CN206294300U - A kind of set CARPLAY communications and the device of USB transmission - Google Patents
A kind of set CARPLAY communications and the device of USB transmission Download PDFInfo
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- CN206294300U CN206294300U CN201621253620.7U CN201621253620U CN206294300U CN 206294300 U CN206294300 U CN 206294300U CN 201621253620 U CN201621253620 U CN 201621253620U CN 206294300 U CN206294300 U CN 206294300U
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- usb
- interface
- end points
- carplay
- usb interface
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Abstract
The utility model provides the device of a kind of set CARPLAY communications and USB transmission, including on-vehicle host and usb hub box, and cpu chip and the 3rd USB end points are provided with on-vehicle host, and the 3rd USB end points connects the first USB interface；The 4th USB end points in usb hub box is communicated with the 3rd USB end points in on-vehicle host, 4th USB end points is also connected with the 6th USB interface in usb hub chip, the 4th USB interface in the first USB interface connection micro-control unit in usb hub chip, the first choice end of the 5th USB interface connection MUX switches in micro-control unit, secondary USB interface in second selection end connection usb hub chip of MUX switches, the control end of MUX switches connects a USB end points, the 3rd USB interface in the 2nd USB end points connection usb hub chip.The utility model switchs switching connection line by micro-control unit controls MUX, will not destroy the host-guest architecture of USB HUB, realizes the expanded function of HUB.
Description
Technical field
The utility model is related to CARPLAY to communicate and USB transmission technical field, and in particular to a kind of set CARPLAY leads to
The device of news and USB transmission.
Background technology
In order to realize CARPLAY functions, at present in hardware view, it is necessary to which the USB downstream for being provided with a support OTG function connects
Mouthful, such as, for vehicle-mounted audio host, if its USB downstream for carrying interface does not support OTG functions, cannot just realize
CARPLAY functions.
In the current existing solution for realizing CARPLAY functions, vehicle-mounted audio host is with a support OTG work(
The USB interface of energy, realizes CARPLAY functions, but if during external HUB, then the expanded function of HUB cannot be realized, that is,
Say, CARPLAY functions and HUB expanded functions can not coexist.
Illustrate：As shown in figure 1, on-vehicle host includes a USB end points (USB3) with OTG functions, hub
Chip HUB IC support OTG functions, but the upset of OTG is carried out between can only being fixed on USB port0 and USB port 1；Just
In the case of often, USB port 0 are upstream Interfaces, and USB port 1 and USB port 2 are downstream interfaces, when carrying out turning over for OTG
When turning, USB port 1 are changed into upstream Interface, and USB port 0 are changed into downstream interface, and USB port 2 remain as downstream interface,
In the case of so, if in 2 times insertion USB devices of USB, the equipment of the basic None- identified of vehicle-mounted audio host to USB 2.
Utility model content
The utility model provides a kind of set CARPLAY communications and the device of USB transmission, solves and is possessing CARPLAY
While communication function, the technical problem of compatible USB HUB expanded functions.
In order to solve the above-mentioned technical problem, the utility model provides the dress of a kind of set CARPLAY communications and USB transmission
Put, including on-vehicle host and usb hub box, cpu chip and the 3rd USB end points, the 3rd USB are provided with on-vehicle host
The first USB interface set in end points connection cpu chip；A USB end points, the 2nd USB are provided with the usb hub box
End points, the 4th USB end points and Universal USB hub chip, micro-control unit, MUX switches, the Universal USB hub chip
The first USB interface, secondary USB interface, the 3rd USB interface, the 6th USB interface are inside provided with, the micro-control unit is provided with
4th USB interface, the 5th USB interface；
The 4th USB end points in the usb hub box connects the 3rd USB end points communication in the on-vehicle host, institute
State the 6th USB interface that the 4th USB end points is also connected with the Universal USB hub chip, the Universal USB hub chip
The 4th USB interface in interior the first USB interface connection micro-control unit, the 5th USB interface connection MUX in micro-control unit
The first choice end of switch, the second selection end of the MUX switches connects the 2nd USB in the Universal USB hub chip
Interface, the control end of the MUX switches connects a USB end points, and the 2nd USB end points connects the Universal USB collection
The 3rd USB interface in line device chip.
Further, the 6th USB interface in the Universal USB hub chip is upstream Interface, the Universal USB collection
First set in the first USB interface, secondary USB interface, the 3rd USB interface and the cpu chip is provided with line device chip
USB interface is downstream interface.
Further, the micro-control unit is used for the connection at the first choice end for controlling MUX to switch and the second selection end
Circuit.
Further, it is described when a USB end points is not inserted into supporting the intelligent mobile terminal of CARPLAY
The connection line of micro-control unit controls MUX switches is second in the second selection end connection Universal USB hub chip
USB interface.
Further, when a USB end points is inserted with the intelligent mobile terminal and the CPU for supporting CARPLAY
Chip detection to CARPLAY ask when, the cpu chip by above-mentioned USB connection lines to the micro-control unit send cut
Connection control instruction is changed, after the micro-control unit receives the switching connection control instruction, the connecting line that the MUX is switched
Road switches to first choice end to connect the 5th USB interface in the micro-control unit.
Further, the 5th USB interface in the micro-control unit is upstream Interface, and the 4th USB interface is descending
Interface.
Yet further, the 2nd USB end points is used as downstream interface simultaneously.
Further, the Universal USB hub chip is the usb hub chip for not possessing OTG functions.
The set CARPLAY communications that the utility model is provided are opened with the device of USB transmission by micro-control unit controls MUX
Concern is changed connection line and realizes that it is in USB mode or CARPLAY mode of operations, and will not destroy the master of USB HUB
From structure, the expanded function of HUB is realized.
Brief description of the drawings
Fig. 1 is the structural representation of the existing USB HUB for realizing CARPLAY functions；
Fig. 2 is the structural representation of the utility model set CARPLAY communications and the device of USB transmission.
Specific embodiment
Implementation method of the present utility model is specifically illustrated below in conjunction with the accompanying drawings, and accompanying drawing is only for reference and explanation is used, not structure
The limitation of paired the utility model scope of patent protection.
As shown in Fig. 2 the utility model embodiment provides the device of a kind of set CARPLAY communications and USB transmission, including
On-vehicle host HEADUNIT and USB HUB hub boxes, are provided with CPU IC chips and the 3rd USB end points USB in on-vehicle host
3, the first USB interface USB Port 1 set in the connections of the 3rd USB end points USB 3 cpu chip；The usb hub
A USB end points USB 1, the 2nd USB end points USB 2, the 4th USB end points USB 0 and Universal USB hub core are provided with box
Piece USB NORMAL HUB IC, micro-control unit MCU, MUX switch, first is provided with the Universal USB hub chip
USB interface USB Port 1, secondary USB interface USB Port 2, the 3rd USB interface USB Port 3, the 6th USB interface USB
Port 0, the micro-control unit MCU is provided with the 4th USB interface USB Port 4, the 5th USB interface USB Port 5；
The 3rd USB end points that the 4th USB end points USB 0 in the usb hub box is connected in the on-vehicle host leads to
News USB 3, the 4th USB end points USB 0 are also connected with the 6th USB interface USB in the Universal USB hub chip
Port 0, in the connections of the first USB interface USB Port 1 micro-control unit MCU in the Universal USB hub chip the
Four USB interface USB Port 4, the first choosing of the connection MUX switches of the 5th USB interface USB Port 5 in micro-control unit MCU
End CH1 is selected, the second selection end CH2 of the MUX switches connects the secondary USB interface USB in the Universal USB hub chip
Port 2, the control end CON of the MUX switches connects the USB end points USB 1, and the 2nd USB end points USB 2 connects
Meet the 3rd USB interface USB Port 3 in the Universal USB hub chip.
In the present embodiment, the 6th USB interface USB Port 0 in the Universal USB hub chip connect for up
Mouthful, the first USB interface USB Port 1 for setting in the Universal USB hub chip, secondary USB interface USB Port 2,
The the first USB interface USB Port 1 set in 3rd USB interface USB Port 3 and the cpu chip are downstream interface.
In the present embodiment, the micro-control unit MCU is used for the choosings of first choice end CH1 and second for controlling MUX to switch
Select the connection line of end CH2.
In the present embodiment, when the USB end points USB 1 is not inserted into supporting the intelligent mobile terminal of CARPLAY
When, the connection line of the micro-control unit controls MUX switches is the second selection end CH2 connection Universal USB hub cores
Secondary USB interface in piece.
In the present embodiment, when the USB end points USB 1 be inserted with support CARPLAY intelligent mobile terminal and
When the cpu chip detects CARPLAY requests, the cpu chip is by above-mentioned USB connection lines to the micro-control unit
MCU sends switching connection control instruction, after the micro-control unit MCU receives the switching connection control instruction, by the MUX
The connection line of switch switches to first choice end CH1 to connect the 5th USB interface USB Port in the micro-control unit MCU
5。
In the present embodiment, the 5th USB interface USB Port 5 in the micro-control unit MCU are upstream Interface, the
Four USB interface USB Port 4 are downstream interface.
In the present embodiment, the 2nd USB end points USB 2 is used as downstream interface simultaneously.
In the present embodiment, the Universal USB hub chip is the usb hub chip for not possessing OTG functions.
The utility model set CARPLAY is communicated and is controlled MUX to switch by micro-control unit MCU with the device of USB transmission
Carry out the switching of following two kinds of mode of operations：
USB mode:The data of the first USB end points USB 1 are connected to logical by the second selection end CH2 that MUX is switched
With the secondary USB interface USB port 2 of usb hub chip；2nd USB end points USB 2 is directly connected to the Universal USB
3rd USB interface USB port 3 of hub chip, then by the 4th USB interface USB of Universal USB hub chip
Port 0 sends on-vehicle host HEADUNIT to；
CARPLAY mode of operations：Support that the i Phone of CARPLAY is inserted into after a USB end points USB1, vehicle-mounted master
After machine HEADUNIT detects CARPLAY requests, MCU is sent instructions to by usb data, after MCU is received, switch USB
MUX is switched, and now the data channel of a USB end points USB 1 is：USB 1-MUX CH1-USB PORT 5-USB PORT 4-
USB PORT0-USB 0, finally proceed to on-vehicle host HEADUNIT, and in such a system, the USB PORT 5 of MCU are always upper
Line interface, the USB PORT 4 of MCU are always downstream interface, so avoid to destroy the host-guest architecture of HUB, so that second
USB end points USB 2 can also be used as downstream interface simultaneously.
Above disclosed is only preferred embodiment of the present utility model, it is impossible to right of the present utility model is limited with this
Protection domain, therefore the equivalent variations made according to present utility model application the scope of the claims, still belong to the model that the utility model is covered
Enclose.
Claims (8)
1. a kind of set CARPLAY communicates the device with USB transmission, including on-vehicle host and usb hub box, in on-vehicle host
It is provided with cpu chip and the 3rd USB end points, the first USB interface set in the 3rd USB end points connection cpu chip；It is special
Levy and be：
A USB end points, the 2nd USB end points, the 4th USB end points and Universal USB hub are provided with the usb hub box
Chip, micro-control unit, MUX switch, be provided with the Universal USB hub chip the first USB interface, secondary USB interface,
3rd USB interface, the 6th USB interface, the micro-control unit are provided with the 4th USB interface, the 5th USB interface；
The 4th USB end points in the usb hub box connects the 3rd USB end points communication in the on-vehicle host, and described the
Four USB end points are also connected with the 6th USB interface in the Universal USB hub chip, in the Universal USB hub chip
The 4th USB interface in first USB interface connection micro-control unit, the 5th USB interface connection MUX switches in micro-control unit
First choice end, the second selection end of MUX switch connects the secondary USB interface in the Universal USB hub chip,
The control end of the MUX switches connects a USB end points, and the 2nd USB end points connects the Universal USB hub core
The 3rd USB interface in piece.
2. set CARPLAY as claimed in claim 1 communicates the device with USB transmission, it is characterised in that：The Universal USB
The 6th USB interface in hub chip is upstream Interface, be provided with the Universal USB hub chip the first USB interface,
The first USB interface set in secondary USB interface, the 3rd USB interface and the cpu chip is downstream interface.
3. set CARPLAY as claimed in claim 1 or 2 communicates the device with USB transmission, it is characterised in that：The micro-control
Unit processed is used for the connection line at the first choice end for controlling MUX to switch and the second selection end.
4. set CARPLAY as claimed in claim 3 communicates the device with USB transmission, it is characterised in that：When described first
When USB end points is not inserted into supporting the intelligent mobile terminal of CARPLAY, the connecting line of the micro-control unit controls MUX switches
Road is the secondary USB interface that the second selection end is connected in the Universal USB hub chip.
5. set CARPLAY as claimed in claim 4 communicates the device with USB transmission, it is characterised in that：When described first
It is described when the intelligent mobile terminal and the cpu chip that USB end points is inserted with support CARPLAY detect CARPLAY requests
Cpu chip sends switching connection control instruction, the micro-control unit by above-mentioned USB connection lines to the micro-control unit
After receiving the switching connection control instruction, first choice end is switched to connect the connection line that the MUX is switched described micro-
The 5th USB interface in control unit.
6. set CARPLAY as claimed in claim 5 communicates the device with USB transmission, it is characterised in that：The microcontroller list
The 5th USB interface in unit is upstream Interface, and the 4th USB interface is downstream interface.
7. set CARPLAY as claimed in claim 6 communicates the device with USB transmission, it is characterised in that：2nd USB
End points is used as downstream interface simultaneously.
8. set CARPLAY as claimed in claim 1 communicates the device with USB transmission, it is characterised in that：The Universal USB
Hub chip is the usb hub chip for not possessing OTG functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621253620.7U CN206294300U (en) | 2016-11-18 | 2016-11-18 | A kind of set CARPLAY communications and the device of USB transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621253620.7U CN206294300U (en) | 2016-11-18 | 2016-11-18 | A kind of set CARPLAY communications and the device of USB transmission |
Publications (1)
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| CN206294300U true CN206294300U (en) | 2017-06-30 |
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ID=59100173
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621253620.7U Active CN206294300U (en) | 2016-11-18 | 2016-11-18 | A kind of set CARPLAY communications and the device of USB transmission |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108038071A (en) * | 2017-12-21 | 2018-05-15 | 深圳市沃特沃德股份有限公司 | Vehicle-mounted system USB extension method and vehicle-mounted system |
| CN109697310A (en) * | 2018-12-07 | 2019-04-30 | 天津津航计算技术研究所 | A kind of function verification method and system applied to ahb bus matrix design |
| US11176071B2 (en) | 2018-11-09 | 2021-11-16 | Cypress Semiconductor Corporation | USB signal switch circuitry using standard USB hub and method of operation the same |
-
2016
- 2016-11-18 CN CN201621253620.7U patent/CN206294300U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108038071A (en) * | 2017-12-21 | 2018-05-15 | 深圳市沃特沃德股份有限公司 | Vehicle-mounted system USB extension method and vehicle-mounted system |
| CN108038071B (en) * | 2017-12-21 | 2020-08-18 | 深圳市沃特沃德股份有限公司 | Vehicle-mounted system USB extension method and vehicle-mounted system |
| US11176071B2 (en) | 2018-11-09 | 2021-11-16 | Cypress Semiconductor Corporation | USB signal switch circuitry using standard USB hub and method of operation the same |
| CN109697310A (en) * | 2018-12-07 | 2019-04-30 | 天津津航计算技术研究所 | A kind of function verification method and system applied to ahb bus matrix design |
| CN109697310B (en) * | 2018-12-07 | 2020-07-21 | 天津津航计算技术研究所 | Function verification method and system applied to AHB bus matrix design |
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