invention] [Summary] Regarding a hot-swappable replacement module that enables hot-swap while the power is turned on, the electronic circuit installed thereon can be used both during hot-swap and when the system is turned on/off. The purpose is to perform accurate setting processing for elements, and it is supplied from electronic equipment and instructs to send a reset signal while the power is uncertain when the power is turned on, and when the power is turned off, the power is uncertain. comprising a receiving means for receiving a signal instructing to send a reset signal before tiffl, and configured so that the received signal of the receiving means is supplied to the module later than tiffl,
The reset means is configured to instruct the reset process according to the presence or absence of an instruction signal received by the receiving means and the contents of the instruction, and also provides a time difference between the power supply voltage supplied from the electronic device and the general signal. On the other hand, when adding activation, it instructs to send a reset signal until receiving a general signal that is supplied with a delay, and when removing activation, it instructs to send a reset signal from the time when the supply of the general signal that is to be cut first is cut off. The apparatus is configured to include a generating means for generating an instructing signal, and to instruct the reset process according to the logical sum of the received signal of the receiving means and the generated signal of the generating means.

(Industrial Application Field) The present invention relates to a hot-replaceable replacement module that is attached to an electronic device and enables hot replacement (addition/deletion) of the electronic device in a power-on state. both during hot replacement and when powering on/off the system.
The present invention relates to a hot-replaceable replacement module that performs accurate reset processing on mounted electronic circuit elements.

When an electronic device such as an information processing device made up of a computer breaks down, the conventional method has been to temporarily stop the operation of the electronic device and replace the failed module such as a printed wiring board. However, this method has a problem in that the operation of the electronic equipment is stopped while the module is being replaced. Therefore, against this background, we realized active deletion, which deletes a failed module, and active addition, which adds a new module, while the electronic equipment continues to operate without turning off the power to the electronic equipment. Active exchange technology has become widespread.

From the module's point of view, this hot replacement is nothing but tti, input/disconnection of a single module.
While the power supply voltage is uncertain, initial settings of logic circuits such as on-board flip-flops are performed, and reset processing is performed, including cutting off external interface signals and prohibiting writing to non-volatile memory. We have to go. In other words, if the power supply voltage at the time of activation addition or deletion has not reached the normal value, the normal operation of the logic circuit inside the module cannot be guaranteed. It is necessary to block the external interface signal of the device so as not to have a negative effect on the electronic device to which it is installed, and
If the module is equipped with non-volatile memory such as EEPROM or battery-hacked RAM, it is necessary to temporarily prohibit writing to prevent the memory contents from being destroyed. .

In order to implement active replacement of modules installed in electronic equipment, it is necessary to be able to accurately perform reset processing on such installed electronic circuit elements.

(Prior Art) FIG. 6 shows a circuit configuration of a conventional exchange module that enables hot exchange. In FIG. As shown in this figure, the connection point between the exchange module 20 and the connector 21 is designed so that the power supply voltage Vcc and ground GND pins are longer than other general signal pins. By doing so, when adding activation, general signals are connected after ias+ and ground,
At the time of activation deletion, a configuration is adopted in which the power supply and ground are disconnected after the -i signal. The reason for configuring such a connection sequence is to protect the logic circuit elements inside the exchange module 20 (circuit elements such as CMO3,
There is a risk of damage if the input voltage is applied before the potential of the power supply/ground is determined to the normal value), and also to prevent instability caused by the undetermined voltage inside the replacement module 20. This is to prevent output signals from being transmitted to other modules.

The exchange module 20 has the following functions in order to enable active exchange.
A comparator circuit 22 is provided. This comparator circuit 22 is connected to the power supply voltage Vcc within the exchange module 20.
By outputting a LOW level when the voltage divided by the resistors R, , R, is smaller than the on-voltage of the Zener diode 23 connected to one terminal J, and outputting a HIGH level when it is larger, the power supply is When the voltage Vcc is lower than the voltage value that defines normal operation of the electronic circuit elements in the exchange module 20, the flip-flop circuit 24 mounted on the exchange module 20 and the driver 25 provided for outputting external interface signals or,
A reset process is being executed for non-volatile memory such as the EEPROM 26.

That is, when adding activation, the source/ground pin is connected first, and then the general signal pin is connected. In this way, when the power supply voltage inside the replacement module 20 increases due to the power supply voltage being supplied, the comparator circuit 22 determines that the power supply voltage inside the replacement module 20 determines that the electronic circuit element normally operates. When detecting that the voltage is lower than the voltage value, a LOW level reset signal (R
ESET signal), the replacement module 20
A clear signal is input to the clear terminal of the flip-flop circuit 24 mounted on the driver 25, such as a tri-state type, to stop the operation of the flip-flop circuit 24.
By sending a disable signal to the EEPROM 26, the sending of the external interface signal is cut off, and by sending a day slide enable signal to the EEPROM 26 via the AND gate 27, writing to the EEPROM 26 is prohibited and the reset process is executed. . The comparator circuit 22 is connected to the ! in the exchange module 20. #When it is detected that the voltage reaches the voltage value that defines the normal operation of the electronic circuit element, it outputs a HIGH level reset signal to cancel this reset process and enter normal operation process. In the figure, 28 is a receiver that receives signals from electronic equipment.

On the other hand, when deactivating, first the general signal pin is disconnected, and then the power supply/ground bin is disconnected. In this way, when the supply of power supply voltage is stopped and the power supply voltage within the replacement module 20 drops, the comparator circuit 22 determines whether the power supply voltage within the replacement module 20 is sufficient for normal operation of the electronic circuit elements. When it is detected that the voltage is lower than the voltage value that defines the voltage, a LOW level reset signal is outputted to perform the above-described reset processing on the flip-flop circuit 24, driver 25, and EEPROM 26.

This comparator circuit 22 also performs the same reset process as when adding activation when the electronic device main body is powered on, so that the electronic circuit elements of the necessary replacement module 20 are reset when the electronic device main body is powered on. In addition to executing the reset process when the electronic device itself is powered off, the same reset process as when deactivating the device is executed.
Replacement module 2 required when powering off the electronic device main unit
It operates to execute reset processing for the electronic circuit element 0.

[Problem to be solved by the invention]

Indeed, in the conventional replacement module 20, only the comparator circuit 22 is provided, and the reset processing required when adding/removing the activation of the replacement module 20 and the reset processing required when turning on/off the power of the electronic device main body are performed. This has the advantage that it is possible to perform both the reset process and the reset process.

However, on the other hand, since this method uses an analog method to compare the voltages and instructs the execution of the reset process, there is a problem in that a comparator circuit 22 with relatively high precision must be prepared. However, there is a problem that the reset process cannot be executed with high precision because it is susceptible to noise and aging.

For example, tolerance 1 for electronic circuit elements on replacement module 20
ir! It pressure accuracy is 5%, and the t supplied by the electronic equipment body
ai! If the voltage accuracy is 4%, the controller circuit 22 must perform the power supply voltage comparison process with an accuracy of 1%.

Since power supply voltage comparison processing must be performed with such high precision, in the conventional replacement module 20, the reset processing required when adding/removing activation of the replacement module 20 and the electronic device There has been a problem in that the reset process required when powering on/off the main body cannot be accurately executed due to noise applied to the power supply voltage and aging of electronic circuit elements around the comparator circuit 22. Furthermore, even during actual operation, there is a problem in that erroneous reset processing may be executed due to this noise and aging.

The present invention has been made in view of the above circumstances, and is intended to enable accurate reset processing to be performed on mounted electronic circuit elements during active replacement of a replacement module and when powering on/off the system. The purpose is to provide a new hot-swappable replacement module.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle configuration of the present invention. Here, in Figure 1 (
1(a) is a diagram showing the principle of the present invention as defined in claim (1), and FIG. 1(b) is a diagram of the principle of the present invention as defined in claim (2).

In the figure, 1 is an exchange module constructed according to the present invention and is a module that enables active exchange; 2
3 is a connector on the side of the electronic device to which the exchange module 1 is attached, and is connected to the exchange module 1; 3 is an electronic circuit element mounted on the exchange module 1, such as a flip-flop circuit, a driver, a nonvolatile memory, etc. It is an electronic circuit element.

4 is a reset means constituting the present invention in FIG. 1(a), which executes a reset process of the electronic circuit element 3 by sending a reset signal to the electronic circuit element 3;
Reference numeral 5 denotes a reset means constituting the present invention shown in FIG. 1(b), which executes a reset process for the electronic circuit element 3 by sending a reset signal to the electronic circuit element 3.

6 is a receiving means, which is supplied from the connector 2 side to the exchange module 1, and instructs the reset means 4 and 5 to send a reset signal while the power supply voltage is uncertain when the electronic device is powered on; The first signal instructs to send a reset signal before the power supply voltage becomes uncertain when powering off electronic equipment.
It receives the reset instruction signal. The first reset instruction signal received by the receiving means 6 is configured to be supplied to the exchange module 1 later than the power supply voltage signal.

7 is a generating means which gives a time difference between the connection of the power supply voltage supplied from the connector 2 side and the general signal, and generates a general signal which is supplied with a delay to the reset means 4 when the replacement module 1 is activated. A second reset instruction signal is issued to instruct the transmission of a reset signal until the supply of the general signal is cut off when the replacement module 1 is activated. It is something that generates.

The reset means 4 of FIG. 1(a) instructs the transmission of a reset signal by either the first reset instruction signal received by the receiving means 6 or the second reset instruction signal generated by the generating means 7. Sometimes, it is processed to send a reset signal. The reset means 5 in FIG. 1(b) sends out a reset signal in accordance with the first reset instruction signal received by the receiver 6, and also when the receiver 6 does not receive the first reset instruction signal. Process it so that it sends out a reset signal.

[Effect]

In the present invention shown in FIG. 1(a), the generating means 7 generates a signal with a time difference by receiving the power supply voltage signal given from the connector 2, for example, through two different length power supply bins and a general signal pin. When adding activation, the reset means 4 is instructed to send a reset signal to reset the electronic circuit element 3 and stop its operation until the delayed power supply voltage signal is received. .

At the time of deactivation, the reset means 4 is instructed to send a reset signal from the time when the supply of the power supply voltage signal is cut off first, according to the generated power supply voltage signal with a time difference, and The circuit element 3 is reset to stop its operation.

On the other hand, when the electronic device is powered on, the receiving means 6 resets the resetting means 4 while the level of the power supply voltage supplied to the exchange module 1 is uncertain, according to the received first reset instruction signal. Instruct the sending of signals,
The electronic circuit element 3 is reset to stop its operation, and when the electronic device is powered off, the power supply voltage supplied to the exchange module 1 becomes uncertain according to the received first reset instruction signal. First, the reset means 4 is instructed to send a reset signal to reset the electronic circuit element 3 and stop its operation.

In this way, the present invention shown in FIG. 1(a) does not require the use of a comparator circuit that performs analog level voltage comparison as in the prior art, and can be used for active replacement and power-on of electronic equipment.
Accurate reset processing can be performed on the mounted electronic circuit element 3 both at the time of disconnection and at the time of disconnection. Then, this reset processing stops the output processing of the driver provided as the electronic circuit element 3 that controls the output of the external interface signal, and when the electronic circuit element 3 includes a nonvolatile memory element, the nonvolatile memory element is Since writing processing to the memory element is prohibited, it is possible to reliably prevent an adverse effect on the processing function of the electronic device.

In the present invention shown in FIG. 1(b), the reset means 5 is configured such that at the time of activation addition, the receiving means 6 has not received the first reset instruction signal at the time when power supply to the replacement module 1 is started. In response to this, a reset signal is sent to the electronic circuit element 3 (thereby stopping its operation, and by connecting it to the connector 2, the receiving means 6 receives the first reset instruction signal). Then, the reset signal to the electronic circuit element 3 is canceled in accordance with the first reset instruction signal that does not instruct the transmission of the reset signal.Then, when deactivating the activation, the reset signal to the electronic circuit element 3 is canceled before the power supply to the replacement module 1 is cut off. Then, in response to the receiving means 6 not receiving the first reset instruction signal due to the disconnection from the connector 2, a reset signal is sent to the electronic circuit element 3 to stop its operation. .

On the other hand, when the electronic device is on standby, the receiving means 6 receives, according to the first reset instruction signal, while the level of the power supply voltage supplied to the exchange module 1 is uncertain.
The reset means 5 is instructed to send a reset signal to reset the electronic circuit element 3 and stop its operation. When the electronic device is powered off, the reset means 5 is instructed to send out a reset signal according to the received first reset instruction signal before the power supply voltage supplied to the exchange module 1 becomes uncertain. Then, the electronic circuit element 3 is reset and its operation is stopped.

In this way, the present invention shown in FIG. 1(b) does not require the use of a comparator circuit that performs analog level voltage comparison as in the conventional case, and can be used for active replacement and power-on of electronic equipment.
Accurate reset processing can be performed on the mounted electronic circuit element 3 both at the time of disconnection and at the time of disconnection. Through this reset processing, it is possible to reliably prevent an adverse effect on the processing function of the electronic device, similar to the present invention shown in FIG. 1(a).

(Example〕 Hereinafter, the present invention will be explained in detail according to examples.

FIG. 2 illustrates an embodiment of the present invention. In the figure, the same parts as those explained in FIG. 6 are indicated by the same symbols. Reference numeral 10 denotes an exchange module configured according to the present invention that enables active exchange, and 11 is a connector on the side of an electronic device connected to this exchange module 10.

As is clear from a comparison with the prior art shown in FIG. 6, in this embodiment, the connector 11 is configured to branch the power supply voltage Vcc into two and supply it to the exchange module IO, and also to The generated power confirmation status signal (PR
DY signal) is supplied to the exchange module 10. This IT power supply confirmed status signal that will be newly supplied to the replacement module 10 displays a LOW level while the power supply voltage is uncertain when the electronic device is powered on, and displays a LOW level while the power supply voltage is uncertain when the electronic device is powered off. A control signal that displays a LOW level before
This is a control signal that has been conventionally used to control the main body of electronic equipment.

On the other hand, the exchange module 10 is configured to receive one of the two branched and supplied 1i source voltages Vcc through a power supply bin that is longer than the general signal bin, and to receive the other through the general signal bin. The device is configured to receive the power confirmation status signal on the general signal pin. Furthermore, a series connection circuit consisting of a first resistor 12, a first diode 13, and a second resistor 14 is connected between the power supply voltage V c c received at the power supply pin and the ground. At the midpoint between the diode 13 and the second resistor 14, there is a power supply voltage ■ received at the general signal bin. In addition, a second diode 15 and a third diode are connected between the midpoint of the first resistor 12 and the first diode 13 and the ground.
A series connection circuit consisting of a resistor 16 is connected, and a power confirmation status signal received at a general signal pin is connected to the midpoint between the second diode 15 and the third resistor 16. .

Then, according to the signal level at point A, which is the midpoint between the first resistor 12 and the first diode 13 (also the midpoint between the first resistor 12 and the second diode 15), the internal switching module 10 When the power supply voltage Vcc is low, a LOW level reset signal (RESET) is sent to the flip-flop circuit 24, driver 25, and AND gate 27.
signal), the flip-flop circuit 24
The configuration is such that a reset process is executed in which the operation of the EEPROM 26 is stopped, the transmission of external interface signals from the driver 25 is cut off, and writing to the EEPROM 26 is instructed to be prohibited.

Next, with reference to the time charts shown in FIGS. 3 and 4, the operational processing of the embodiment of FIG. 2 configured as described above will be described.

When adding an active replacement module 10, first turn on the power supply.
The ground bin is connected and the time chart in Figure 3 shows ■
As shown in FIG. 2, the power supply voltage within the replacement module 10 rises to the normal value Vcc.

At this time, since the general signal pins are in an unconnected state,
The cathode potentials of the first and second diodes L 3.15 are set to the ground level via the second resistor 14 and the third resistor 16, respectively, so that the cathode potentials of the first and second diodes L 3.15 Both are in the on state. As a result, the voltage level at point A is set to LOW level, thereby stopping the operation of the flip-flow 71 circuit 24,
The reset process is executed by cutting off the sending of external interface signals from the driver 25 and prohibiting writing to the EEPROM 26.

Then, when the general signal pin is connected, the power supply voltage ■ is applied to the cathode of the first diode 13.

is applied, and the HIGH level of the tin steady-state signal is applied to the cathode of the second diode 15, so that the first and second diodes 13.15 turn off, and the voltage level at point A changes. By setting Hl (, H level), the reset signal is set to HIGH level (■ in the time chart of FIG. 3), the reset process is canceled, and the activation addition process is completed.

When the replacement module 10 is activated, the general signal pin is first disconnected, and the first and second diodes 1 are disconnected.
The cathode potential of 3.15 is the second resistor 14, respectively.
By being set to ground level via the third resistor 16, both the first and second diodes 13.15 are turned on. This causes the voltage level at point A to be LO
By setting it to W level, the reset signal goes LOW.
level (■ in the time chart in Figure 3), the reset process is executed, and then the power supply and ground pins are disconnected, and the replacement module is set as shown in ■ in the time chart in Figure 3. The power supply voltage supply to 10 is stopped and the activation deletion process is completed.

On the other hand, when the replacement module 10 is connected and the power is turned on on the electronic device side as shown in the time chart (■) in FIG. rises to. This one! When the power is turned on, the power confirmation state signal applied from the general signal pin displays a LOW level, so the second diode 15 is turned on. As a result, the voltage level at point A is set to LOW level, and the reset signal is set to LOW level.
It is set to OW level to execute reset processing. Subsequently, since the power confirmation state signal will display the HIGH level (■ in the time chart in Figure 4), the second diode 150 cathode will be connected to the HIGH level.
By applying this level, the second diode 15 turns off, and the voltage level at point A is set to HIGH level, thereby setting the reset signal to HIGH level (■ in the time chart in Figure 4). ) to complete its reset process.

If the power is cut off on the electronic equipment side while the replacement module 10 is connected, as shown in the time chart (■) in Fig. 4, the power confirmation status signal given from the general signal pin is sent prior to the cutoff. Since the LOW level is displayed, the second diode 15 is turned on. As a result, the voltage level at point A is set to LOW level, and the reset signal is set to LOW level (■ in the time chart in Figure 4) to execute the reset process. As shown in ■, 1
lts voltage ■. The process ends when 0 is disconnected.

In the embodiment shown in FIG. 2, the tit voltage connected to the general signal bin is used as the signal for setting the cathode potential of the first diode 13 to the Hl level, but the power supply voltage is not used. It is also possible to configure

Next, another embodiment of the present invention shown in FIG. 5 will be described. In the figure, the same parts as those explained in FIGS. 2 and 6 are indicated by the same symbols.

In this embodiment as well, the connector 1 is similar to the embodiment shown in FIG.
1 is the power confirmation status signal (PRD) generated by the electronic device.
This configuration adopts a configuration in which a Y signal) is supplied to the exchange module 10. On the other hand, the replacement module 10 receives the newly supplied power supply confirmed state signal through a signal pin having the same length as the general signal pin, and connects a fourth resistor 17 between the received power supply confirmed state signal and the ground. Then, according to the signal level at point B, which is the connection point between this power confirmation state signal and the fourth resistor 17, the power supply voltage in the exchange module 10 is determined. When becomes low, a LOW signal is applied to the flip-flop circuit 24, driver 25, and AND gate 27.
By applying a level reset signal, a configuration is adopted in which reset processing is executed.

Next, with reference to the time charts shown in FIGS. 3 and 4, the operational processing of the embodiment shown in FIG. 5 configured as described above will be explained.

When adding an active replacement module 10, first turn on the power supply.
The ground pin is connected, and the time chart in Figure 3 shows ■
As shown in , the a:st pressure within the replacement module 10 rises to the normal value Vcc.

At this time, since the general signal pins are in an unconnected state,
When the voltage level at point B is set to the ground level, the operation of the flip-flop circuit 24 is stopped, the sending of the external interface signal from the driver 25 is cut off, and writing to the EEPROM 26 is prohibited (thereby causing a reset). The process is executed, and then, when the general signal bin is connected, the voltage level at point B becomes ilG)( due to the power confirmation status signal at level HIG)(
By setting the level, the reset signal goes HIGH.
The level is set (■ in the time chart in FIG. 3), the reset process is canceled, and the activation addition process is completed.

When deactivating the replacement module 10, first, the connection of the general signal bin is cut off, and this sets the voltage level at point B to the ground level, thereby setting the reset signal to the LOW level (time in Figure 3). ■ of the chart
), the reset process is executed, and then the connection between the t-a and ground pins is cut, thereby stopping the supply of power supply voltage to the replacement module 10, as shown by ■ in the time chart of FIG. Complete active deletion processing.

On the other hand, when the replacement module 10 is connected and the power is turned on on the electronic device side as shown in the time chart (■) in FIG. rises to. At this point in time when the power is turned on, the power confirmation status signal given from the general signal pin displays the LOW level, so by setting the voltage level at point B to the LOW level, the reset signal is set to the LOW level.
It is set to OW level to execute reset processing.

Subsequently, since the power supply confirmed state signal will display the HIGH level (■ in the time chart in Figure 4), the voltage level at point B will be set to the HIGH level, and the reset signal will be is at the HIGH level (
(■) in the time chart of FIG. 4, and the reset process is completed.

When the power is cut off on the electronic device side while the replacement module 10 is connected, as shown in the time chart (■) in Fig. 4, the power confirmation status signal given from the general signal pin is sent prior to the cutoff. Since the LOW level is displayed, the voltage level at point B is set to the LOW level, the reset signal is set to the LOW level (■ in the time chart in Figure 4), and the reset process is executed, and then, As shown in the time chart (2) in FIG. 4, the process ends when the power supply voltage VC is cut off.

In this way, in the present invention, the reset process is performed by using the connection order of the power/ground signal and the general signal during active replacement, without using the analog level of the supplied power supply voltage as in the past. At the same time, when powering on/off the electronic device, reset processing is performed based on the supplied power state determination signal, so the replacement module 10 is This makes it possible to accurately reset the mounted electronic circuit elements.

Although the illustrated embodiment has been described, the present invention is not limited thereto. For example, in the embodiment, the attachment light of the exchange module 10 has been described as an electronic device, but this electronic device is configured by a computer. It is not limited to information processing equipment, but refers to all electronic equipment.

(Effects of the Invention) As explained above, according to the present invention, a replacement module installed in an electronic device can be installed both during active replacement of the replacement module and when powering on/off the system. This makes it possible to perform accurate reset processing on electronic circuit elements that is resistant to noise and aging.

[Brief explanation of drawings]

Fig. 1 is a diagram of the principle configuration of the present invention, Fig. 2 is an embodiment of the present invention, Figs. 3 and 4 are time charts of operation processing of the embodiment, and Fig. 5 is another embodiment of the present invention. Example: FIG. 6 is an explanatory diagram of the prior art. In the figure, 1 is a replacement module, 2 is a connector, 4 is an electronic circuit element, 4 and 5 are reset means, 6 is a receiving means, and 7 is a generating means. teeth

Claims (3)

[Claims] (1) A hot-replaceable replacement module that is installed in an electronic device and enables activation addition and deletion while the electronic device is powered on, and which sends a reset signal to the installed electronic circuit elements. a reset means (4) that sends out a reset signal; and a reset signal that is supplied from the electronic device to the exchange module and instructs the reset means (4) to send out a reset signal until the power supply voltage is determined when the electronic device is powered on. death,
receiving means (6) for receiving a first reset instruction signal for instructing transmission of a reset signal before the power supply voltage becomes uncertain when powering off the electronic device; When a replacement module is added to the active state, the reset means (4) is instructed to send a reset signal until it receives a general signal that is supplied with a delay, and the activation of the replacement module is removed. Sometimes, a generating means (7) generates a second reset instruction signal that instructs the transmission of the reset signal from the time when the supply of the general signal that is first cut off is cut off.
), and the reset means (4) is configured such that either the first reset instruction signal received by the reception means (6) or the second reset instruction signal generated by the generation means (7) is 1. A hot-replaceable replacement module, characterized in that the module is configured to send out a reset signal when giving an instruction to send out a reset signal. (2) A hot-replaceable replacement module that is installed in an electronic device and enables active addition and removal while the electronic device is powered on, and that sends a reset signal to the installed electronic circuit elements. a reset means (5) that sends out a reset signal; and a reset signal that is supplied from the electronic device to the exchange module and instructs the reset means (5) to send out a reset signal until the power supply voltage is determined when the electronic device is powered on. death,
A receiving means (6) is provided for receiving a reset instruction signal that instructs to send a reset signal before the power supply voltage becomes uncertain when the electronic device is powered off, and the reset instruction signal is transmitted when a replacement module is activated. , is configured to be supplied to the replacement module with a delay in time than the power supply voltage, and is configured to be disconnected in time before the power supply voltage when deactivating the replacement module, and the reset means (5) ) is the receiving means (6
) is configured to transmit a reset signal in accordance with the reset instruction signal received by the receiving means (6), and also to transmit the reset signal even when the reset instruction signal is not supplied to the receiving means (6). Replaceable replacement module. (3) In the hot-replaceable replacement module according to claim (1) or (2), as an electronic circuit element mounted on the replacement module,
The configuration is equipped with a driver that controls the output of external interface signals, and also includes a nonvolatile memory element that stores memory data in a nonvolatile manner as necessary, and the output of the driver is controlled by a reset signal from the reset means (4, 5). When the non-volatile memory element is provided, the non-volatile memory element is configured to execute a write-inhibit process with respect to the non-volatile memory element by a reset signal from the reset means (4, 5). A hot-replaceable exchange module characterized by: