CN206490667U - A kind of digital intercom chip and digital intercom equipment - Google Patents
A kind of digital intercom chip and digital intercom equipment Download PDFInfo
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- CN206490667U CN206490667U CN201720037388.1U CN201720037388U CN206490667U CN 206490667 U CN206490667 U CN 206490667U CN 201720037388 U CN201720037388 U CN 201720037388U CN 206490667 U CN206490667 U CN 206490667U
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Abstract
The utility model provides a kind of integrated talkback chip and digital intercom equipment, and its main control unit, voice signal codec unit, sound output amplifier unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband unit, RF transceiver unit, communication data interface and communication bus are integrated on one chip by system level chip technology；So one single chip can just realize digital communication functions, based on this, the circuit of very little can just be used using the equipment of the chip, the problem of being unfavorable for device miniaturization caused by the receiver circuit complexity for solving existing digital handset.
Description
Technical field
The utility model is related to digital intercom field, more particularly to a kind of digital intercom chip and digital intercom equipment.
Background technology
ETSI is in order to which the low and middle-end for meeting European Countries is professional and commercial user is to mobile communication
Need, DMR digital mobile radio system standard ETSI TS 102 361 are proposed in April, 2005, DMR is adjusted using 4FSK
System, channel spacing 12.5kHz, transmission rate 9.6kbps, multi-access mode is double time slot tdmas, speech encoding rate 3.6kbps.,
DMR digital mobile radio systems are applied to the industries such as public utilities, school, hospital, hotel, animal husbandry.Existing DMR intercoms
Receiver generally uses traditional superhet double conversion scheme, due to containing bulky crystal filter in circuit
And ceramic filter, cause the complicated cost of circuit of digital intercom equipment high, be unfavorable for device miniaturization.
Utility model content
The utility model provides a kind of digital intercom chip and digital intercom equipment, to solve existing digital handset
The problem of receiver circuit is complicated.
The utility model provides a kind of integrated talkback chip, including：Main control unit, voice signal codec unit, sound
Frequency output power amplifier unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband unit,
RF transceiver unit, communication data interface and the communication bus for connecting each unit；Sound output amplifier unit is used
In exports audio signal；Microphone amplifying circuit unit is used to receive audio signal；Communication data interface is advised based on bus marco
Then, the data signal of at least one type is received and dispatched, and is transmitted to main control unit；Main control unit is used to control in integrated talkback chip
The work of each device；RF transceiver unit is used to baseband signal is adjusted into high frequency carrier or demodulated from high frequency carrier
Baseband signal, radio frequency baseband unit is used for the debugging demodulation for carrying out baseband signal；PMU is used to turn external voltage
It is changed to other chip internal component required voltages；Main control unit, voice signal codec unit, sound output amplifier
Unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband unit, RF transceiver unit,
Communication data interface and communication bus are integrated on one chip by system level chip technology.
Further, main control unit includes first microprocessor unit and the first digital signal processing unit, radio frequency baseband
Unit includes the second microprocessor unit and the second digital signal processing unit.
Further, first microprocessor unit and/or the second microprocessor unit are 32 reduced instruction microcontroller lists
Member；First digital signal processing unit and/or the second digital signal processing unit are 16 bit stream pipeline type Digital Signal Processing lists
Member.
Further, voice signal codec unit is 16 voice signal codec units.
Further, memory cell includes at least one in PSRAM memory cells and FLASH memory unit.
Further, integrated talkback chip also includes FM fm broadcast receiver units, FM fm broadcast receiver units
For receiving FM fm broadcast signals；FM fm broadcast receivers unit is integrated in pairs by system level chip technology
Say in chip.
Further, integrated talkback chip also includes bluetooth radio receiver/transmitter unit, and bluetooth radio receives hair
Penetrating machine unit is used for bluetooth；Bluetooth radio receiver/transmitter unit is integrated in by system level chip technology
In integrated talkback chip.
Further, PMU is used to 3.2V-4.2V external voltage being converted to digital signal processing unit
And the 1.4V voltages that memory cell needs, and voice signal codec unit, sound output amplifier unit, Mike
The 2.4V voltages that wind amplifier circuit unit, microprocessor unit and radio frequency mobile radio receiver transmitter unit need.
Corresponding, the utility model provides a kind of digital intercom equipment, including the integrated talkback that the utility model is provided
Chip, digital communication functions are realized using integrated talkback chip.
Further, digital intercom equipment also includes power amplifier, power amplifier and penetrating in integrated talkback chip
Frequency transceiver unit is connected, and power amplification is carried out for the output signal to RF transceiver unit.
The beneficial effects of the utility model：
The utility model provides a kind of new integrated talkback chip and digital intercom equipment, and it includes main control unit, words
Message codec unit, sound output amplifier unit, microphone amplifying circuit unit, PMU, storage
Device unit, radio frequency baseband unit, RF transceiver unit, communication data interface and the communication bus for connecting each unit；Audio
Output power amplifier unit is used for exports audio signal；Microphone amplifying circuit unit is used to receive audio signal；Communicate number
Bus marco rule is based on according to interface, the data signal of at least one type is received and dispatched, and transmit to main control unit；Main control unit is used
In the work of each device in control integrated talkback chip；RF transceiver unit be used for by baseband signal be adjusted to high frequency carrier or
Person demodulates baseband signal from high frequency carrier, and radio frequency baseband unit is used for the debugging demodulation for carrying out baseband signal；Power management
Unit is used to external voltage being converted to other chip internal component required voltages；Main control unit, voice signal encoding and decoding list
Member, sound output amplifier unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband
Unit, RF transceiver unit, communication data interface and communication bus are integrated in a piece of by system level chip technology
On chip；So one single chip can just realize digital communication functions, just can be using very using the equipment of the chip based on this
The problem of being unfavorable for device miniaturization caused by small circuit, the receiver circuit complexity for solving existing digital handset.
Brief description of the drawings
A kind of structural representation for the integrated talkback chip that Fig. 1 provides for the utility model first embodiment；
Another structural representation for the integrated talkback chip that Fig. 2 provides for the utility model first embodiment；
Fig. 3 is the circuit connection diagram for the existing digital handset that the utility model second embodiment is related to；
The structural representation for the integrated talkback chip that Fig. 4 provides for the utility model second embodiment；
The circuit connection diagram for the integrated talkback chip that Fig. 5 provides for the utility model second embodiment.
Embodiment
The further annotation explanation of output is now done to the utility model by way of embodiment combination accompanying drawing.
First embodiment：
The structural representation for the digital intercom chip that Fig. 1 provides for the utility model first embodiment, as shown in Figure 1,
In the present embodiment, the digital intercom chip that the utility model is provided includes：Main control unit 11, voice signal codec unit 12,
Sound output amplifier unit 13, microphone amplifying circuit unit 14, radio frequency baseband unit 15, PMU 16,
The communication of the unshowned communication data interface of memory cell 17, RF transceiver unit 18, Fig. 1 and connection each unit is total
Line；RF transceiver unit 18 is used to baseband signal being adjusted to high frequency carrier or base band letter is demodulated from high frequency carrier
Number, radio frequency baseband unit 15 is used for the debugging demodulation for carrying out baseband signal；Sound output amplifier unit 13 is used to export
Audio signal；Microphone amplifying circuit unit 14 is used to receive audio signal；Communication data interface is based on bus marco rule, receives
A type of data signal is sent to less, and is transmitted to main control unit 11；Main control unit 11 is used to control in integrated talkback chip
The work of each device；PMU 16 is used to external voltage being converted to other chip internal component required voltages；It is main
Control unit 11, voice signal codec unit 12, sound output amplifier unit 13, microphone amplifying circuit unit 14,
Radio frequency baseband unit 15, PMU 16, memory cell 17, RF transceiver unit 18, communication data interface and
The communication bus for connecting each unit is integrated on one chip by system level chip technology.
As shown in Fig. 2 in certain embodiments, the main control unit 11 in above-described embodiment includes first microprocessor unit
111 and first digital signal processing unit 112, radio frequency baseband unit 15 includes the second microprocessor unit 151 and the second numeral
Signal processing unit 152.
As shown in figure 3, in certain embodiments, the first microprocessor unit 111 and/or second in above-described embodiment is micro-
Processor unit 151 is 32 reduced instruction micro-control units.
As shown in figure 3, in certain embodiments, the first digital signal processing unit 112 in above-described embodiment and/or
Two digital signal processing unit 152 is 16 bit stream pipeline type digital signal processing units.
As shown in figure 3, in certain embodiments, the voice signal codec unit in above-described embodiment is 16 speech letters
Number codec unit.
As shown in Fig. 2 in certain embodiments, the memory cell 17 in above-described embodiment includes PSRAM memory lists
Member 171 and FLASH memory unit 172 at least one.
As shown in figure 5, in certain embodiments, the communication data interface in above-described embodiment includes RTC interface, TIMER
Interface, DA interfaces, AD interfaces, CAM interfaces, LCD interfaces, KPD interfaces, I2C interfaces, SPI interface, UART interface, USB2.0 connect
At least one of mouth, LED drive interface, PWM interfaces, SD/MMC interfaces, GPIO interface, I2S interfaces.
As shown in figure 4, in certain embodiments, the integrated talkback chip in above-described embodiment also connects including FM frequency modulation broadcastings
Receipts machine unit, FM fm broadcast receivers unit is used to receive FM fm broadcast signals；FM fm broadcast receiver units pass through
System level chip technology is integrated in integrated talkback chip.
As shown in figure 4, in certain embodiments, the integrated talkback chip in above-described embodiment also connects including bluetooth radio
Receiver/transmitter unit, bluetooth radio receiver/transmitter unit is used for bluetooth；Bluetooth radio receiver/transmitter list
Member is integrated in integrated talkback chip by system level chip technology.
In certain embodiments, the PMU in above-described embodiment is used to turn 3.2V-4.2V external voltage
It is changed to the 1.4V voltages that digital signal processing unit and memory cell need, and voice signal codec unit, audio are defeated
Go out Power Amplifier Unit, microphone amplifying circuit unit, microprocessor unit and radio frequency mobile radio receiver emitter
The 2.4V voltages that unit needs.
It is corresponding, the utility model provide a kind of digital intercom equipment, including and use above-mentioned integrated talkback chip,
Realize digital communication functions.
In certain embodiments, the digital intercom equipment in above-described embodiment also includes power amplifier, power amplifier
It is connected with the RF transceiver unit in integrated talkback chip, carrying out power for the output signal to RF transceiver unit puts
Greatly.
The utility model provides a kind of new integrated talkback chip and digital intercom equipment, and it includes main control unit, words
Message codec unit, sound output amplifier unit, microphone amplifying circuit unit, PMU, storage
Device unit, radio frequency baseband unit, RF transceiver unit, communication data interface and the communication bus for connecting each unit；Audio
Output power amplifier unit is used for exports audio signal；Microphone amplifying circuit unit is used to receive audio signal；Communicate number
Bus marco rule is based on according to interface, the data signal of at least one type is received and dispatched, and transmit to main control unit；Main control unit is used
In the work of each device in control integrated talkback chip；RF transceiver unit be used for by baseband signal be adjusted to high frequency carrier or
Person demodulates baseband signal from high frequency carrier, and radio frequency baseband unit is used for the debugging demodulation for carrying out baseband signal；Power management
Unit is used to external voltage being converted to other chip internal component required voltages；Main control unit, voice signal encoding and decoding list
Member, sound output amplifier unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband
Unit, RF transceiver unit, communication data interface and communication bus are integrated in a piece of by system level chip technology
On chip；So one single chip can just realize digital communication functions, just can be using very using the equipment of the chip based on this
The problem of being unfavorable for device miniaturization caused by small circuit, the receiver circuit complexity for solving existing digital handset.
Further annotation explanation is done to the utility model in conjunction with concrete application scene.
Second embodiment：
The circuit for the digital handset that the present embodiment is related to is as shown in figure 3, it includes：LNA low-noise amplifiers 31, mixing
Device 32, adjustable I/Q signal amplifier 33, ADC analog and digital signals converter 34, DSP 35 and DAC numerals
Analog signal converter 36.
Operationally, the rf frequency modulated signal that antenna is received is very faint, will be defeated by low-noise amplifier 31
Enter signal and be amplified to suitable amplitude to go frequency mixer 32 to be mixed with the local oscillator in chip, filter out some unwanted
Noise signal produces base band I/Q signal, and the working frequency of local oscillator is related to the working frequency of setting contents of channel, Ke Yi
100MHz is set between 1000MHz.Signal is amplified to suitable amplitude again by AD converter through variable gain amplifier 33
34 become data signal, wherein also synchronous comprising signal, the processing of 12.5KHz LPFs etc..Data are sent to DSP Processor 35
It is middle to carry out various data processings, such as：The error-detection error-correction of digital signal, the compression of voice signal and decompression are received, DMR intercoms are empty
Middle interface protocol etc., meets the requirement of the European standards of DMR digital mobile radio systems standard ETSI TS 102 361, can be simultaneous
Hold every other DMR intercoms, the communication apparatus such as base station and intermediate station, the data after being handled through DSP reach DAC digital simulations letter
Number converter 36 is converted into analog signal output to loudspeaker；Similarly, the microphone signal of speech enters ADC analog and digital signals and turned
Parallel operation, is converted into data signal, through DSP and modulates the brewed DMR of synthesis with local oscillator VCO and sends out
Penetrate machine signal.
From the figure 3, it may be seen that circuit in existing digital handset it is complicated, it is necessary to set independent microprocessor unit MCU,
DSP etc., circuit realiration is complicated, and equipment cost is high.
For this problem, a kind of monolithic SOC DMR digital mobile radio systems are present embodiments provided, it is tied
Composition is as shown in figure 4, be integrated with radio-frequency transmitter emitter, MCU, the device such as DSP, and it is specifically included：Radio frequency baseband unit
401st, 16 voice signal codec units 402, FM fm broadcast receivers unit 403, bluetooth (Bluetooth) radio connect
Receiver/transmitter unit 404, sound output amplifier unit 405, microphone amplifying circuit unit 406, main control unit 407,
Power management (PMU) unit 408,16MB PSRAM memory cells 409,16MB FLASH memories unit 410 and radio frequency are received
Send out device unit 411；In actual applications, RF transceiver unit 411 realizes the circuit function of circuit in dotted line frame in Fig. 3.
Specifically, the internal circuit diagram for the integrated talkback chip that the present embodiment is provided is as shown in figure 5, it includes：
2 CPU, are defined as XCPU and BCPU；
2 DSP, are defined as DSP1 and DSP2；
Radio frequency chip is defined as RF Transceiver；
Wherein, BCPU and DSP2 belongs to radio frequency baseband unit, and radio frequency baseband unit can realize the debugging solution of baseband signal
Adjust, the modulation and demodulation algorithm in communication system is more, for example：FSK,4FSK,GFSK,PFSK；Conventional algorithm is 4FSK；
RF Transceiver belong to RF transceiver, and baseband signal is modulated to high frequency by RF Transceiver and carried
Ripple, or high frequency carrier demodulate baseband signal by RF Transceiver；
XCPU and DSP1 belongs to main control unit, and main control unit can connect conventional peripheral hardware, for example：Keyboard, LCD display,
Microphone, loudspeaker, sensors etc., main control unit realizes major function logic and basic service function；
Main control unit and Base Band Unit are connected with SYS APB buses.
The data emission process that this chip is related to is：Initial data is passed to Base Band Unit, Base Band Unit by main control unit
Initial data is converted to 4FSK signals, 4FSK signals are modulated to high frequency carrier by RF Transceiver and launched.This
The DRP data reception process that chip is related to is：High-frequency signal demodulates 4FSK signals, Base Band Unit handle by RF Transceiver
4FSK signals revert to original data, then are transferred to main control unit.
In actual applications, the RF signal strength of RF Transceiver devices output is limited, to adapt to 1W, 2W, 4W,
5W communication systems meet special, it is necessary to which the high-frequency signal of output is amplified to specified intensity range with PA (power amplifying device) devices
Determine the requirement of communication system.
The chip that the present embodiment is provided can realize digital communication system, and the system has high reliability and remote waits spy
Property, communication function covers wired and wireless telecommunication system.Workable communication scenes are such as：DMR,PDT,Tetra,Astro,
GoTa, iDEN, IoT etc..
In summary, implemented by of the present utility model, at least there is following beneficial effect：
The utility model provides a kind of new integrated talkback chip and digital intercom equipment, and it includes main control unit, words
Message codec unit, sound output amplifier unit, microphone amplifying circuit unit, PMU, storage
Device unit, radio frequency baseband unit, RF transceiver unit, communication data interface and the communication bus for connecting each unit；Audio
Output power amplifier unit is used for exports audio signal；Microphone amplifying circuit unit is used to receive audio signal；Communicate number
Bus marco rule is based on according to interface, the data signal of at least one type is received and dispatched, and transmit to main control unit；Main control unit is used
In the work of each device in control integrated talkback chip；RF transceiver unit be used for by baseband signal be adjusted to high frequency carrier or
Person demodulates baseband signal from high frequency carrier, and radio frequency baseband unit is used for the debugging demodulation for carrying out baseband signal；Power management
Unit is used to external voltage being converted to other chip internal component required voltages；Main control unit, voice signal encoding and decoding list
Member, sound output amplifier unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband
Unit, RF transceiver unit, communication data interface and communication bus are integrated in a piece of by system level chip technology
On chip；So one single chip can just realize digital communication functions, just can be using very using the equipment of the chip based on this
The problem of being unfavorable for device miniaturization caused by small circuit, the receiver circuit complexity for solving existing digital handset.
It the above is only embodiment of the present utility model, any formal limit not done to the utility model
System, every any simple modification, equivalent variations, combination made according to technical spirit of the present utility model to embodiment of above
Or modification, still fall within the protection domain of technical solutions of the utility model.
Claims (10)
1. a kind of integrated talkback chip, it is characterised in that including：Main control unit, voice signal codec unit, audio output work(
Rate amplifier unit, microphone amplifying circuit unit, PMU, memory cell, radio frequency baseband unit, radio-frequency receiving-transmitting
Device unit, communication data interface and the communication bus for connecting each unit；The sound output amplifier unit is used for defeated
Go out audio signal；The microphone amplifying circuit unit is used to receive audio signal；The communication data interface is based on total line traffic control
System rule, receives and dispatches the data signal of at least one type, and transmits to the main control unit；The main control unit is used to control institute
State the work of each device in integrated talkback chip；The RF transceiver unit be used for by baseband signal be adjusted to high frequency carrier or
Person demodulates baseband signal from high frequency carrier, and the radio frequency baseband unit is used for the debugging demodulation for carrying out baseband signal；It is described
PMU is used to external voltage being converted to other chip internal component required voltages；The main control unit, speech
Signal codec unit, sound output amplifier unit, microphone amplifying circuit unit, PMU, memory
Unit, radio frequency baseband unit, RF transceiver unit, communication data interface and communication bus pass through system level chip technique
Integration ofTechnology is on one chip.
2. integrated talkback chip as claimed in claim 1, it is characterised in that the main control unit includes first microprocessor list
Member and the first digital signal processing unit, the radio frequency baseband unit are included at the second microprocessor unit and the second data signal
Manage unit.
3. integrated talkback chip as claimed in claim 2, it is characterised in that the first microprocessor unit and/or described
Second microprocessor unit is 32 reduced instruction micro-control units；First digital signal processing unit and/or the second number
Word signal processing unit is 16 bit stream pipeline type digital signal processing units.
4. integrated talkback chip as claimed in claim 1, it is characterised in that the voice signal codec unit is 16 words
Message codec unit.
5. integrated talkback chip as claimed in claim 1, it is characterised in that the memory cell includes PSRAM memories
At least one in unit and FLASH memory unit.
6. integrated talkback chip as claimed in claim 1, it is characterised in that it is wide that the integrated talkback chip also includes FM frequency modulation
Receiver unit is broadcast, the FM fm broadcast receivers unit is used to receive FM fm broadcast signals；The FM frequency modulation broadcastings connect
Receipts machine unit is integrated in the integrated talkback chip by system level chip technology.
7. integrated talkback chip as claimed in claim 1, it is characterised in that it is wireless that the integrated talkback chip also includes bluetooth
Electric receiver/transmitter unit, the bluetooth radio receiver/transmitter unit is used for bluetooth；The bluetooth radio
Receiver/transmitter unit is integrated in the integrated talkback chip by system level chip technology.
8. the integrated talkback chip as described in any one of claim 1 to 7, it is characterised in that the PMU is used for
3.2V-4.2V external voltage is converted into the 1.4V electricity that the digital signal processing unit and the memory cell need
Pressure, and the voice signal codec unit, sound output amplifier unit, microphone amplifying circuit unit, Wei Chu
Manage the 2.4V voltages that device unit and radio frequency mobile radio receiver transmitter unit need.
9. a kind of digital intercom equipment, it is characterised in that including the integrated talkback chip as described in any one of claim 1 to 8,
Digital communication functions are realized using the integrated talkback chip.
10. digital intercom equipment as claimed in claim 9, it is characterised in that also including power amplifier, the power amplification
Device is connected with the RF transceiver unit in the integrated talkback chip, for the output signal to the RF transceiver unit
Carry out power amplification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720037388.1U CN206490667U (en) | 2017-01-12 | 2017-01-12 | A kind of digital intercom chip and digital intercom equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720037388.1U CN206490667U (en) | 2017-01-12 | 2017-01-12 | A kind of digital intercom chip and digital intercom equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847862A (en) * | 2018-04-16 | 2018-11-20 | 力同科技股份有限公司 | A kind of integrated talkback chip, integrated talkback terminal and signal send processing method |
| CN108847863A (en) * | 2018-04-19 | 2018-11-20 | 力同科技股份有限公司 | A kind of integrated talkback chip, integrated talkback terminal and signal processing method |
| CN109120303A (en) * | 2018-10-23 | 2019-01-01 | 武汉中元通信股份有限公司 | A kind of communication radio station for parachuting |
| CN111092624A (en) * | 2018-10-23 | 2020-05-01 | 成都共同进步信息技术有限公司 | Broadcasting device with DMR digital intercommunication function |
| CN111147098A (en) * | 2018-10-16 | 2020-05-12 | 力同科技股份有限公司 | Integrated intercom system chip and intercom |
-
2017
- 2017-01-12 CN CN201720037388.1U patent/CN206490667U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847862A (en) * | 2018-04-16 | 2018-11-20 | 力同科技股份有限公司 | A kind of integrated talkback chip, integrated talkback terminal and signal send processing method |
| CN108847863A (en) * | 2018-04-19 | 2018-11-20 | 力同科技股份有限公司 | A kind of integrated talkback chip, integrated talkback terminal and signal processing method |
| CN111147098A (en) * | 2018-10-16 | 2020-05-12 | 力同科技股份有限公司 | Integrated intercom system chip and intercom |
| CN109120303A (en) * | 2018-10-23 | 2019-01-01 | 武汉中元通信股份有限公司 | A kind of communication radio station for parachuting |
| CN111092624A (en) * | 2018-10-23 | 2020-05-01 | 成都共同进步信息技术有限公司 | Broadcasting device with DMR digital intercommunication function |
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