CN220254522U - Vehicle-mounted Ethernet and common Ethernet communication switching circuit and Ethernet communication system - Google Patents
Vehicle-mounted Ethernet and common Ethernet communication switching circuit and Ethernet communication system Download PDFInfo
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- CN220254522U CN220254522U CN202322031761.0U CN202322031761U CN220254522U CN 220254522 U CN220254522 U CN 220254522U CN 202322031761 U CN202322031761 U CN 202322031761U CN 220254522 U CN220254522 U CN 220254522U
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Abstract
The utility model belongs to the field of automotive Ethernet data interaction, and in particular relates to a data transmission and interaction circuit and an Ethernet communication system which can use different Ethernet ports according to the type of a network interface under different scenes, wherein a vehicle-mounted Ethernet and common Ethernet communication switching circuit comprises: the signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signals of the vehicle-mounted Ethernet and the common Ethernet, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module, so that the problem that the data messages of two Ethernet networks can be switched and used according to the needs under the same equipment is solved, and the complicated step of hardware switching when the individual media switching medium equipment is used for bridging and forwarding data is avoided.
Description
Technical Field
The utility model belongs to the field of automotive Ethernet data interaction, and particularly relates to a data transmission and interaction circuit and an Ethernet communication system which can use different Ethernet ports according to the type of a network interface under different scenes.
Background
At present, when the vehicle-mounted Ethernet and the common Ethernet interact data, single media conversion medium equipment is generally used for bridging and forwarding the data, under the condition, the port characteristic of the Ethernet can be limited, and the common Ethernet and the vehicle-mounted Ethernet can not be switched and used independently at will under different application scenes.
In order to solve the problem that the data messages of the two Ethernet networks can be switched and used at will under the same equipment, a vehicle-mounted Ethernet and common Ethernet communication switching circuit and an Ethernet communication system are required to be designed.
Disclosure of Invention
In order to solve the technical problems mentioned in the background art, the utility model provides a vehicle-mounted Ethernet and common Ethernet communication switching circuit and an Ethernet communication system.
The utility model provides a vehicle-mounted Ethernet and common Ethernet communication switching circuit, which comprises:
the signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signals of the vehicle-mounted Ethernet and the common Ethernet, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and
the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module.
According to the utility model, a switching circuit for communication between a vehicle-mounted Ethernet and a common Ethernet is provided, wherein for each multiplexing chip
The corresponding multiplexing chip is used for switching Ethernet data input and output signals of the vehicle-mounted Ethernet and the common Ethernet;
the corresponding multiplexing chip is used for switching data control input and output signals of the vehicle-mounted Ethernet and the common Ethernet; and
the corresponding multiplexing chip is used for switching data clock input and output signals of the vehicle-mounted Ethernet and the common Ethernet.
According to the communication switching circuit of the vehicle-mounted Ethernet and the common Ethernet, the vehicle-mounted Ethernet and the common Ethernet both adopt RGMII interfaces.
According to the communication switching circuit of the vehicle-mounted Ethernet and the common Ethernet, the vehicle-mounted Ethernet and the common Ethernet both adopt MII interfaces.
According to the communication switching circuit of the vehicle-mounted Ethernet and the common Ethernet, which are provided by the utility model, the vehicle-mounted Ethernet and the common Ethernet both adopt RMII interfaces.
According to the communication switching circuit of the vehicle-mounted Ethernet and the common Ethernet, the vehicle-mounted Ethernet and the common Ethernet both adopt GMII interfaces.
The utility model also provides an Ethernet communication system, which comprises:
the system comprises a vehicle-mounted Ethernet PHY module, a common Ethernet PHY module, an MCU module and a signal switching logic control module; wherein the method comprises the steps of
The signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signal ports of the vehicle-mounted Ethernet PHY module and the common Ethernet PHY module, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and
the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module. According to the utility model, there is provided an Ethernet communication system, wherein for each multiplexing chip, wherein
The corresponding multiplexing chip is used for switching Ethernet data input and output signals of the vehicle-mounted Ethernet and the common Ethernet;
the corresponding multiplexing chip is used for switching data control input and output signals of the vehicle-mounted Ethernet and the common Ethernet; and
the corresponding multiplexing chip is used for switching data clock input and output signals of the vehicle-mounted Ethernet and the common Ethernet.
According to the ethernet communication system provided by the present utility model, the interface form of the vehicle-mounted ethernet PHY module and the common ethernet PHY module includes: RGMII interface, MII interface form, RMII interface form, and GMII interface form.
According to the Ethernet communication system provided by the utility model, the vehicle-mounted Ethernet PHY module is a JL3113 chip, and the common Ethernet PHY module adopts the JL2121 chip.
The utility model has the beneficial effects that the vehicle-mounted Ethernet and common Ethernet communication switching circuit and the Ethernet communication system respectively connect the relevant signals of the vehicle-mounted Ethernet and the common Ethernet by utilizing two channel ends in each multiplexing chip through a plurality of multiplexing chips in the signal switching logic control module, and the output ends in each multiplexing chip are respectively connected with the corresponding communication input ends of the MCU module; and the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module, so that the problem that the data messages of two Ethernet networks can be switched and used according to the needs under the same equipment is solved, and the complicated step of hardware switching when the individual media conversion medium equipment is used for bridging and forwarding data is avoided.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic block diagram of an Ethernet communication system of the utility model;
fig. 2 (a) to fig. 2 (f) are specific circuit diagrams of each multiplexing chip in the switching circuit of the vehicle-mounted ethernet and the normal ethernet communication, respectively;
fig. 3 (a) to 3 (c) are specific circuit diagrams of the MCU module.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
As shown in fig. 1, the present embodiment provides a vehicle-mounted ethernet and common ethernet communication switching circuit applied to an ethernet communication system, which specifically includes:
the signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signals of the vehicle-mounted Ethernet and the common Ethernet, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and the channel switching ends of the multiplexing chips are electrically connected with the channel selection control end of the MCU module.
Specifically, as shown in fig. 2 (a) to 2 (f), for each multiplexing chip, a specific embodiment in which the output end in each multiplexing chip is connected to the corresponding communication input end of the MCU module respectively includes:
the corresponding multiplexing chip is used for switching Ethernet data input and output signals of the vehicle-mounted Ethernet and the common Ethernet;
the corresponding multiplexing chip is used for switching data control input and output signals of the vehicle-mounted Ethernet and the common Ethernet; and the corresponding multiplexing chip is used for switching data clock input and output signals of the vehicle-mounted Ethernet and the common Ethernet.
In some embodiments, the vehicle ethernet and the normal ethernet both use RGMII interfaces, specifically as shown in fig. 2 (a) to fig. 2 (f), where the multiplexing chip uses TMUX136MRSER, for RGMII interfaces:
t1_rgmii_txd0/t1_rgmii_txd1/t1_rgmii_txd2/t1_rgmii_txd3 is an ethernet data output signal of the on-vehicle ethernet interface;
t1_rgmii_rxd0/t1_rgmii_rxd1/t1_rgmii_rxd2/t1_rgmii_rxd3 is an ethernet data input signal of the vehicle-mounted ethernet interface;
t1_rgmii_txc is a data control output signal of the vehicle-mounted ethernet interface;
t1_rgmii_rxc is a data control input signal of the vehicle-mounted ethernet interface;
t1_rgmii_txclk is a data clock output signal of the vehicle-mounted ethernet interface;
t1_rgmii_rxclk is the data clock input signal of the in-vehicle ethernet interface.
General ethernet interface signal definition specification:
T_RGMII_TXD0/T_RGMII_TXD1/T_RGMII_TXD2/T_RGMII_TXD3 is an Ethernet data output signal of a common Ethernet interface;
T_RGMII_RXD0/T_RGMII_RXD1/T_RGMII_RXD2/T_RGMII_RXD3 is an Ethernet data input signal of a common Ethernet interface;
t_rgmii_txclk is the data clock output signal of the normal ethernet interface;
t_rgmii_rxclk is the data clock input signal of the normal ethernet interface;
t_rgmii_txc is a data control output signal of a normal ethernet interface;
t_rgmii_rxc is a data control input signal of a normal ethernet interface.
RGMII_SEL is that the channel switching ends are electrically connected with the channel selection control end of the MCU module.
In some embodiments, the in-vehicle ethernet and the normal ethernet both employ MII interfaces.
In some embodiments, the in-vehicle ethernet and the regular ethernet both employ RMII interfaces.
In some embodiments, the on-board ethernet and the regular ethernet both employ GMII interfaces.
For the connection modes of the MII interface, the RMII interface, and the GMII interface with respect to the RGMII interface, those skilled in the art can implement connection of the MII interface, the GMII interface, and the RMII interface according to the circuit description of the RGMII interface in this embodiment, which is not described in detail in this embodiment.
As shown in fig. 1, the ethernet communication system provided in this embodiment includes:
the system comprises a vehicle-mounted Ethernet PHY module, a common Ethernet PHY module, an MCU module and a signal switching logic control module; the signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signal ports of the vehicle-mounted Ethernet PHY module and the common Ethernet PHY module, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and the channel switching ends of the multiplexing chips are electrically connected with the channel selection control end of the MCU module.
The in-vehicle ethernet PHY module in this embodiment may be, but not limited to, JL3113, and the normal ethernet PHY module may be, but not limited to, JL2121. As shown in fig. 3 (a) to 3 (c), the MCU module may, but is not limited to, use CH569W, which contains MAC inside.
In some embodiments, the interface form of the in-vehicle ethernet PHY module and the generic ethernet PHY module includes: RGMII interface, MII interface form, RMII interface form, and GMII interface form.
Taking an RGMII interface connection mode as an example for illustration in combination with fig. 2 (a) to 2 (f), for each multiplexing chip, the corresponding multiplexing chip is used for switching ethernet data input and output signals of the vehicle ethernet and the normal ethernet; the corresponding multiplexing chip is used for switching data control input and output signals of the vehicle-mounted Ethernet and the common Ethernet; and the corresponding multiplexing chip is used for switching the input and output signals of the data clocks of the vehicle-mounted Ethernet and the common Ethernet, and the embodiment is specifically described.
For the Ethernet-hundred megabits of the vehicle, the protocol adopts IEEE 802.3bw or Ethernet-giga of the vehicle, and the protocol adopts IEEE 802.3bp; and the normal (standard) ethernet-hundred megabits, the protocol employs IEEE 802.3u, or the normal (standard) ethernet-gigabit, the protocol employs IEEE 802.3ab.
For the connection modes of the MII interface, the RMII interface and the GMII interface with respect to the RGMII interface, those skilled in the art can implement connection of the MII interface, the RMII interface and the GMII interface according to the circuit description of the RGMII interface in this embodiment, which is not described in detail in this embodiment.
In summary, the vehicle-mounted ethernet and common ethernet communication switching circuit and the ethernet communication system respectively connect related signals of the vehicle-mounted ethernet and the common ethernet through a plurality of multiplexing chips in the signal switching logic control module by using two channel ends in each multiplexing chip, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module, so that the problem that the data messages of two Ethernet networks can be switched and used according to the needs under the same equipment is solved, and the complicated step of hardware switching when the individual media conversion medium equipment is used for bridging and forwarding data is avoided.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A vehicle-mounted ethernet and common ethernet communication switching circuit, comprising:
the signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signals of the vehicle-mounted Ethernet and the common Ethernet, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and
the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module.
2. The on-board Ethernet and common Ethernet communication switching circuit of claim 1, wherein,
for each multiplexing chip, wherein
The corresponding multiplexing chip is used for switching Ethernet data input and output signals of the vehicle-mounted Ethernet and the common Ethernet;
the corresponding multiplexing chip is used for switching data control input and output signals of the vehicle-mounted Ethernet and the common Ethernet; and
the corresponding multiplexing chip is used for switching data clock input and output signals of the vehicle-mounted Ethernet and the common Ethernet.
3. The on-board ethernet and plain ethernet communication switching circuit according to claim 2, wherein,
the vehicle-mounted Ethernet and the common Ethernet both adopt RGMII interfaces.
4. The on-board ethernet and plain ethernet communication switching circuit according to claim 2, wherein,
the vehicle-mounted Ethernet and the common Ethernet both adopt MII interfaces.
5. The on-board ethernet and plain ethernet communication switching circuit according to claim 2, wherein,
the vehicle-mounted Ethernet and the common Ethernet both adopt RMII interfaces.
6. The on-board ethernet and plain ethernet communication switching circuit according to claim 2, wherein,
the vehicle-mounted Ethernet and the common Ethernet both adopt GMII interfaces.
7. An ethernet communication system, comprising:
the system comprises a vehicle-mounted Ethernet PHY module, a common Ethernet PHY module, an MCU module and a signal switching logic control module; wherein the method comprises the steps of
The signal switching logic control module comprises a plurality of multiplexing chips, wherein two channel ends in each multiplexing chip are respectively connected with related signal ports of the vehicle-mounted Ethernet PHY module and the common Ethernet PHY module, and output ends in each multiplexing chip are respectively connected with corresponding communication input ends of the MCU module; and
the channel switching end of each multiplexing chip is electrically connected with the channel selection control end of the MCU module.
8. The Ethernet communication system of claim 6, wherein,
for each multiplexing chip, wherein
The corresponding multiplexing chip is used for switching Ethernet data input and output signals of the vehicle-mounted Ethernet and the common Ethernet;
the corresponding multiplexing chip is used for switching data control input and output signals of the vehicle-mounted Ethernet and the common Ethernet; and
the corresponding multiplexing chip is used for switching data clock input and output signals of the vehicle-mounted Ethernet and the common Ethernet.
9. The Ethernet communication system of claim 7, wherein,
the interface forms of the vehicle-mounted Ethernet PHY module and the common Ethernet PHY module comprise: RGMII interface, MII interface form, RMII interface form, and GMII interface form.
10. The Ethernet communication system of claim 7, wherein,
the vehicle-mounted Ethernet PHY module is a JL3113 chip, and the common Ethernet PHY module adopts a JL2121 chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322031761.0U CN220254522U (en) | 2023-07-31 | 2023-07-31 | Vehicle-mounted Ethernet and common Ethernet communication switching circuit and Ethernet communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322031761.0U CN220254522U (en) | 2023-07-31 | 2023-07-31 | Vehicle-mounted Ethernet and common Ethernet communication switching circuit and Ethernet communication system |
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| CN220254522U true CN220254522U (en) | 2023-12-26 |
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| CN202322031761.0U Active CN220254522U (en) | 2023-07-31 | 2023-07-31 | Vehicle-mounted Ethernet and common Ethernet communication switching circuit and Ethernet communication system |
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