CN209373578U - Circuit and device a kind of while that detect analog signal and digital signal - Google Patents
Circuit and device a kind of while that detect analog signal and digital signal Download PDFInfo
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- CN209373578U CN209373578U CN201920120497.9U CN201920120497U CN209373578U CN 209373578 U CN209373578 U CN 209373578U CN 201920120497 U CN201920120497 U CN 201920120497U CN 209373578 U CN209373578 U CN 209373578U
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Abstract
The utility model relates to detect the circuit and device of analog signal and digital signal simultaneously, including the pin PA1 of detection analog signal and the pin PA2 of detection digital signal are provided on MCU, MCU；PA1 is electrically connected with PA2；The utility model is the solution of the efficient high performance-price ratio provided for the demand in background technique, not only can guarantee and meets functional requirement i.e. while detecting analog signal and digital signal, but also is not required to increase cost custom chip, so that it may fast implement scheme output.
Description
Technical field
The utility model relates to signal detection technique field, more specifically to it is a kind of detect simultaneously analog signal and
The circuit and device of digital signal.
Background technique
When for unknown signaling detection, since the signal is likely to be analog signal, it is also possible to be digital signal, at this moment
Just be required to detect analog signal and digital signal simultaneously, only simultaneously detect the integrality that just can guarantee tested signal and when
Effect property finally reaches the effect for correctly responding tested signal in time；
General MCU detection analog signal can generally be realized with ADC, analog comparator etc. on the market at present, testing number
It is believed that can number be generally triggered using exterior I O interruption to realize, but analog signal and digital signal can not be detected simultaneously,
It just cannot achieve in some applications in this way and think function to be achieved, or need custom-made chip to realize, and be achieved
If cost also will increase much.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of while examining
Survey the circuit of analog signal and digital signal；
Additionally provide device that is a kind of while detecting analog signal and digital signal and one kind at the same detect analog signal and
The method of digital signal.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
Construct circuit that is a kind of while detecting analog signal and digital signal, wherein including MCU, be provided on the MCU
Detect the pin PA1 of analog signal and the pin PA2 of detection digital signal；The PA1 is electrically connected with the PA2.
Circuit that is described in the utility model while detecting analog signal and digital signal, wherein the PA1 with it is described
It is electrically connected after PA2 encapsulation by PCB trace.
Circuit that is described in the utility model while detecting analog signal and digital signal, wherein the PA1 with it is described
Electrical connection is realized to same PIN by routing when PA2 is encapsulated.
Circuit that is described in the utility model while detecting analog signal and digital signal, wherein the circuit further includes
AC-DC/DC-DC module, LDO power supply module and usb interface module；The LDO power supply module and the usb interface module are logical
VBUS is crossed to be electrically connected with the AC-DC/DC-DC module；The LDO power supply module is electrically connected with the MCU；The MCU passes through
FB is electrically connected with the AC-DC/DC-DC module；The usb interface module is connected by D+/D- with MCU.
Circuit that is described in the utility model while detecting analog signal and digital signal, wherein the usb interface module
D+ be electrically connected with the PA0 of MCU mouth, D- is electrically connected with the PA1 and the PA2.
Device that is a kind of while detecting analog signal and digital signal, according to it is above-mentioned while detection analog signal and number
The circuit of signal, wherein the circuit is provided in described device.
Method that is a kind of while detecting analog signal and digital signal detects analog signal and number letter while root is above-mentioned
Number circuit, its implementation is as follows:
Step 1: detecting that USB port has load to access, MCU controls VBUS and exports 5V, while PA0, PA1 being shorted, starting
BC1.2 detection；
Step 2:, by PA0, PA1 short circuit disconnects, while the pull down resistor of PA1 being opened, and opens after the completion of BC1.2 detection
Simulation input detection is opened, PA2 opens numeral input detection；
Step 3: starting fast charge protocol detection waits, detection is electrically charged the fast charge protocol type of equipment；
Step 4:, according to Host Command, responding host after detection fast charge agreement.
Circuit that is described in the utility model while detecting analog signal and digital signal, wherein further include step 5: inspection
After measurement equipment is extracted, testing process is reset.
Circuit that is described in the utility model while detecting analog signal and digital signal, wherein the fast charge protocol class
Type includes QC, FCP and AFC；The QC is analog signal；The FCP and AFC is digital signal.
The utility model has the beneficial effects that: the utility model is the height provided for the demand in background technique
The solution of high performance-price ratio is imitated, not only can guarantee and meet functional requirement i.e. while detecting analog signal and digital signal, but also be not required to
Increase cost custom chip, so that it may fast implement scheme output.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below in conjunction with attached drawing
And the utility model is described in further detail for embodiment, the accompanying drawings in the following description is only that the part of the utility model is implemented
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other accompanying drawings:
The circuit circuit diagram of analog signal and digital signal is detected while Fig. 1 is the utility model preferred embodiment；
The method logic flow of analog signal and digital signal is detected while Fig. 2 is the utility model preferred embodiment
Figure.
Specific embodiment
It is practical below in conjunction with this in order to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Technical solution in new embodiment carries out clear, complete description, it is clear that described embodiment is the portion of the utility model
Point embodiment, rather than whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not being paid
Every other embodiment obtained, belongs to the protection scope of the utility model under the premise of creative work.
The circuit that analog signal and digital signal are detected while the utility model preferred embodiment, as shown in Figure 1, including
The pin PA1 of detection analog signal and the pin PA2 of detection digital signal are provided on MCU3, MCU3；PA1 is electrically connected with PA2；
The utility model is the solution of the efficient high performance-price ratio provided for the demand in background technique, both can guarantee and meets
Functional requirement is while detecting analog signal and digital signal, and is not required to increase cost custom chip, so that it may fast implement scheme
Output.
Preferably, PA1 is electrically connected with after PA2 encapsulation by PCB trace, alternatively, PA1 and PA2 is arrived when encapsulating by routing
Same PIN is electrically connected to realize.
Preferably, circuit further includes AC-DC/DC-DC module 1, LDO power supply module 2 and usb interface module 4；LDO power supply
Module 2 and usb interface module 4 are electrically connected by VBUS with AC-DC/DC-DC module 1；LDO power supply module 2 and MCU3 is electrically connected
It connects；MCU3 is electrically connected by FB with AC-DC/DC-DC module 1；Usb interface module 4 is connected by D+/D- with MCU3；
AC-DC/DC-DC module is connected with LDO power supply module and usb interface module, and AC-DC/DC-DC output voltage is given to
LDO and by USB interface output be given to outside load, be combined into a discharge output circuit；
LDO power supply module is connected with MCU module, and MCU is powered by LDO, because VBUS exports high pressure sometimes, and it is general
MCU is low pressure process, so needing LDO that voltage is reduced to power to MCU；
Usb interface module is connected with MCU module, and USB is connected by D+/D- with MCU, is mainly used to fast charge agreement of shaking hands,
The desired charging voltage of AC-DC/DC-DC output charging equipment can be controlled by shaking hands fast charge agreement in this way, to realize
The effect of fast charge；
AC-DC/DC-DC module is connected with MCU module, and MCU is connected by FB with AC-DC/DC-DC, is mainly used to feed back
Control the voltage of AC-DC/DC-DC output fast charge protocol handshake.
Preferably, the PA0 mouth of the D+ and MCU3 of usb interface module 4 are electrically connected, and D- is electrically connected with PA1 and PA2.
Device that is a kind of while detecting analog signal and digital signal, according to it is above-mentioned while detection analog signal and number
The circuit of signal is provided with circuit on device.
Method that is a kind of while detecting analog signal and digital signal detects analog signal and number letter while root is above-mentioned
Number circuit, as shown in Fig. 2, its implementation is as follows:
Step 1: detecting that USB port has load to access, MCU controls VBUS and exports 5V, while PA0, PA1 being shorted, starting
BC1.2 detection；
Step 2:, by PA0, PA1 short circuit disconnects, while the pull down resistor of PA1 being opened, and opens after the completion of BC1.2 detection
Simulation input detection is opened, PA2 opens numeral input detection；
Step 3: starting fast charge protocol detection waits, detection is electrically charged the fast charge protocol type of equipment；
Step 4:, according to Host Command, responding host after detection fast charge agreement.
It preferably, further include step 5: resetting testing process after detection device extraction；
The utility model is the solution of the efficient high performance-price ratio provided for the demand in background technique, both may be used
Guarantee meets functional requirement i.e. while detecting analog signal and digital signal, and is not required to increase cost custom chip, so that it may quickly
Implementation output.
Preferably, fast charge protocol type includes QC, FCP and AFC；QC is analog signal；FCP and AFC is digital signal.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (6)
1. a kind of circuit for detecting analog signal and digital signal simultaneously, which is characterized in that including MCU, be provided on the MCU
Detect the pin PA1 of analog signal and the pin PA2 of detection digital signal；The PA1 is electrically connected with the PA2.
2. circuit that is according to claim 1 while detecting analog signal and digital signal, which is characterized in that the PA1
It is electrically connected with after PA2 encapsulation by PCB trace.
3. circuit that is according to claim 1 while detecting analog signal and digital signal, which is characterized in that the PA1
It is electrically connected when being encapsulated with the PA2 by routing to same PIN to realize.
4. circuit that is according to claim 1 while detecting analog signal and digital signal, which is characterized in that the circuit
It further include AC-DC/DC-DC module, LDO power supply module and usb interface module；The LDO power supply module and the USB interface mould
Block passes through VBUS and is electrically connected with the AC-DC/DC-DC module；The LDO power supply module is electrically connected with the MCU；It is described
MCU is electrically connected by FB with the AC-DC/DC-DC module；The usb interface module is connected by D+/D- with MCU.
5. circuit that is according to claim 4 while detecting analog signal and digital signal, which is characterized in that the USB
The D+ of interface module is electrically connected with the PA0 of MCU mouth, and D- is electrically connected with the PA1 and the PA2.
6. a kind of device for detecting analog signal and digital signal simultaneously, is detected while -5 is any described according to claim 1
The circuit of analog signal and digital signal, which is characterized in that the circuit is provided in described device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120497.9U CN209373578U (en) | 2019-01-22 | 2019-01-22 | Circuit and device a kind of while that detect analog signal and digital signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120497.9U CN209373578U (en) | 2019-01-22 | 2019-01-22 | Circuit and device a kind of while that detect analog signal and digital signal |
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| Publication Number | Publication Date |
|---|---|
| CN209373578U true CN209373578U (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920120497.9U Active CN209373578U (en) | 2019-01-22 | 2019-01-22 | Circuit and device a kind of while that detect analog signal and digital signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109614033A (en) * | 2019-01-22 | 2019-04-12 | 芯海科技（深圳）股份有限公司 | It is a kind of while detecting the circuit of analog signal and digital signal, device and method |
-
2019
- 2019-01-22 CN CN201920120497.9U patent/CN209373578U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109614033A (en) * | 2019-01-22 | 2019-04-12 | 芯海科技（深圳）股份有限公司 | It is a kind of while detecting the circuit of analog signal and digital signal, device and method |
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