Control chip and control system

Abstract

This invention provides a control chip and control system, mounted on a motherboard, and including a first detection pin, a second detection pin, a detection circuit, and a judgment circuit. The first detection pin is coupled to a first external device. The first external device has a first light-emitting module. The second detection pin is coupled to a second external device. The second external device has a second light-emitting module. The detection circuit detects the voltage of the first and second detection pins to generate a first detection signal and a second detection signal. The judgment circuit determines whether the first and second external devices are connected to the motherboard based on the first and second detection signals. When both the first and second external devices are connected to the motherboard, the judgment circuit controls the lighting effects presented by the first and second light-emitting modules.

Description

Technical Field

[0001] This invention relates to a control chip, and more particularly to a control chip for controlling multiple light-emitting modules. Background Technology

[0002] To meet the demands of the esports market, many peripheral devices feature lighting capabilities. Different peripheral devices use different clock signals to control the lighting effects. When different peripheral devices are integrated into the same system, the timing of the lighting effects gradually becomes lag-dependent because the clock signals between the peripheral devices are not synchronized. Furthermore, it is difficult for the lighting effects of different peripheral devices to be interactive. Summary of the Invention

[0003] An embodiment of the present invention provides a control chip disposed on a motherboard, and includes a first detection pin, a second detection pin, a first control pin, a second control pin, a detection circuit, and a judgment circuit. The first detection pin is coupled to a first external device. The first external device has a first light-emitting module. The second detection pin is coupled to a second external device. The second external device has a second light-emitting module. The first control pin is coupled to the first light-emitting module. The second control pin is coupled to the second light-emitting module. The detection circuit detects the voltage of the first and second detection pins to generate a first detection signal and a second detection signal. The judgment circuit determines whether the first and second external devices are connected to the motherboard based on the first and second detection signals. When both the first and second external devices are connected to the motherboard, the judgment circuit provides a first lighting effect command to the first control pin and a second lighting effect command to the second control pin. The first light-emitting module displays a first lighting effect according to the first lighting effect command. The second light-emitting module displays a second lighting effect according to the second lighting effect command.

[0004] The present invention further provides a control system, including a motherboard and a control chip. The control chip is disposed on the motherboard and includes a first detection pin, a second detection pin, a first control pin, a second control pin, a detection circuit, and a judgment circuit. The first detection pin is coupled to a first external device. The first external device has a first light-emitting module. The second detection pin is coupled to a second external device. The second external device has a second light-emitting module. The first control pin is coupled to the first light-emitting module. The second control pin is coupled to the second light-emitting module. The detection circuit detects the voltage of the first and second detection pins to generate a first detection signal and a second detection signal. The judgment circuit determines whether the first and second external devices are connected to the motherboard based on the first and second detection signals. When both the first and second external devices are connected to the motherboard, the judgment circuit provides a first lighting effect command to the first control pin and a second lighting effect command to the second control pin. The first light-emitting module presents a first lighting effect according to the first lighting effect command. The second light-emitting module presents a second light effect according to the second light effect command. Attached Figure Description

[0005] Figure 1A This is a schematic diagram of the control system of the present invention.

[0006] Figure 1B This is another schematic diagram of the control system of the present invention.

[0007] Figure 2A This is a schematic diagram of the lighting effect of the light-emitting module of the present invention.

[0008] Figure 2B This is another schematic diagram of the lighting effect of the light-emitting module of the present invention.

[0009] Figure 3 This is a schematic diagram of the control circuit of the present invention.

[0010] Symbol Explanation

[0011] 100A, 100B: Control System

[0012] 110A, 110B: Motherboard

[0013] 120A, 120B: Control chips

[0014] CP_1~CP_4: Detection pins

[0015] LCP_1~LCP_4: Control pins

[0016] 121A, 121B: Control circuit

[0017] 130, 150, 170, 190: External devices

[0018] 140, 160, 180, 200: Slots

[0019] T_1~T_4: Contact ends

[0020] P1~P4: Pins

[0021] 131, 151, 210, 220, 230, 240: Light-emitting modules

[0022] SCM_1~SCM_4: Lighting Effect Commands

[0023] LT_1~LT_8, 211~218, 221~228, 231~238, 241~248: Light-emitting elements

[0024] R1~R4, 132, 152: Resistors

[0025] VDD: Operating voltage

[0026] 310: Detection Circuit

[0027] 320: Judgment Circuit

[0028] SD_1, SD_2: Detection signals

[0029] 330: Platform Path Controller

[0030] 340: Central Processing Unit Detailed Implementation

[0031] To make the objectives, features, and advantages of this invention more apparent and understandable, embodiments are provided below in conjunction with the accompanying drawings for detailed description. This specification provides different embodiments to illustrate the technical features of different implementations of the invention. The configuration of the elements in the embodiments is for illustrative purposes only and is not intended to limit the invention. Furthermore, the repetition of some reference numerals in the embodiments is for simplification and does not imply any correlation between different embodiments.

[0032] Figure 1A This is a schematic diagram of the control system of the present invention. As shown, the control system 100A includes a motherboard 110A and a control chip 120A. In one possible embodiment, the control chip 120A is a microcontroller (MCU). In this embodiment, the control chip 120A is disposed on the motherboard 110A and includes detection pins CP_1, CP_2, control pins LCP_1, LCP_2, and a control circuit 121A.

[0033] The detection pin CP_1 is used to couple an external device 130. In this embodiment, the control system 100A further includes a slot 140. The slot 140 is disposed on the motherboard 110A. The detection pin CP_1 is indirectly coupled to the external device 130 through the slot 140. The detection pin CP_1 is electrically connected to the contact terminal T_1 of the slot 140. When the external device 130 is inserted into the slot 140, the pin P1 of the external device 130 is electrically connected to the contact terminal T_1 of the slot 140.

[0034] External device 130 includes pins P1 and P2 and a light-emitting module 131. When external device 130 is inserted into slot 140, pin P1 is electrically connected to contact terminal T_1, and pin P2 is electrically connected to contact terminal T_2. Light-emitting module 131 is coupled to pin P2 to receive a lighting effect command SCM_1. Light-emitting module 131 presents a lighting effect according to lighting effect command SCM_1, such as a breathing light effect or a water ripple light effect. This invention does not limit the circuit architecture of light-emitting module 131. In one possible embodiment, light-emitting module 131 may be a light strip. In this embodiment, light-emitting module 131 includes light-emitting elements LT_1 to LT_4, but this is not intended to limit the invention. In other embodiments, light-emitting module 131 includes more or fewer light-emitting elements. In one possible embodiment, light-emitting elements LT_1 to LT_4 are light-emitting diodes (LEDs). The light-emitting module 131 controls the light-emitting time and color of the light-emitting elements LT_1 to LT_4 according to the light effect instruction SCM_1.

[0035] This invention does not limit the type of external device 130. In one possible embodiment, external device 130 is a memory module, such as a dual in-line memory module (DIMM). In this example, external device 130 further includes a storage circuit (not shown) and a plurality of access pins (not shown). The storage circuit receives and stores data from motherboard 110A or outputs data to motherboard 110A through these access pins. In some embodiments, motherboard 110A has a specific chip (not shown) for accessing external device 130. The specific chip (such as a CPU) connects to the access pins of external device 130 through other contacts of slot 140. In this example, slot 140 is a memory slot.

[0036] In another possible embodiment, the external device 130 includes a heat dissipation device, such as a fan. In this example, the external device 130 has other control pins for receiving control commands from the motherboard 110A and adjusting the fan speed according to the control commands. In some embodiments, the control circuit 121A generates a lighting effect command SCM_1 based on the fan speed, causing the lighting effect presented by the light-emitting module 131 to change with the fan speed. In some embodiments, the external device 130 is a housing, such as a computer case. In this example, the motherboard 110A is disposed in the housing.

[0037] The detection pin CP_2 is used to couple an external device 150. In this embodiment, the control system 100A further includes a slot 160. The slot 160 is disposed on the motherboard 110A. The detection pin CP_2 is indirectly coupled to the external device 150 through the slot 160. In a possible embodiment, the detection pin CP_2 is electrically connected to the contact terminal T_3 of the slot 160. When the external device 150 is inserted into the slot 160, pin P3 of the external device 150 is electrically connected to the contact terminal T_3 of the slot 160.

[0038] External device 150 includes pins P3 and P4 and a light-emitting module 151. When external device 150 is inserted into slot 160, pin P3 is electrically connected to contact terminal T_3, and pin P4 is electrically connected to contact terminal T_4. Light-emitting module 151 is coupled to pin P4 to receive lighting effect command SCM_2. In this embodiment, light-emitting module 151 presents a lighting effect according to lighting effect command SCM_2. Since the characteristics of light-emitting module 151 are the same as those of light-emitting module 131, they will not be described again.

[0039] Since the characteristics of external device 150 are the same as those of external device 130, they will not be described again. In some embodiments, the architecture of external device 130 may be the same as that of external device 150. For example, both external devices 130 and 150 are memory modules. In another possible embodiment, the architecture of external device 130 is different from that of external device 150. For example, external device 130 includes a fan, and external device 150 includes a computer case.

[0040] The control pin LCP_1 is used to couple to the light-emitting module 131 of the external device 130 and transmit the lighting effect command SCM_1. When the external device 130 is inserted into the slot 140, pin P2 is electrically connected to the contact terminal T_2. The control pin LCP_1 provides the lighting effect command SCM_1 to the light-emitting module 131 through the contact terminal T_2.

[0041] The control pin LCP_2 is used to couple to the light-emitting module 151 of the external device 150 and transmit the lighting effect command SCM_2. When the external device 150 is inserted into the slot 160, pin P4 is electrically connected to the contact terminal T_4. The control pin LCP_2 provides the lighting effect command SCM_2 to the light-emitting module 151 through the contact terminal T_4.

[0042] This invention does not limit the number of detection pins and control pins. In other embodiments, the control chip 120A has more detection pins and control pins to control the lighting effects of more external devices. In this embodiment, the control circuit 121A determines whether external devices 130 and 150 are connected to the motherboard 110A based on the voltage of detection pins CP_1 and CP_2.

[0043] For example, when the voltage at the detection pin CP_1 equals a first preset potential, it indicates that the external device 130 has been connected to the motherboard 110A. Therefore, the control circuit 121A generates a lighting effect command SCM_1 to the control pin LCP_1. When the voltage at the detection pin CP_1 is not equal to the first preset potential, it indicates that the external device 130 has not yet been connected to the motherboard 110A. Therefore, the control circuit 121A stops generating the lighting effect command SCM_1.

[0044] Similarly, when the voltage at the detection pin CP_2 equals a second preset potential, it indicates that the external device 150 has been connected to the motherboard 110A. Therefore, the control circuit 121A generates a lighting effect command SCM_2 to the control pin LCP_2. When the voltage at the detection pin CP_2 is not equal to the second preset potential, it indicates that the external device 150 has not yet been connected to the motherboard 110A. Therefore, the control circuit 121A stops generating the lighting effect command SCM_2.

[0045] The first preset potential may be the same as or different from the second preset potential. The control circuit 121A determines the connection status of external devices 130 and 150 to the motherboard 110A based on the voltage of the detection pins CP_1 and CP_2, and then generates corresponding lighting effect commands accordingly. For example, when external device 130 is connected to the motherboard 110A, the control circuit 121A requests the light-emitting module 131 to display a first lighting effect via lighting effect command SCM_1. At this time, if external device 150 is connected to the motherboard 110A, in addition to requesting the light-emitting module 151 to display a second lighting effect via lighting effect command SCM_2, the control circuit 121A also requests the light-emitting module 131 to display a third lighting effect via lighting effect command SCM_1. In other words, when external device 130 is connected to motherboard 110A alone, the lighting effect presented by the light-emitting module 131 may be different from or the same as the lighting effect presented by the light-emitting module 131 when external devices 130 and 150 are connected to motherboard 110A at the same time.

[0046] In some embodiments, when external devices 130 and 150 are both connected to the motherboard 110A, the control circuit 121A synchronizes the lighting effects presented by the light-emitting modules 131 and 151 through lighting effect commands SCM_1 and SCM_2. In another possible embodiment, the lighting effects presented by the light-emitting modules 131 and 151 have an interactive effect, such as a chain lighting effect. In other words, the light-emitting module 131 works first, and then the light-emitting module 151 works next. When the light-emitting module 131 is working, the light-emitting module 151 stops working. When the light-emitting module 151 is working, the light-emitting module 131 pauses working. For example, light-emitting elements LT_1 to LT_4 are lit sequentially. In this example, after light-emitting element LT_4 is lit, light-emitting elements LT_5 to LT_8 are lit sequentially.

[0047] In other embodiments, the control circuit 121A determines the types of external devices 130 and 150 based on the voltages of detection pins CP_1 and CP_2. Taking detection pin CP_1 as an example, when the voltage of detection pin CP_1 equals a first specific voltage, it indicates that external device 130 is of the first type, such as a memory module. When the voltage of detection pin CP_1 equals a second specific voltage, it indicates that external device 130 is of the second type, such as a fan. When the voltage of detection pin CP_1 equals a third specific voltage, it indicates that external device 130 is of the third type, such as a housing. The control circuit 121A generates appropriate lighting effect commands SCM_1 and SCM_2 based on the types of external devices 130 and 150.

[0048] In other embodiments, the control system 100A further includes resistors R1 and R2. Resistors R1 and R2 are disposed on the motherboard 110A and are independent of the control chip 120A, but are not intended to limit the invention. In other embodiments, resistors R1 and R2 may be integrated into the control chip 120A. In this embodiment, resistor R1 receives the operating voltage VDD and is coupled to the detection pin CP_1, and resistor R2 receives the operating voltage VDD and is coupled to the detection pin CP_2.

[0049] Taking the detection pin CP_1 as an example, when the voltage at the detection pin CP_1 is approximately equal to the operating voltage VDD, it indicates that the external device 130 is not yet connected to the motherboard 110A. Therefore, the control circuit 121A does not generate the lighting effect command SCM_1. When the voltage at the detection pin CP_1 is not equal to the operating voltage VDD, it indicates that the external device 130 is connected to the motherboard 110A. Therefore, the control circuit 121A starts generating the lighting effect command SCM_1.

[0050] In some embodiments, the external device 130 further includes a resistor 132. When the external device 130 is inserted into the slot 140, since the resistor R1 is connected in series with the resistor 132, the voltage at the detection pin CP_1 is equal to a first voltage divider. Furthermore, different types of external devices may have resistors 132 with different resistance values. In this example, the control circuit 121A can determine the type of external device 130 based on the voltage at the detection pin CP_1.

[0051] Similarly, external device 150 further includes a resistor 152. When external device 150 is inserted into slot 160, since resistor R2 is connected in series with resistor 152, the voltage at detection pin CP_5 is equal to a second voltage divider. The second voltage divider may be the same as or different from the first voltage divider. For example, when external devices 130 and 150 are of the same type, the first voltage divider may be equal to the second voltage divider. When external devices 130 and 150 are of different types, the first voltage divider may not be equal to the second voltage divider.

[0052] Figure 1B This is another schematic diagram of the control system of the present invention. Figure 1B resemblance Figure 1A The difference lies in that the control chip 120B further includes detection pins CP_3 and CP_4, and control pins LCP_3 and LCP_4. The control circuit 121B determines whether external devices 170 and 190 are connected to the motherboard 110B based on the voltage of the detection pins CP_3 and CP_4. When external device 170 is connected to the motherboard 110B, the control circuit 121B provides a lighting effect command SCM_3 to external device 170 via the control pin LCP_3 to control the lighting effect presented by the light-emitting module (not shown) of external device 170. When external device 190 is connected to the motherboard 110B, the control circuit 121B provides a lighting effect command SCM_4 to external device 190 via the control pin LCP_4 to control the lighting effect presented by the light-emitting module (not shown) of external device 190. Since the characteristics of external devices 170 and 190 are the same as those of external device 130, they will not be described in detail again.

[0053] By controlling the lighting effects of multiple external device light-emitting modules with a single control chip 120B, not only can costs be saved, but the usable space for external devices can also be increased, as there is no need to set up a control chip for each external device. Furthermore, the lighting effect commands issued by the same control chip enable different light-emitting modules to present synchronized lighting effects, and also enable the lighting effects between different light-emitting modules to be interactive.

[0054] In this embodiment, the motherboard 110B of the control system 100B further includes slots 180 and 200. Slot 180 is disposed in the motherboard 110B and includes contacts T_5 and T_6. Contact T_5 is electrically connected to the detection pin CP_3. Contact T_6 is electrically connected to the control pin LCP_3. When the external device 170 is coupled to slot 180, the external device 170 is electrically connected to contacts T_5 and T_6. Slot 200 is disposed in the motherboard 110B and includes contacts T_7 and T_8. Contact T_7 is electrically connected to the detection pin CP_4. Contact T_8 is electrically connected to the control pin LCP_4. When the external device 190 is coupled to slot 200, the external device 190 is electrically connected to contacts T_7 and T_8.

[0055] Since the characteristics of slots 180 and 200 are similar to those of slot 140, they will not be described further. The types of slots 140, 160, 180, and 200 are related to the types of external devices 130, 150, 170, and 190. In some embodiments, at least one of external devices 130, 150, 170, and 190 is of a different type than the others. In this example, one of slots 140, 160, 180, and 200 is of a different type than the others.

[0056] In some embodiments, the motherboard 110B further includes resistors R3 and R4. Resistor R3 receives the operating voltage VDD and is coupled to the detection pin CP_3. Resistor R4 receives the operating voltage VDD and is coupled to the detection pin CP_4. Since the characteristics of resistors R3 and R4 are similar to those of resistor R1, they will not be described further.

[0057] Figure 2A This is a schematic diagram of the lighting effect of the light-emitting module of the present invention. It is assumed that light-emitting modules 210, 220, 230, and 240 are respectively disposed in... Figure 1B Among the external devices 130, 150, 170, and 190, the light-emitting module 210 controls light-emitting elements 211 to 218 according to the light effect command SCM_1. The light-emitting module 220 controls light-emitting elements 221 to 228 according to the light effect command SCM_2. The light-emitting module 230 controls light-emitting elements 231 to 238 according to the light effect command SCM_3. The light-emitting module 240 controls light-emitting elements 241 to 248 according to the light effect command SCM_4.

[0058] In this embodiment, light-emitting modules 210, 220, 230, and 240 present interactive lighting effects. For example, in a first period, light-emitting elements 211 and 212 are lit, while the other light-emitting elements are not lit. In a second period, light-emitting elements 223 and 224 are lit, while the other light-emitting elements are not lit. In a third period, light-emitting elements 235 and 236 are lit, while the other light-emitting elements are not lit. In a fourth period, light-emitting elements 247 and 248 are lit, while the other light-emitting elements are not lit.

[0059] Figure 2B This is another schematic diagram of the lighting effect of the light-emitting module of the present invention. In this embodiment, the light-emitting modules 210, 220, 230, and 240 present a water ripple lighting effect. For example, the brightness of light-emitting elements 211-218 gradually increases, while the brightness of light-emitting elements 221-228 gradually decreases. The brightness of light-emitting elements 211-218 is the same as the brightness of light-emitting elements 228-221. In this example, the brightness of light-emitting elements 211-218 is the same as the brightness of light-emitting elements 231-238, and the brightness of light-emitting elements 221-228 is the same as the brightness of light-emitting elements 241-248.

[0060] Figure 3 This is a schematic diagram of the control circuit of the present invention. Since control circuits 121A and 121B operate similarly, therefore... Figure 3 Taking control circuit 121A as an example. As shown in the figure, control circuit 121A includes a detection circuit 310 and a judgment circuit 320. Detection circuit 310 detects the voltage of detection pins CP_1 and CP_2 to generate detection signals SD_1 and SD_2. In other embodiments, when detection circuit 310 detects the voltage of more detection pins, detection circuit 310 generates more detection signals.

[0061] In one possible embodiment, the detection circuit 310 detects the voltage at the detection pin CP_1 and determines whether the voltage at the detection pin CP_1 is equal to a first preset voltage. When the voltage at the detection pin CP_1 is equal to the first preset voltage, it indicates that the external device 130 has been connected to the motherboard 110A. Therefore, the detection circuit 310 sets the detection signal SD_1 to a first potential, such as a high potential. When the voltage at the detection pin CP_1 is not equal to the first preset voltage, it indicates that the external device 130 has not yet been connected to the motherboard 110A. Therefore, the detection circuit 310 sets the detection signal SD_1 to a second potential, such as a low potential.

[0062] In another possible embodiment, the detection circuit 310 detects the voltage at the detection pin CP_2 and determines whether the voltage at the detection pin CP_2 is equal to a second preset voltage. The second preset voltage may be the same as or different from the first preset voltage. When the voltage at the detection pin CP_2 is equal to the second preset voltage, it indicates that the external device 150 has been connected to the motherboard 110A. Therefore, the detection circuit 310 sets the detection signal SD_2 to a first potential. When the voltage at the detection pin CP_2 is not equal to the second preset voltage, it indicates that the external device 150 has not yet been connected to the motherboard 110A. Therefore, the detection circuit 310 sets the detection signal SD_2 to a second potential.

[0063] The determination circuit 320 determines whether external devices 130 and 150 are connected to the motherboard 110A based on detection signals SD_1 and SD_2. For example, when detection signal SD_1 is at the first potential, it indicates that external device 130 is connected to the motherboard 110A. Therefore, the determination circuit 320 provides a lighting effect command SCM_1 to the control pin LCP_1. When detection signal SD_1 is at the second potential, it indicates that external device 130 is not connected to the motherboard 110A. Therefore, the determination circuit 320 stops providing the lighting effect command SCM_1. Similarly, when detection signal SD_2 is at the first potential, it indicates that external device 150 is connected to the motherboard 110A. Therefore, the determination circuit 320 provides a lighting effect command SCM_2 to the control pin LCP_2. When detection signal SD_2 is at the second potential, it indicates that external device 150 is not connected to the motherboard 110A. Therefore, the determination circuit 320 stops providing the lighting effect command SCM_2.

[0064] In one possible embodiment, the determination circuit 320 assigns lighting effect commands SCM_1 and SCM_2 to different channels (i.e., control pins LCP_1 and LCP_2) based on a clock signal (not shown). By using the same clock signal, the determination circuit 320 uniformly controls the light-emitting modules of all external devices, avoiding asynchronous lighting effects between modules and enabling interactive lighting effects between them. Furthermore, the determination circuit 320 appropriately controls the lighting effects of external devices connected to the motherboard based on their connection status, providing a better lighting effect. In other embodiments, when the detection circuit 310 provides more detection signals, the determination circuit 320 generates more lighting effect commands to more control pins.

[0065] In some embodiments, the control circuit 121A further includes a platform controller hub 330 and a central processing unit 340. In this example, the determination circuit 320 informs the central processing unit 340, through the platform controller hub 330, of the current connection status between the external devices 130 and 150 and the motherboard 110A.

[0066] In one possible embodiment, the central processing unit 340 controls the operation of external devices 130 and 150. Taking external device 130 as an example, it is assumed that external device 130 is a memory module. In this example, when external device 130 is connected to motherboard 110A, central processing unit 340 may access external device 130 through slot 140.

[0067] It is important to understand that when a component or layer is mentioned as being "coupled" to another component or layer, it can be directly coupled or connected to the other component or layer, or have other components or layers in between. Conversely, if a component or layer is "connected" to another component or layer, there will be no other components or layers in between.

[0068] Unless otherwise defined, all terms herein (including technical and scientific terms) are as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, unless expressly stated otherwise, definitions of terms in general dictionaries should be interpreted as consistent with their meaning in the context of their respective technical fields, and not as idealized or overly formal expressions. While terms such as “first” and “second” may be used to describe various elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. In the claims, terms such as “first” and “second” are used as designations and are not intended to impose numerical requirements on their contents.

[0069] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make modifications and refinements without departing from the spirit and scope of the invention. For example, the systems, apparatus, or methods described in the embodiments of the present invention can be implemented in physical embodiments of hardware, software, or a combination of hardware and software. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A control chip, characterized in that, It is configured on a motherboard and includes: A first detection pin is used to couple to a first external device, the first external device having a first light-emitting module; A second detection pin is used to couple a second external device, the second external device having a second light-emitting module; A first control pin is used to couple the first light-emitting module; A second control pin is used to couple the second light-emitting module; A detection circuit detects the voltage of the first detection pin and the voltage of the second detection pin to generate a first detection signal and a second detection signal. A judgment circuit determines, based on the first detection signal and the second detection signal, whether the first external device and the second external device have been connected to the motherboard. in: When both the first external device and the second external device are connected to the motherboard, the judgment circuit provides a first lighting effect command to the first control pin and a second lighting effect command to the second control pin. The first light-emitting module presents a first lighting effect according to the first lighting effect command, and the second light-emitting module presents a second lighting effect according to the second lighting effect command.

2. The control chip as described in claim 1, characterized in that, Including: A first resistor is connected to the first detection pin; as well as A second resistor is connected to the second detection pin. in: When the voltage at the first detection pin is equal to a first preset potential, it indicates that the first external device has been connected to the motherboard. When the voltage of the second detection pin is equal to a second preset potential, it indicates that the second external device has been connected to the motherboard.

3. The control chip as described in claim 2, characterized in that, The first preset potential is not equal to the second preset potential.

4. The control chip as described in claim 3, characterized in that, When the voltage of the first detection pin is not equal to the first preset potential, the judgment circuit stops providing the first lighting effect command; when the voltage of the second detection pin is not equal to the second preset potential, the judgment circuit stops providing the second lighting effect command.

5. A control system, characterized in that, include: One motherboard; as well as A control chip, located on the motherboard, includes: A first detection pin is used to couple to a first external device, the first external device including a first light-emitting module; A second detection pin is used to couple a second external device, the second external device including a second light-emitting module; A first control pin is used to couple the first light-emitting module; A second control pin is used to couple the second light-emitting module; A detection circuit detects the voltage of the first detection pin and the voltage of the second detection pin to generate a first detection signal and a second detection signal. A judgment circuit determines, based on the first detection signal and the second detection signal, whether the first external device and the second external device have been connected to the motherboard. in: When both the first external device and the second external device are connected to the motherboard, the judgment circuit provides a first lighting effect command to the first control pin and a second lighting effect command to the second control pin. The first light-emitting module presents a first lighting effect according to the first lighting effect command, and the second light-emitting module presents a second lighting effect according to the second lighting effect command.

6. The control system as described in claim 5, characterized in that, Including: A first slot for mounting the first external device; A second slot for mounting the second external device. in: The first detection pin is electrically connected to the first slot, and the second detection pin is electrically connected to the second slot.

7. The control system as described in claim 6, characterized in that, The first and second slots are memory slots.

8. The control system as described in claim 6, characterized in that, The first slot includes: A first contact terminal is electrically connected to the first detection pin; A second contact terminal is electrically connected to the first control pin. in: When the first external device is coupled to the first slot, the first contact end is electrically connected to a first pin of the first external device, and the second contact end is electrically connected to a second pin of the first external device.

9. The control system as described in claim 8, characterized in that, The second slot includes: The third contact terminal is electrically connected to the second detection pin; The fourth contact terminal is electrically connected to the second control pin. in: When the second external device is coupled to the second slot, the third contact terminal is electrically connected to a third pin of the second external device, and the fourth contact terminal is electrically connected to a fourth pin of the second external device.

10. The control system as described in claim 9, characterized in that, Including: A first resistor is connected to the first detection pin; as well as A second resistor is connected to the second detection pin. in: The first pin is coupled to a third resistor, and the third pin is coupled to a fourth resistor. The second pin is coupled to the first light-emitting module, and the fourth pin is coupled to the second light-emitting module.

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