CN110188057A - A kind of multiplex circuit of the GPIO pin of integrated circuit - Google Patents
A kind of multiplex circuit of the GPIO pin of integrated circuit Download PDFInfo
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- CN110188057A CN110188057A CN201910390355.9A CN201910390355A CN110188057A CN 110188057 A CN110188057 A CN 110188057A CN 201910390355 A CN201910390355 A CN 201910390355A CN 110188057 A CN110188057 A CN 110188057A
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- 241001062009 Indigofera Species 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to technical field of integrated circuits more particularly to a kind of multiplexing methods of the GPIO pin of integrated circuit, including a plurality of GPIO pins, GPIO pin is divided into three parts, is respectively used to realize: WIFI signal pin；The multiplexing pins of Bluetooth signal and pulse code modulation signal；The WIFI equipment wake-up signal and bluetooth equipment wake-up signal drawn respectively by the multiplexing pins electrical level match of Bluetooth signal and pulse code modulation signal.Beneficial effect is, a plurality of GPIO pins are divided into three parts, it is respectively used to the WIFI equipment wake-up signal and bluetooth equipment wake-up signal realizing the multiplexing pins of WIFI signal pin, Bluetooth signal and pulse code modulation signal and being drawn respectively by the multiplexing pins electrical level match of the Bluetooth signal and pulse code modulation signal, it is corresponding to wake up WIFI equipment and bluetooth equipment, circuit structure is simple, cost is relatively low, and does not influence the voice call function of integrated chip.
Description
Technical field
The present invention relates to technical field of integrated circuits more particularly to a kind of multiplexing methods of the GPIO pin of integrated circuit.
Background technique
With the fast development of integrated circuit, integrated circuit uses certain technique, crystal needed for a circuit
The elements such as pipe, resistance, capacitor and inductance and wiring interconnection together, are produced on a fritter or a few fritter semiconductor wafers or medium base
On piece is then encapsulated in a shell, becomes the microstructure with required circuit function；Wherein all elements are in structure
It has been formed a whole that, so that electronic component has been strided forward one in terms of microminaturization, low-power consumption, intelligence and high reliability big
Step.
Currently, the integrated level of chip is higher and higher, encapsulation is smaller and smaller, and the pin of reference is also fewer and fewer, needs to increase
GPIO (General-purpose input/output, the abbreviation of universal input and output, pin can for user by
It is program-controlled freely to use, PIN foot according to Practical Consideration can be used as universal input (GPI) or general output (GPO) or universal input with it is defeated
(GPIO) out), pin is extremely difficult, and the higher cost that when increase needs influences production efficiency, is not easy to promote.
Summary of the invention
For the above-mentioned problems in the prior art, a kind of multiplex circuit of the GPIO pin of integrated circuit is now provided.
Specific technical solution is as follows:
A kind of multiplex circuit of the GPIO pin of integrated circuit characterized by comprising
A plurality of GPIO pins, the GPIO pin include being divided into three parts, are respectively used to realize:
WIFI signal pin；
The multiplexing pins of Bluetooth signal and pulse code modulation signal；
The WIFI equipment drawn respectively by the multiplexing pins electrical level match of the Bluetooth signal and pulse code modulation signal
Wake-up signal and bluetooth equipment wake-up signal.
Preferably, the multiplex circuit further includes a chip, and the GPIO pin of the chip is at least arranged 11.
Preferably, the WIFI signal pin is at least arranged seven.
Preferably, the multiplexing pins of the Bluetooth signal and pulse code modulation signal are at least arranged four.
Preferably, the WIFI signal pin includes:
First data signal pin connects the first GPIO pin；
Second data signal pin connects the second GPIO pin；
Third data signal pin connects third GPIO pin；
4th data signal pin connects the 4th GPIO pin；
Clock Signal pin connects the 5th GPIO pin；
Command signal pin connects the 6th GPIO pin；
Power supply enable signal connects the 7th GPIO pin.
Preferably, the multiplexing pins of the Bluetooth signal and pulse code modulation signal include:
Multiplex input signal pin connects the 8th GPIO pin；
Complex output signals pin connects the 9th GPIO pin；
Multiplexing synchronization signal pins connect the tenth GPIO pin；
Multiplexed clock signal pin connects the 11st GPIO pin.
Preferably, the multiplex circuit further includes a first resistor, and the first resistor connects the tenth GPIO pin,
To wake up pin for realizing the WIFI equipment.
Preferably, the WIFI equipment wakes up pin and wakes up WIFI equipment by the first resistor.
Preferably, the multiplex circuit further includes a second resistance, and the second resistance connects the 11st GPIO and draws
Foot, to wake up pin for realizing the bluetooth equipment.
Preferably, the bluetooth equipment wakes up pin and wakes up bluetooth equipment by the second resistance.
Technical solution of the present invention beneficial effect is: propose a kind of multiplex circuit of the GPIO pin of integrated circuit, it will
A plurality of GPIO pins are divided into three parts, are respectively used to realize WIFI signal pin, Bluetooth signal and pulse code modulation signal
Multiplexing pins and respectively by the multiplexing pins electrical level match of the Bluetooth signal and pulse code modulation signal draw WIFI
Equipment wake-up signal and bluetooth equipment wake-up signal, corresponding to wake up WIFI equipment and bluetooth equipment, circuit structure is simple, cost compared with
It is low, and the voice call function of integrated chip is not influenced.
Detailed description of the invention
With reference to appended attached drawing, more fully to describe the embodiment of the present invention.However, appended attached drawing be merely to illustrate with
It illustrates, and is not meant to limit the scope of the invention.
Fig. 1 is the circuit connection diagram of the multiplexing method of the GPIO pin of the integrated circuit of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The invention will be further described with specific embodiment with reference to the accompanying drawing, but not as the limitation of the invention.
The present invention includes a kind of multiplex circuit of the GPIO pin of integrated circuit characterized by comprising
A plurality of GPIO pins, GPIO pin include being divided into three parts, are respectively used to realize:
WIFI signal pin；
The multiplexing pins of Bluetooth signal and pulse code modulation signal；
It is waken up respectively by the WIFI equipment that the multiplexing pins electrical level match of Bluetooth signal and pulse code modulation signal is drawn
Signal and bluetooth equipment wake-up signal.
By the technical solution of the multiplex circuit of the GPIO pin of said integrated circuit, as shown in Figure 1, the technical solution is answered
For in WIFI circuit and Bluetooth circuit, a plurality of GPIO pins to be divided into three parts, be respectively used to realize WIFI signal pin,
Multiplexing pins of Bluetooth signal and pulse code modulation signal and respectively by the Bluetooth signal and pulse code modulation signal
The WIFI equipment wake-up signal and bluetooth equipment wake-up signal of multiplexing pins electrical level match extraction, it is corresponding to wake up WIFI equipment and indigo plant
Tooth equipment, circuit structure is simple, and cost is relatively low, and does not influence the voice call function of integrated chip MCU.
In a kind of preferably embodiment, multiplex circuit further includes a chip MCU, and the GPIO pin of chip MCU is at least set
Set 11, wherein the first GPIO pin 10 is to send signal pins, and the second GPIO pin 11 is to receive signal pins, third
GPIO pin 12 be the first pulse-width signal pin, the 4th GPIO pin 13 be the second pulse-width signal pin, the 5th
GPIO pin 14 be serial clock signal pin, the 6th GPIO pin 15 be host input slave output signal pin, the 7th
GPIO pin 16 is third pulse-width signal pin, and the 8th GPIO pin 17 is time division multiplexing input signal pin BT-PCM-
DIN, the 9th GPIO pin 18 are time division multiplexing output signal pin BT-PCM-DOUT, and the tenth GPIO pin 19 is time division multiplexing
Sampling frequency signal pin, the 11st GPIO pin 20 are time division multiplexing Clock Signal pin BT-PCM-CLK.
In a kind of preferably embodiment, WIFI signal pin is at least arranged seven, wherein WIFI signal pin includes:
First the first GPIO pin of data signal pin WIFI_SD_D0 connection 10；Second data signal pin WIFI_SD_D1 connection
Two GPIO pins 11；Third data signal pin WIFI_SD_D2 connection third GPIO pin 12；4th data signal pin
The 4th GPIO pin 13 of WIFI_SD_D3 connection；The 5th GPIO pin 14 of Clock Signal pin WIFI_SD_CLK connection；Order letter
Number the 6th GPIO pin 15 of pin WIFI_SD_CMD connection；The 7th GPIO pin 16 of power supply enable signal WIFI_PWREN connection.
In a kind of preferably embodiment, the multiplexing pins of Bluetooth signal and pulse code modulation signal are at least arranged four
It is a, wherein the multiplexing pins of Bluetooth signal and pulse code modulation signal include: that multiplex input signal pin BT-PCM-DIN connects
Connect the 8th GPIO pin 17；The 9th GPIO pin 18 of complex output signals pin BT-PCM-DOUT connection；Multiplexing synchronization signal draws
The tenth GPIO pin 19 of foot BT-PCM-SYNC connection；The 11st GPIO pin of multiplexed clock signal pin BT-PCM-CLK connection
20。
In a kind of preferably embodiment, multiplex circuit further includes a first resistor R1, wherein first resistor R1 connection the
Ten GPIO pins 19, for realizing WIFI equipment wake-up master pin WIFI_WAKE_HOST, wherein WIFI equipment wakes up master
Power traction foot WIFI_WAKE_HOST wakes up WIFI equipment by the first resistor R1, and the resistance value of first resistor R1 is the Europe 4.7K
Nurse.
In a kind of preferably embodiment, multiplex circuit further includes a second resistance R2, wherein second resistance R2 connection the
11 GPIO pins 20, for realizing bluetooth equipment wake-up master pin BT_WAKE_HOST, wherein bluetooth equipment wakes up master
Power traction foot BT_WAKE_HOST wakes up bluetooth equipment by second resistance R2, and the resistance value of second resistance R2 is 4.7K ohm.
In a kind of preferably embodiment, when integrated circuit works normally, WIFI equipment and bluetooth equipment are operated normally, this
When corresponding multiplexing synchronization signal pins BT-PCM-SYNC and multiplexed clock signal pin BT-PCM-CLK be set as output shape
State, WIFI equipment wake-up master pin WIFI_WAKE_HOST and bluetooth equipment wake-up master pin BT_WAKE_HOST output are
High level, when being equivalent to by first resistor R1 and first resistor R2 to multiplexing synchronization signal pins BT-PCM-SYNC and multiplexing
The resistance that clock signal pins BT-PCM-CLK pull-up electricity group is 4.7K ohm, it is logical not influence pulse code modulation signal real-time voice
Talk about function.
Further, when integrated circuit is standby, WIFI equipment is in standby with bluetooth equipment, and multiplexing synchronization signal draws
Foot BT-PCM-SYNC and multiplexed clock signal pin BT-PCM-CLK are set as input state, WIFI equipment wake-up master pin
WIFI_WAKE_HOST and bluetooth equipment wake-up master pin BT_WAKE_HOST output is high level, and WIFI equipment is having at this time
WIFI can export low level when interrupting wake-up or bluetooth interruption wake-up, be called out respectively by first resistor R1 and first resistor R2
WIFI equipment of waking up and bluetooth equipment.
Further, a plurality of GPIO pins are divided into three parts, are respectively used to realize WIFI signal pin, Bluetooth signal
With the multiplexing pins of pulse code modulation signal and respectively by the multiplexing pins of the Bluetooth signal and pulse code modulation signal
The WIFI equipment wake-up signal and bluetooth equipment wake-up signal that electrical level match is drawn, it is corresponding to wake up WIFI equipment and bluetooth equipment,
Circuit structure is simple, and cost is relatively low, and does not influence the voice call function of integrated chip.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of multiplex circuit of the GPIO pin of integrated circuit characterized by comprising
A plurality of GPIO pins, the GPIO pin are divided into three parts, are respectively used to realize:
WIFI signal pin；
The multiplexing pins of Bluetooth signal and pulse code modulation signal；
It is waken up respectively by the WIFI equipment that the multiplexing pins electrical level match of the Bluetooth signal and pulse code modulation signal is drawn
Signal and bluetooth equipment wake-up signal.
2. the multiplex circuit of the GPIO pin of integrated circuit according to claim 1, which is characterized in that the multiplex circuit
It further include a chip, the GPIO pin of the chip is at least arranged 11.
3. the multiplex circuit of the GPIO pin of integrated circuit according to claim 2, which is characterized in that the WIFI signal
Pin is at least arranged seven.
4. the multiplex circuit of the GPIO pin of integrated circuit according to claim 2, which is characterized in that the Bluetooth signal
At least it is arranged four with the multiplexing pins of pulse code modulation signal.
5. the multiplex circuit of the GPIO pin of integrated circuit according to claim 3, which is characterized in that the WIFI signal
Pin includes:
First data signal pin connects the first GPIO pin；
Second data signal pin connects the second GPIO pin；
Third data signal pin connects third GPIO pin；
4th data signal pin connects the 4th GPIO pin；
Clock Signal pin connects the 5th GPIO pin；
Command signal pin connects the 6th GPIO pin；
Power supply enable signal connects the 7th GPIO pin.
6. the multiplex circuit of the GPIO pin of integrated circuit according to claim 4, which is characterized in that the Bluetooth signal
Multiplexing pins with pulse code modulation signal include:
Multiplex input signal pin connects the 8th GPIO pin；
Complex output signals pin connects the 9th GPIO pin；
Multiplexing synchronization signal pins connect the tenth GPIO pin；
Multiplexed clock signal pin connects the 11st GPIO pin.
7. the multiplex circuit of the GPIO pin of integrated circuit according to claim 6, which is characterized in that the multiplex circuit
It further include a first resistor, the first resistor connects the tenth GPIO pin, for realizing WIFI equipment wake-up
Pin.
8. the multiplex circuit of the GPIO pin of integrated circuit according to claim 7, which is characterized in that the WIFI equipment
It wakes up pin and WIFI equipment is waken up by the first resistor.
9. the multiplex circuit of the GPIO pin of integrated circuit according to claim 6, which is characterized in that the multiplex circuit
It further include a second resistance, the second resistance connects the 11st GPIO pin, to call out for realizing the bluetooth equipment
Awake pin.
10. the multiplex circuit of the GPIO pin of integrated circuit according to claim 9, which is characterized in that the indigo plant
Tooth equipment wakes up pin and wakes up bluetooth equipment by the second resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390355.9A CN110188057A (en) | 2019-05-10 | 2019-05-10 | A kind of multiplex circuit of the GPIO pin of integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390355.9A CN110188057A (en) | 2019-05-10 | 2019-05-10 | A kind of multiplex circuit of the GPIO pin of integrated circuit |
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| CN110188057A true CN110188057A (en) | 2019-08-30 |
Family
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| CN201910390355.9A Pending CN110188057A (en) | 2019-05-10 | 2019-05-10 | A kind of multiplex circuit of the GPIO pin of integrated circuit |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478940A (en) * | 2010-11-24 | 2012-05-30 | 英业达股份有限公司 | Control circuit for computer system multiplexing pins |
| CN202949416U (en) * | 2012-11-14 | 2013-05-22 | 青岛海信移动通信技术股份有限公司 | Circuit structure and mobile terminal supporting wireless fidelity (WIFI) and bluetooth communication |
| CN204069293U (en) * | 2014-06-30 | 2014-12-31 | 无锡中星微电子有限公司 | Bluetooth circuit and comprise the blue-tooth device of this Bluetooth circuit |
| CN105187530A (en) * | 2015-09-09 | 2015-12-23 | 高跃技 | Internet-of-Things-technology-based relay device with Bluetooth and wifi |
| CN106452421A (en) * | 2016-09-23 | 2017-02-22 | 杰华特微电子（杭州）有限公司 | Integrated circuit with multiplexing pin and pin multiplexing method |
| CN206323374U (en) * | 2016-12-09 | 2017-07-11 | 惠州高盛达科技有限公司 | A kind of two-in-one wake-up system based on WIFI module and bluetooth module |
| CN207489859U (en) * | 2017-11-17 | 2018-06-12 | 深圳市中易腾达科技股份有限公司 | A kind of IOT module frameworks |
| CN207490923U (en) * | 2017-11-17 | 2018-06-12 | 深圳市中易腾达科技股份有限公司 | A kind of two-in-one module framework of WiFi bluetooths |
-
2019
- 2019-05-10 CN CN201910390355.9A patent/CN110188057A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478940A (en) * | 2010-11-24 | 2012-05-30 | 英业达股份有限公司 | Control circuit for computer system multiplexing pins |
| CN202949416U (en) * | 2012-11-14 | 2013-05-22 | 青岛海信移动通信技术股份有限公司 | Circuit structure and mobile terminal supporting wireless fidelity (WIFI) and bluetooth communication |
| CN204069293U (en) * | 2014-06-30 | 2014-12-31 | 无锡中星微电子有限公司 | Bluetooth circuit and comprise the blue-tooth device of this Bluetooth circuit |
| CN105187530A (en) * | 2015-09-09 | 2015-12-23 | 高跃技 | Internet-of-Things-technology-based relay device with Bluetooth and wifi |
| CN106452421A (en) * | 2016-09-23 | 2017-02-22 | 杰华特微电子（杭州）有限公司 | Integrated circuit with multiplexing pin and pin multiplexing method |
| CN206323374U (en) * | 2016-12-09 | 2017-07-11 | 惠州高盛达科技有限公司 | A kind of two-in-one wake-up system based on WIFI module and bluetooth module |
| CN207489859U (en) * | 2017-11-17 | 2018-06-12 | 深圳市中易腾达科技股份有限公司 | A kind of IOT module frameworks |
| CN207490923U (en) * | 2017-11-17 | 2018-06-12 | 深圳市中易腾达科技股份有限公司 | A kind of two-in-one module framework of WiFi bluetooths |
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Application publication date: 20190830 |
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