CN204632329U - A kind of stereo audio codec module - Google Patents
A kind of stereo audio codec module Download PDFInfo
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- CN204632329U CN204632329U CN201520243481.9U CN201520243481U CN204632329U CN 204632329 U CN204632329 U CN 204632329U CN 201520243481 U CN201520243481 U CN 201520243481U CN 204632329 U CN204632329 U CN 204632329U
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Abstract
The utility model discloses a kind of stereo audio codec module, comprise stereo audio codec chip TLV320AIC23B, voltage conversion circuit, stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2, stereo loudspeaker output interface J3 and signal input output interface P4, and tripod contact pin P2 and tripod contact pin P3; Stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2 and stereo loudspeaker output interface J3 are the interface with L channel link pin, R channel link pin and common port pin, and signal input output interface P4 is the interface with 12 pins; The utility model circuit structure is simple, and easy-to-connect, functional reliability is high, can realize high-quality audio-frequency signal encoding and decoding, practical, and result of use is good, is convenient to promote the use of.
Description
Technical field
The utility model belongs to Audio Signal Processing technical field, is specifically related to a kind of stereo audio codec module.
Background technology
The stereo voice signal referring to the sensation that hearer's sound source can be made in space distribution.Stereo audio is assigned to two independently sound channels usually when recording: L channel and R channel, at playback time people ear by differentiating the spatial impression of the generation such as intensity difference, the time delay sense of hearing from the sound signal of left and right acoustic channels.Stereo audio codec is widely used in the equipment such as portable video video recording equipment of sound card, Digital Television, DVD-RW equipment and Fast Growth.Simultaneously, FPGA has also been widely used in the equipment such as the portable video video recording equipment of Fast Growth, but, in prior art, also lack that circuit structure is simple, easy-to-connect, functional reliability are high, high-quality audio-frequency signal encoding and decoding can be realized, can easily with FPGA with the use of stereo audio codec.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of stereo audio codec module is provided, its circuit structure is simple, easy-to-connect, functional reliability is high, can realize high-quality audio-frequency signal encoding and decoding, practical, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of stereo audio codec module, it is characterized in that: comprise stereo audio codec chip TLV320AIC23B, for accessing+5V power supply and voltage conversion circuit for+5V being converted to+3.3V voltage, stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2, stereo loudspeaker output interface J3 and signal input output interface P4, and for switching by the left channel signals of stereophony microphone input interface J1 input and the tripod contact pin P2 of right-channel signals and tripod contact pin P3, described stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2 and stereo loudspeaker output interface J3 are the interface with L channel link pin, R channel link pin and common port pin, and described signal input output interface P4 is the interface with 12 pins,
1st pin of described stereo audio codec chip TLV320AIC23B, the 8th pin, the 14th pin and the 27th pin all connect with+3.3V the voltage output end of voltage conversion circuit, 11st pin of described stereo audio codec chip TLV320AIC23B, the 15th pin and the equal ground connection of the 28th pin, the 16th pin of described stereo audio codec chip TLV320AIC23B is by polar capacitor C31 in parallel and nonpolar electric capacity C32 ground connection, 3rd pin of described stereo audio codec chip TLV320AIC23B, 4th pin, 5th pin, 6th pin, 7th pin, 21st pin, 22nd pin, 23rd pin, 24th pin and the 25th pin are corresponding in turn to the 9th pin with signal input output interface P4, 7th pin, 5th pin, 3rd pin, 1st pin, 2nd pin, 4th pin, 6th pin, 8th pin and the 10th pin connect, 11st pin of described signal input output interface P4 connects with the cathode output end of+5V power supply, the 12nd pin ground connection of described signal input output interface P4, 9th pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereophone output interface J2 by polar capacitor C14,10th pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereophone output interface J2 by polar capacitor C13, the common port pin ground connection of described stereophone output interface J2, 12nd pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereo loudspeaker output interface J3 by polar capacitor C11,13rd pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereo loudspeaker output interface J3 by polar capacitor C12, the common port pin ground connection of described stereo loudspeaker output interface J3, 17th pin of described stereo audio codec chip TLV320AIC23B is connected with the 2nd pin of tripod contact pin P3 by resistance R22, the resistance R20 of 18th pin by connecting of described stereo audio codec chip TLV320AIC23B, resistance R21 and polar capacitor C15 connects with the 2nd pin of tripod contact pin P2, 3rd pin of described tripod contact pin P2 and the 1st pin of tripod contact pin P3 all connect with the L channel link pin of stereophony microphone input interface J1, 1st pin of described tripod contact pin P2 and the 3rd pin of tripod contact pin P3 all connect with the R channel link pin of stereophony microphone input interface J1, the common port pin ground connection of described stereophony microphone input interface J1, 20th pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereo binary channels circuit input interface J4 by polar capacitor C16,19th pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereo binary channels circuit input interface J4 by polar capacitor C17, the common port pin ground connection of described stereo binary channels circuit input interface J4.
Above-mentioned a kind of stereo audio codec module, it is characterized in that: described voltage conversion circuit comprises voltage regulator chip AMS1117-3.3V ,+5V power interface P1 and resistance R13, described+5V power interface P1 is the interface with two pins, 2nd pin of described+5V power interface P1 connects and ground connection with the cathode output end of+5V power supply, and the 1st pin of described+5V power interface P1 connects with the cathode output end of+5V power supply, 3rd pin of described voltage regulator chip AMS1117-3.3V is connected with the 1st pin of+5V power interface P1 by resistance R12, and by nonpolar electric capacity C2 in parallel and polar capacitor C3 ground connection, described resistance R12 passes through nonpolar electric capacity C1 ground connection with the link of the 1st pin of+5V power interface P1, 2nd pin of described voltage regulator chip AMS1117-3.3V connects with one end of resistance R13, and by polar capacitor C4 in parallel and nonpolar electric capacity C5 ground connection, the other end of described resistance R13 is the+3.3V voltage output end of voltage conversion circuit and passes through nonpolar electric capacity C6 in parallel, nonpolar electric capacity C9 and nonpolar electric capacity C10 ground connection.
Above-mentioned a kind of stereo audio codec module, is characterized in that: comprise diode D1, and the negative electrode of described diode D1 connects with the link of described resistance R20 and resistance R21, the plus earth of described diode D1.
The utility model compared with prior art has the following advantages:
1, the utility model circuit structure is simple, by signalization IO interface P4, can realize the connection of the utility model and FPGA easily.
2, the stereo audio codec chip TLV320AIC23B that the utility model is produced based on TI company realizes stereo audio codec module, stereo audio codec chip TLV320AIC23B built-in earphone output amplifier, support the input mode of MIC and LINE alternative, input and output all have programmable gain-adjusted function, inside is integrated with ADC and DAC module, most high sampling rate reaches 96KHz, 16 bits are provided, 24 than top grade sampled data, the output signal-to-noise ratio of itself ADC and DAC reaches 90dB and 100dB respectively, high-quality audio-frequency signal encoding and decoding can be realized.
3, functional reliability of the present utility model is high, can be used in the equipment such as the portable video video recording equipment of sound card, Digital Television, DVD-RW equipment and Fast Growth, and the work of FPGA development module can be coordinated, and accelerate system evaluation and prototyping, practical.
4, result of use of the present utility model is good, is convenient to promote the use of.
In sum, the utility model circuit structure is simple, and easy-to-connect, functional reliability is high, can realize high-quality audio-frequency signal encoding and decoding, practical, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Description of reference numerals:
1-voltage conversion circuit.
Embodiment
As shown in Figure 1, the utility model comprise stereo audio codec chip TLV320AIC23B, for access+5V power supply and for+5V is converted to+3.3V voltage voltage conversion circuit 1, stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2, stereo loudspeaker output interface J3 and signal input output interface P4, and for the tripod contact pin P2 that switches left channel signals and the right-channel signals inputted by stereophony microphone input interface J1 and tripod contact pin P3; Described stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2 and stereo loudspeaker output interface J3 are the interface with L channel link pin, R channel link pin and common port pin, and described signal input output interface P4 is the interface with 12 pins.
1st pin of described stereo audio codec chip TLV320AIC23B, the 8th pin, the 14th pin and the 27th pin all connect with+3.3V the voltage output end of voltage conversion circuit 1,11st pin of described stereo audio codec chip TLV320AIC23B, the 15th pin and the equal ground connection of the 28th pin, the 16th pin of described stereo audio codec chip TLV320AIC23B is by polar capacitor C31 in parallel and nonpolar electric capacity C32 ground connection, 3rd pin of described stereo audio codec chip TLV320AIC23B, 4th pin, 5th pin, 6th pin, 7th pin, 21st pin, 22nd pin, 23rd pin, 24th pin and the 25th pin are corresponding in turn to the 9th pin with signal input output interface P4, 7th pin, 5th pin, 3rd pin, 1st pin, 2nd pin, 4th pin, 6th pin, 8th pin and the 10th pin connect, 11st pin of described signal input output interface P4 connects with the cathode output end of+5V power supply, the 12nd pin ground connection of described signal input output interface P4, 9th pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereophone output interface J2 by polar capacitor C14,10th pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereophone output interface J2 by polar capacitor C13, the common port pin ground connection of described stereophone output interface J2, 12nd pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereo loudspeaker output interface J3 by polar capacitor C11,13rd pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereo loudspeaker output interface J3 by polar capacitor C12, the common port pin ground connection of described stereo loudspeaker output interface J3, 17th pin of described stereo audio codec chip TLV320AIC23B is connected with the 2nd pin of tripod contact pin P3 by resistance R22, the resistance R20 of 18th pin by connecting of described stereo audio codec chip TLV320AIC23B, resistance R21 and polar capacitor C15 connects with the 2nd pin of tripod contact pin P2, 3rd pin of described tripod contact pin P2 and the 1st pin of tripod contact pin P3 all connect with the L channel link pin of stereophony microphone input interface J1, 1st pin of described tripod contact pin P2 and the 3rd pin of tripod contact pin P3 all connect with the R channel link pin of stereophony microphone input interface J1, the common port pin ground connection of described stereophony microphone input interface J1, 20th pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereo binary channels circuit input interface J4 by polar capacitor C16,19th pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereo binary channels circuit input interface J4 by polar capacitor C17, the common port pin ground connection of described stereo binary channels circuit input interface J4.
As shown in Figure 1, in the present embodiment, described voltage conversion circuit 1 comprises voltage regulator chip AMS1117-3.3V ,+5V power interface P1 and resistance R13, described+5V power interface P1 is the interface with two pins, 2nd pin of described+5V power interface P1 connects and ground connection with the cathode output end of+5V power supply, and the 1st pin of described+5V power interface P1 connects with the cathode output end of+5V power supply, 3rd pin of described voltage regulator chip AMS1117-3.3V is connected with the 1st pin of+5V power interface P1 by resistance R12, and by nonpolar electric capacity C2 in parallel and polar capacitor C3 ground connection, described resistance R12 passes through nonpolar electric capacity C1 ground connection with the link of the 1st pin of+5V power interface P1, 2nd pin of described voltage regulator chip AMS1117-3.3V connects with one end of resistance R13, and by polar capacitor C4 in parallel and nonpolar electric capacity C5 ground connection, the other end of described resistance R13 is the+3.3V voltage output end of voltage conversion circuit 1 and passes through nonpolar electric capacity C6 in parallel, nonpolar electric capacity C9 and nonpolar electric capacity C10 ground connection.
As shown in Figure 1, in the present embodiment, the utility model also comprises diode D1, and the negative electrode of described diode D1 connects with the link of described resistance R20 and resistance R21, the plus earth of described diode D1.Diode D1 is input protection diode, can prevent input signal excessive damage stereo audio codec chip TLV320AIC23B.
When the utility model uses, tripod contact pin P2 and tripod contact pin P3 is for switching the left channel signals and right-channel signals that are inputted by stereophony microphone input interface J1, specifically, when connecting the 1st pin and the 2nd pin of tripod contact pin P2 with jumper cap, and when connecting the 1st pin and the 2nd pin of tripod contact pin P3 with jumper cap, 18th pin of input stereo audio audio codec chip TLV320AIC23B be right-channel signals, the 17th pin of input stereo audio audio codec chip TLV320AIC23B be left channel signals; When connecting the 2nd pin and the 3rd pin of tripod contact pin P2 with jumper cap, and when connecting the 2nd pin and the 3rd pin of tripod contact pin P3 with jumper cap, 18th pin of input stereo audio audio codec chip TLV320AIC23B be left channel signals, the 17th pin of input stereo audio audio codec chip TLV320AIC23B be right-channel signals.Signal input output interface P4 can be connected with FPGA, FPGA is all completed by signal input output interface P4 the sampling of signal and output, wherein, 3rd pin of described stereo audio codec chip TLV320AIC23B is I2S serial clock input interface, 4th pin of described stereo audio codec chip TLV320AIC23B is I2S form serial data input interface, 5th pin of described stereo audio codec chip TLV320AIC23B is I2S form DAC data clock input interface, 6th pin of described stereo audio codec chip TLV320AIC23B is I2S form ADC sampled data output interface, 7th pin of described stereo audio codec chip TLV320AIC23B is I2S form adc data clock input interface, 21st pin of described stereo audio codec chip TLV320AIC23B is that control interface input loads and address selection multiplex interface, 22nd pin of described stereo audio codec chip TLV320AIC23B is serial line interface input pattern option interface, 23rd pin of described stereo audio codec chip TLV320AIC23B is for controlling serial date transfer interface, 24th pin of described stereo audio codec chip TLV320AIC23B is for controlling serial data clock interface, 25th pin of described stereo audio codec chip TLV320AIC23B is reference clock input interface, for providing reference for other clock signals of stereo audio codec chip TLV320AIC23B.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (3)
1. a stereo audio codec module, it is characterized in that: comprise stereo audio codec chip TLV320AIC23B, for accessing+5V power supply and voltage conversion circuit (1) for+5V being converted to+3.3V voltage, stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2, stereo loudspeaker output interface J3 and signal input output interface P4, and for switching by the left channel signals of stereophony microphone input interface J1 input and the tripod contact pin P2 of right-channel signals and tripod contact pin P3, described stereophony microphone input interface J1, stereo binary channels circuit input interface J4, stereophone output interface J2 and stereo loudspeaker output interface J3 are the interface with L channel link pin, R channel link pin and common port pin, and described signal input output interface P4 is the interface with 12 pins,
1st pin of described stereo audio codec chip TLV320AIC23B, the 8th pin, the 14th pin and the 27th pin all connect with+3.3V the voltage output end of voltage conversion circuit (1), 11st pin of described stereo audio codec chip TLV320AIC23B, the 15th pin and the equal ground connection of the 28th pin, the 16th pin of described stereo audio codec chip TLV320AIC23B is by polar capacitor C31 in parallel and nonpolar electric capacity C32 ground connection, 3rd pin of described stereo audio codec chip TLV320AIC23B, 4th pin, 5th pin, 6th pin, 7th pin, 21st pin, 22nd pin, 23rd pin, 24th pin and the 25th pin are corresponding in turn to the 9th pin with signal input output interface P4, 7th pin, 5th pin, 3rd pin, 1st pin, 2nd pin, 4th pin, 6th pin, 8th pin and the 10th pin connect, 11st pin of described signal input output interface P4 connects with the cathode output end of+5V power supply, the 12nd pin ground connection of described signal input output interface P4, 9th pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereophone output interface J2 by polar capacitor C14,10th pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereophone output interface J2 by polar capacitor C13, the common port pin ground connection of described stereophone output interface J2, 12nd pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereo loudspeaker output interface J3 by polar capacitor C11,13rd pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereo loudspeaker output interface J3 by polar capacitor C12, the common port pin ground connection of described stereo loudspeaker output interface J3, 17th pin of described stereo audio codec chip TLV320AIC23B is connected with the 2nd pin of tripod contact pin P3 by resistance R22, the resistance R20 of 18th pin by connecting of described stereo audio codec chip TLV320AIC23B, resistance R21 and polar capacitor C15 connects with the 2nd pin of tripod contact pin P2, 3rd pin of described tripod contact pin P2 and the 1st pin of tripod contact pin P3 all connect with the L channel link pin of stereophony microphone input interface J1, 1st pin of described tripod contact pin P2 and the 3rd pin of tripod contact pin P3 all connect with the R channel link pin of stereophony microphone input interface J1, the common port pin ground connection of described stereophony microphone input interface J1, 20th pin of described stereo audio codec chip TLV320AIC23B is connected with the L channel link pin of stereo binary channels circuit input interface J4 by polar capacitor C16,19th pin of described stereo audio codec chip TLV320AIC23B is connected with the R channel link pin of stereo binary channels circuit input interface J4 by polar capacitor C17, the common port pin ground connection of described stereo binary channels circuit input interface J4.
2. according to a kind of stereo audio codec module according to claim 1, it is characterized in that: described voltage conversion circuit (1) comprises voltage regulator chip AMS1117-3.3V ,+5V power interface P1 and resistance R13, described+5V power interface P1 is the interface with two pins, 2nd pin of described+5V power interface P1 connects and ground connection with the cathode output end of+5V power supply, and the 1st pin of described+5V power interface P1 connects with the cathode output end of+5V power supply, 3rd pin of described voltage regulator chip AMS1117-3.3V is connected with the 1st pin of+5V power interface P1 by resistance R12, and by nonpolar electric capacity C2 in parallel and polar capacitor C3 ground connection, described resistance R12 passes through nonpolar electric capacity C1 ground connection with the link of the 1st pin of+5V power interface P1, 2nd pin of described voltage regulator chip AMS1117-3.3V connects with one end of resistance R13, and by polar capacitor C4 in parallel and nonpolar electric capacity C5 ground connection, the other end of described resistance R13 is the+3.3V voltage output end of voltage conversion circuit (1) and passes through nonpolar electric capacity C6 in parallel, nonpolar electric capacity C9 and nonpolar electric capacity C10 ground connection.
3. according to a kind of stereo audio codec module according to claim 1, it is characterized in that: comprise diode D1, the negative electrode of described diode D1 connects with the link of described resistance R20 and resistance R21, the plus earth of described diode D1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520243481.9U CN204632329U (en) | 2015-04-21 | 2015-04-21 | A kind of stereo audio codec module |
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| CN201520243481.9U CN204632329U (en) | 2015-04-21 | 2015-04-21 | A kind of stereo audio codec module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412768A (en) * | 2016-12-22 | 2017-02-15 | 杭州电子科技大学 | Device for improving classroom speech intelligibility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412768A (en) * | 2016-12-22 | 2017-02-15 | 杭州电子科技大学 | Device for improving classroom speech intelligibility |
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Granted publication date: 20150909 Termination date: 20160421 |