CN209980238U - Compatible expansion device and electronic equipment - Google Patents
Compatible expansion device and electronic equipment Download PDFInfo
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- CN209980238U CN209980238U CN201921296149.3U CN201921296149U CN209980238U CN 209980238 U CN209980238 U CN 209980238U CN 201921296149 U CN201921296149 U CN 201921296149U CN 209980238 U CN209980238 U CN 209980238U
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Abstract
The embodiment of the utility model provides a compatible extension device and electronic equipment relates to, belongs to electron technical field. The device includes: the system comprises a main board, an expansion board and a switch chip, wherein the main board is provided with a processor, first equipment and a plurality of second equipment, and each second equipment is connected with a signal input bus of the processor; the expansion board is provided with an expander, and the expander is provided with a plurality of expansion ends used for connecting a plurality of expansion devices; the switch chip is arranged on the mainboard and is connected with any one of the signal input bus and the input end of the expander, and is connected with the first equipment and the output end of the expander. The compatible expansion device and the electronic equipment have low cost and small occupied space, can expand the external equipment when no redundant expansion interface exists, and do not influence the normal work of the equipment of the mainboard.
Description
Technical Field
The utility model belongs to the technical field of the electron, especially, relate to a compatible extension device and electronic equipment.
Background
For high-speed signal equipment, a compatible extension scheme is realized by using a reserved HUB (HUB) or Bridge (Bridge), but the HUB and the Bridge are expensive, high in cost and need to occupy Printed Circuit Board (PCB) space, and other device layouts are affected.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a compatible extension device and electronic equipment, through set up switch chip on the mainboard, when connecting the expansion board, switch chip with a signal input bus and an equipment respectively with the input and the output switch-on of expansion board, with high costs when solving external expansion equipment, problem that occupation space is big.
An embodiment of the utility model provides a compatible extension device, include:
the system comprises a main board, an expansion board and a switch chip;
the main board is provided with a processor, a first device and a plurality of second devices, and each second device is connected with a signal input bus of the processor;
the expansion board is provided with an expander, and the expander is provided with a plurality of expansion ends used for connecting a plurality of expansion devices;
the switch chip is arranged on the mainboard, and is connected with any one of the signal input bus and the input end of the expander, and is connected with the first equipment and the output end of the expander.
Furthermore, a first end of the switch chip is connected to the signal input bus, a second end of the switch chip is connected to the first device, a third end of the switch chip is connected to the input end of the expander, and a fourth end of the switch chip is connected to the output end of the expander;
the switch chip comprises a switch and a path selection module, wherein the switch is used for connecting the input end of the expander with the signal input bus under the action of the path selection module and connecting the output end of the expander with the first equipment.
Furthermore, the fifth end and the sixth end of the switch chip are connected to two ends of a loop back path, and when the loop back path is connected, the switch is disconnected from the input end and the output end of the expansion board under the action of the path selection module.
Furthermore, the switches are two single-pole double-throw digital switches, namely a first single-pole double-throw switch and a second single-pole double-throw switch;
the fixed end of the first single-pole double-throw switch is connected with the output end of a signal input bus on the mainboard, the signal input bus is connected with the first equipment on the mainboard, and the two movable ends of the first single-pole double-throw switch are respectively connected with one end of the loop path and the input end of the expander;
and the fixed end of the second single-pole double-throw switch is connected with the first equipment on the mainboard, and the two movable ends of the second single-pole double-throw switch are respectively connected with the other end of the loop-back passage and the output end of the expander.
Further, the main board further comprises a logic circuit for sending a high level signal or a low level signal to the path selection module to control the path selection module to switch on or off the connection between the expander and the main board; the path selection module is connected with the logic circuit.
Further, the path selection module simultaneously controls the first single-pole double-throw switch to switch on the input end of the expander according to the high-level signal, and the second single-pole double-throw switch switches on the output end of the expander to switch on the input end of the expander and the signal input bus and switch on the output end of the expander and the first device.
Further, the path selection module simultaneously controls the first single-pole double-throw switch to switch on one end of the loop-back path according to the low-level signal, and the second single-pole double-throw switch switches on the other end of the loop-back path, so as to switch on the loop-back path with the signal input bus and the first device.
Further, the device also comprises a flexible circuit board; and the output end of the switch chip is connected with the input end and the output end of the expander through the connector of the flexible circuit board.
Furthermore, the path selection module comprises a selection pin, the selection pin is connected with one end of a resistor, the other end of the resistor is grounded, and the selection pin is also connected with a power supply.
The embodiment of the utility model provides an electronic equipment is still provided, including foretell compatible extension device.
The embodiment of the utility model provides a compatible extension device, there are a switch chip, a treater, a first equipment and a plurality of second equipment on the mainboard, these a plurality of second equipment all connect the signal input bus of treater, each equipment on the mainboard is connected to the input of this switch chip, the input and the output of expansion board are connected to the output of this switch chip, switch chip switches on arbitrary signal input bus and the input of expander, and switch on the output of first equipment and expander, based on the above-mentioned structure, after the signal that the mainboard was sent is received to the input of this expander, the output of this expander simultaneously exported a signal to the equipment of being occupied the interface by this expansion board, a plurality of expansion ends of this expander can external a plurality of expansion equipment, thus the aforesaid can be when the mainboard does not have unnecessary interface, this compatible extension device is when realizing external a plurality of expansion equipment, make the equipment of the occupied interface on the mainboard can normal use to need not to set up components and parts such as HuB and Bridge on the mainboard, reduce cost reduces occupation space.
Drawings
Fig. 1 is a schematic structural diagram of a compatible extension device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a compatible expansion device provided in an embodiment of the present invention when the expansion board is not connected.
Fig. 3 is a schematic structural diagram of the present invention, in which a plurality of first devices are connected to a processor in a motherboard of the compatible extension device.
Fig. 4 is a schematic diagram of a connector connection and circuit structure of the switch chip and the flexible circuit board in the compatible expansion device provided by the embodiment of the present invention.
Fig. 5 is a schematic diagram of a connection and circuit structure between a connector of a flexible printed circuit board and an expansion board in a compatible expansion device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a compatible expansion device provided in an embodiment of the present invention when connecting an expansion board, fig. 2 is a schematic structural diagram of a compatible expansion device provided in an embodiment of the present invention when not connecting an expansion board, the device can be applied to a motherboard of a device to be expanded without occupying an interface of the motherboard for expansion, and in consideration of compatibility, after the expansion board is connected, all devices on the motherboard can still be normally used. The device includes:
a main board 10, an expansion board 20 and a switch chip 30;
the main board 10 has a processor (CPU) 11, a first device 50 and a plurality of second devices 40.
The plurality of second devices 40 are connected to a signal input bus of the processor 11, which may be a high-speed signal input bus, and the second devices 40 are also on the motherboard 10, which is a Printed Circuit Board (PCB) 10. The processor 11, the first device 50, the second devices 40, and the like on the motherboard 10 are all mounted on the motherboard 10 according to the prior art.
Fig. 1 shows only one second device 40 in connection with the processor 11. To more clearly show the connection relationship between the processor 11 and the plurality of second devices 40, referring to fig. 3, fig. 3 shows two second devices 40 connected to the processor 11, and correspondingly, the two second devices 40 are respectively connected to the high-speed signal input buses HS _ LANE _ IN1 and HS _ LANE _ IN2 of the processor 11. Similarly, a plurality of second devices 40 are also connected to the processor 11, and the n second devices 40 are connected to the high-speed signal input buses HS _ LANE _ IN1 and HS _ LANE _ IN2 … … HS _ LANE _ INn of the processor 11, respectively.
Further, the device type, model, and specification of the first device 50 may be the same as the second device 40.
The expansion board 20 has an expander 21, and the expander 21 is specifically an expansion chip. The Expander 21 has an input terminal, an output terminal, and a plurality of expansion terminals for externally connecting a plurality of expandable devices, and the Expander 21 may be a HUB interface, or a Bridge interface, or an Expander interface.
The switch chip 30 is disposed on the motherboard 10, and the switch chip 30 is specifically a mux (multiplexer) ic (integrated circuit), and the model thereof may be PI2PCIE2412 ZHEX.
Further, any one of the signal input buses IN the processor 11 may be connected to the first end a1 of the switch chip 30, and as shown IN fig. 3, the first end a1 of the switch chip 30 is connected to the high-speed signal input bus HS _ LANE _ IN1, but may be connected to another bus such as the high-speed signal input bus HS _ LANE _ IN 2. The second terminal a2 of the switch chip 30 is connected to the first device 50. The third terminal C1 of the switch chip 30 is connected to the expander 21 via a signal output bus, which may be a high-speed signal output bus HS _ LANE _ OUT. The expander 21 is connected to the fourth terminal C2 of the switching chip 30 via an expansion input signal bus HUB _ LANE _ IN. That is, the switch chip 30 turns on the signal input bus HS _ LANE _ IN1 and the input terminal of the expander 21, and turns on the first device 50 and the output terminal of the expander 21.
Further, the output end of the switch chip 30 is further connected to a loop path 70, and the switch, under the action of the path selection module 60, can also connect two ends of the loop path 70 to the high-speed signal input bus and the first device 50, respectively. Specifically, the fifth terminal B1 of the switch chip 30 is connected to one end of the loop-back path 70, and the sixth terminal B2 is connected to the other end of the loop-back path 70. Therefore, when the external expansion equipment is not needed, the normal work of each equipment on the mainboard is not influenced, and the compatible expansion device can conveniently work in a mode without the external expansion equipment and a mode with the external expansion equipment through switching of the switch.
IN the compatible expansion device, the processor 11 transmits a first input signal to the switch chip 30 through the high-speed signal input bus HS _ LANE _ IN, and when the external expansion board 20 is not connected, the switch turns on the a1-B1 path and the a2-B2 path, and the first input signal is returned to the switch chip 30 through the loop path 70 and then input to the first device 50; when the external expansion board 20 is connected, under the control of the path selection module 70, the switch disconnects the a1-B1 path and the a2-B2 path, and connects the a1-C1 path and the a2-C2 path, the first input signal passes through the a1-C1 path and is input as a first output signal to the input terminal of the expander 21 IN the expansion board 20 through the high-speed signal output bus HS _ LANE _ OUT, the output terminal of the expander 21 outputs a second input signal, and the second input signal passes through the expansion input signal bus HUB _ LANE _ IN and is supplied to the first device 50 through the a2-C2 path.
The path selection module 70 implements path selection by the logic level of a selection signal. Namely: when the signal is a low level signal, two paths A1-B1 and A2-B2 are switched on; when the signal is a high level signal, two paths A1-C1 and A2-C2 are switched on.
The expander 21 is an expansion chip and can realize an expansion function from 1 to N.
It should be noted that the switch can only turn on the high-speed signal input bus HS _ LANE _ IN and the first device 50 to the loopback path 70 or to the input and output of the expander 21 at the same time. That is, the pair of passages A1-B1 and A2-B2, along with the pair of passages A1-C1 and A2-C2, only simultaneously open one of the two pairs of passages.
Compatible extension device in above-mentioned embodiment is for example 2 equipment, and wherein 1 equipment passes through treater switch-on switch chip the utility model discloses in, the quantity of unlimited equipment, connection relation and theory of operation are the same, only need correspond increase switch's quantity can, as long as the interface that satisfies one of them equipment is occupied, the output of expander is connected in this equipment and the expansion board when unable transmission signal to output through this expansion board obtains input signal, does not influence such principle of normal work, all belongs to the utility model discloses protection range.
The embodiment of the utility model provides a compatible extension device, there are a switch chip, a treater, a first equipment and a plurality of second equipment on the mainboard, these a plurality of second equipment all connect the signal input bus of treater, each equipment on the mainboard is connected to the input of this switch chip, the input and the output of expansion board are connected to the output of this switch chip, switch chip switches on arbitrary signal input bus and the input of expander, and switch on the output of first equipment and expander, based on the above-mentioned structure, after the signal that the mainboard was sent is received to the input of this expander, the output of this expander simultaneously exported a signal to the equipment of being occupied the interface by this expansion board, a plurality of expansion ends of this expander can external a plurality of expansion equipment, thus the aforesaid can be when the mainboard does not have unnecessary interface, this compatible extension device is when realizing external a plurality of expansion equipment, make the equipment of the occupied interface on the mainboard can normal use to need not to set up components and parts such as HuB and Bridge on the mainboard, reduce cost reduces occupation space.
The compatible expansion device is further described below with reference to specific circuits of the compatible expansion device, and the compatible expansion device further includes a flexible circuit board (not shown in the figure), and the output terminal of the switch chip 30 is connected to the input terminal and the output terminal of the expander 21 in the expansion board 20 through the connector 80 of the flexible circuit board. Referring to fig. 3 and 4, fig. 3 is a circuit diagram illustrating the connection between the switch chip 30 and the connector 80 of the flexible printed circuit board, and fig. 4 is a circuit diagram illustrating the connection between the connector 80 of the flexible printed circuit board and the expansion board 20. With reference to fig. 1 and fig. 2, further, the switches of the switch chip 30 are two single-pole double-throw digital switches, namely a first single-pole double-throw switch 31 and a second single-pole double-throw switch 32, and each single-pole double-throw digital switch has a logic moving end (called a moving end for short) and two logic non-moving ends (called a non-moving end for short).
The fixed end of the first single-pole double-throw switch 31 is connected to an output end of a processor 11 (not shown in fig. 3 and 4) on the motherboard 10, the processor 11 is connected to the pin 2, the pin 3, the pin 6 and the pin 7 of the switch chip 30, and the sent signals are specifically four paths of signals of PCIE _ TXP _ LAN0, PCIE _ TXN _ LAN0, PCIE _ RXP _ LAN0 and PCIE _ RXN _ LAN0 in fig. 3, which enter through the pin 2, the pin 3, the pin 6 and the pin 7 of the switch chip 30; the processor 11 is connected to a second device 40 (not shown in fig. 3 and 4) on the motherboard 10. Two moving ends of the first single-pole double-throw switch 31 are respectively connected to one end of the loop path 70 and an input end of the expansion board 20 (i.e. an input end of the expander 21 in the above embodiment), specifically, one end of the loop path 70 is connected to the pin 35, the pin 36, the pin 37 and the pin 38 of the switch chip 30, and is connected to one of the moving ends of the first single-pole double-throw switch 31; the input end of the expansion board 20 is connected to the pins 10, 11, 12 and 13 of the connector 80 of the flexible printed circuit board shown in fig. 4, that is, the pins 28, 29, 30 and 31 of the connector 80 of the flexible printed circuit board shown in fig. 3, and then connected to the pins 31, 32, 33 and 34 of the switch chip 30, and connected to the other movable end of the first single-pole double-throw switch 31.
The fixed end of the second single-pole double-throw switch 32 is connected to a first device 50 on the motherboard 10, the first device 50 (not shown in fig. 3 and 4) is connected to the pin 11, the pin 12, the pin 15, and the pin 16 of the switch chip 30, and the transmitted signals are DEV _ PCIE _ TXP, DEV _ PCIE _ TXN, DEV _ PCIE _ RXP, and DEV _ PCIE _ RXN in fig. 3, which enter through the pin 11, the pin 12, the pin 15, and the pin 16 of the switch chip 30. Two moving ends of the second single-pole double-throw switch 32 are respectively connected to the other end of the loop-back path 70 and an output end of the expansion board 20 (i.e., an input end of the expander 21 in the above-mentioned embodiment), the other end of the loop-back path 70 is connected to the pin 26, the pin 27, the pin 28, and the pin 29 of the switch chip 30, and is connected to one of the moving ends of the second single-pole double-throw switch 32, and an output end of the expansion board 20 is connected to the pin 18, the pin 19, the pin 20, and the pin 21 of the connector 80 of the flexible circuit board shown in fig. 4, i.e., after the pin 23, the pin 24, the pin 25, and the pin 26 of the connector 80 of the flexible circuit board shown in fig. 3 are connected to the pin 22, the pin 23, the pin 24, and the pin 25 of the switch chip 30.
When the expansion board 20 is connected to the switch chip 30, the path selection module 60 simultaneously controls the first spdt switch 31 to turn on the input terminal of the expansion board 20, the second spdt switch 32 to turn on the output terminal of the expansion board 20 to turn on the input terminal of the expansion board 20 and the high-speed signal input bus HS _ LANE _ OUT, and turn on the output terminal of the expansion board 20 and the first device 50.
When the expansion board 20 and the switch chip 30 are disconnected, the path selection module 60 simultaneously controls the first spdt switch 31 to turn on one end of the loop-back path 70, and the second spdt switch 32 turns on the other end of the loop-back path 70, so as to turn on the loop-back path 70 with the processor 11 and the first device 50.
Further, the main board 10 further includes a logic circuit (not shown in the figure), the path selection module 60 is connected to the logic circuit, the logic circuit sends a high level signal to the path selection module 60, and the path selection module 60 is configured to control the first spdt switch 31 to turn on the input terminal of the expansion board 20 and control the second spdt switch 32 to turn on the output terminal of the expansion board 20 according to the high level signal. The logic circuit is used for controlling the connection between the expansion board 20 and the switch chip 30, that is, the connection between the expander 21 and the switch chip 30, by sending a high level signal.
The logic circuit sends a low level signal to the path selection module 60, and the path selection module 60 is configured to control the first spdt switch 31 to switch on one end of the loop back path 70 and control the second spdt switch 32 to switch on the other end of the loop back path 70 according to the low level signal. The logic circuit is also used for controlling the extension board 20 to be disconnected from the switch chip 30, that is, the extender 21 is disconnected from the switch chip 30, by sending a low level signal.
As shown in fig. 4, the path selection module 60 (not shown in fig. 3 and 4) includes a selection pin 9, the selection pin 9 is connected to one end of a resistor R, the other end of the resistor R is grounded, and the selection pin 9 is further connected to a power supply + V3P3S _ PCIE _.
In this embodiment, the signal of the default pin 9 of the path selection module has a pull-down resistor, which is a low level signal, so that the default two paths a1-B1 and a2-B2 are connected, and the signal sent by the processor returns to the second device through the loop-back path; when the expansion board is externally connected, the signal of the selection pin 9 is pulled high to be a high level signal, the path selection module cuts off two paths of A1-B1 and A2-B2, and switches on two paths of A1-C1 and A2-C2, and the signal sent by the processor enters the expansion board and is output to the second device through the expansion board.
The circuit configurations of the other parts of the compatible extension device in this example are shown in fig. 3 and 4, based on the contents in fig. 3 and 4.
The embodiment of the utility model provides a still provide an electronic equipment, this electronic equipment can be equipment such as PC, embeds compatible extension device in above-mentioned embodiment. Reference is made in detail to the description of the embodiments above.
Above is right the description of the compatible extension device that the utility model provides, to the technical staff in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and application scope, to sum up, this description content should not be understood as right the utility model discloses a restriction.
Claims (10)
1. A compatibility extension apparatus, the apparatus comprising:
the system comprises a main board, an expansion board and a switch chip;
the main board is provided with a processor, a first device and a plurality of second devices, and each second device is connected with a signal input bus of the processor;
the expansion board is provided with an expander, and the expander is provided with a plurality of expansion ends used for connecting a plurality of expansion devices;
the switch chip is arranged on the mainboard, and is connected with any one of the signal input bus and the input end of the expander, and is connected with the first equipment and the output end of the expander.
2. The apparatus of claim 1, wherein a first terminal of the switch chip is connected to the signal input bus, a second terminal of the switch chip is connected to the first device, a third terminal of the switch chip is connected to the input terminal of the expander, and a fourth terminal of the switch chip is connected to the output terminal of the expander;
the switch chip comprises a switch and a path selection module, wherein the switch is used for connecting the input end of the expander with the signal input bus under the action of the path selection module and connecting the output end of the expander with the first equipment.
3. The apparatus of claim 2, wherein the fifth terminal and the sixth terminal of the switch chip are connected to two terminals of a loop path, and the switch is disconnected from the input terminal and the output terminal of the expansion board by the path selection module to connect the loop path.
4. The apparatus of claim 3, wherein the switches are two single pole double throw digital switches, a first single pole double throw switch and a second single pole double throw switch, respectively;
the fixed end of the first single-pole double-throw switch is connected with the output end of a signal input bus on the mainboard, the signal input bus is connected with the first equipment on the mainboard, and the two movable ends of the first single-pole double-throw switch are respectively connected with one end of the loop path and the input end of the expander;
and the fixed end of the second single-pole double-throw switch is connected with the first equipment on the mainboard, and the two movable ends of the second single-pole double-throw switch are respectively connected with the other end of the loop-back passage and the output end of the expander.
5. The apparatus of claim 4, further comprising logic circuitry on the motherboard for sending a high signal or a low signal to the path selection module to control the path selection module to turn on or off the connection of the expander to the motherboard; the path selection module is connected with the logic circuit.
6. The apparatus of claim 5, wherein the path selection module simultaneously controls the first SPDT switch to turn on the input of the expander, the second SPDT switch to turn on the output of the expander to turn on the input of the expander and the signal input bus, and the output of the expander and the first device according to the high level signal.
7. The apparatus of claim 5, wherein the path selection module simultaneously controls the first SPDT switch to turn on one end of the loopback path and the second SPDT switch to turn on the other end of the loopback path according to the low level signal to turn on the loopback path with the signal input bus and the first device.
8. The device of claim 6 or 7, further comprising a flexible circuit board; and the output end of the switch chip is connected with the input end and the output end of the expander through the connector of the flexible circuit board.
9. The apparatus of claim 8, wherein the path selection module comprises a selection pin, the selection pin is connected to one end of a resistor, the other end of the resistor is connected to ground, and the selection pin is further connected to a power supply.
10. An electronic device, comprising: a compatible extension device according to any one of claims 1 to 9.
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| CN201921296149.3U CN209980238U (en) | 2019-08-12 | 2019-08-12 | Compatible expansion device and electronic equipment |
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| CN201921296149.3U CN209980238U (en) | 2019-08-12 | 2019-08-12 | Compatible expansion device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113050767A (en) * | 2021-03-30 | 2021-06-29 | 联想(北京)有限公司 | Expansion slot channel distribution method and device, electronic equipment and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113050767A (en) * | 2021-03-30 | 2021-06-29 | 联想(北京)有限公司 | Expansion slot channel distribution method and device, electronic equipment and medium |
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