CN216490787U - HDMI interface control circuit with self-adaptive mode - Google Patents
HDMI interface control circuit with self-adaptive mode Download PDFInfo
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- CN216490787U CN216490787U CN202123288174.7U CN202123288174U CN216490787U CN 216490787 U CN216490787 U CN 216490787U CN 202123288174 U CN202123288174 U CN 202123288174U CN 216490787 U CN216490787 U CN 216490787U
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Abstract
The utility model discloses a HDMI interface control circuit with self-adaptation mode, including the input interface unit, HDMI interface seat sublevel peripheral connecting circuit, HDMI audio processing circuit and the audio output of the HDMI functional equipment that connect gradually-external to the power amplifier circuit of shipping and amplification level, in this utility model: the adopted resistor and capacitor are discrete elements, so that the voltage-resistant grade between the electrical components is increased, and the power supply of the HDMI interface is protected; the model of second integrated circuit is HI3516A, and it has the surge protection function, when the heavy current appears in the end of using electricity, can cut off the power supply of HDMI interface automatically, guarantees to use the end of using electricity and can not damage to possess the HDMI interface power supply automatic recovery function.
Description
Technical Field
The utility model relates to a HDMI interface control circuit field, concretely relates to HDMI interface control circuit with self-adaptation mode.
Background
The HDMI is called a High Definition Multimedia Interface (High Definition Multimedia Interface), and is a High-speed fully digital image and audio transmission Interface, which can transmit High-Definition video signals and audio signals without compression only by one line. The HDMI interface complies with the current and future requirements for high-definition video transmission, and is therefore supported more and more widely, and at present, devices including televisions, computers, tablet computers, high-definition digital set-top boxes and even mobile phones have corresponding HDMI interfaces.
However, the conventional HDMI interface control circuit often has the following problems: 1. the HDMI interface control circuit adopts an integrated circuit, so that the circuit cost is increased, and the integrated circuit lacks a power supply protection function; 2. when the power consumption end has instantaneous large current, no good emergency protection measures are provided, and the reliability of the HDMI interface control circuit is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome foretell not enough, provide a HDMI interface control circuit with self-adaptation mode.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
an HDMI interface control circuit with self-adaptive mode comprises an input interface unit of HDMI functional equipment, an HDMI interface seat sublevel peripheral connecting circuit, an HDMI audio processing circuit and an audio output-external amplifier circuit which are sequentially connected;
the HDMI audio processing circuit comprises a first integrated circuit, a first capacitor, a second capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a thirteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, an eighth resistor, a twelfth resistor, a first diode and a crystal oscillator, wherein the type of the first integrated circuit is ADAU1701, the forty-fifth end of the first integrated circuit is grounded, the forty-fourth end of the first integrated circuit is respectively connected with an analog ground through the first capacitor and the second capacitor, the first end of the first integrated circuit is respectively connected with the analog ground through the fifth capacitor and the ninth capacitor, the second end of the first integrated circuit is respectively connected with a digital ground through the sixth capacitor, the seventh capacitor and the eighth capacitor, the second end of the first integrated circuit is connected with the cathode of the first diode, the anode of the first diode is externally connected with a 5V direct current voltage power supply, the third end of the first integrated circuit is connected with a digital ground through a tenth capacitor, the fourth end of the first integrated circuit is connected with the digital ground, the tenth end of the first integrated circuit is connected with the digital ground through a thirteenth capacitor, the tenth capacitor of the first integrated circuit is connected with the thirteenth end of the first integrated circuit through an eighth resistor, the twelfth end of the first integrated circuit is connected with the digital ground, the thirteenth end of the first integrated circuit is respectively connected with the digital ground through a fifteenth capacitor and a sixteenth capacitor, the fourteenth end of the first integrated circuit is connected with the digital ground through a seventeenth capacitor, the fifteenth end of the first integrated circuit is connected with the sixteenth end of the first integrated circuit through a crystal oscillator, the twentieth end of the first integrated circuit is connected with the digital ground, and a parallel circuit consisting of the eighteenth capacitor and the twelfth resistor is connected with an analog ground and the digital ground in the HDMI audio processing circuit.
Preferably, the input interface unit of the HDMI functional apparatus includes an HDMI interface.
Preferably, the peripheral connection circuit of the HDMI interface socket sub-stage includes a second integrated circuit, a first inductor, a second inductor, an eleventh capacitor, a twelfth capacitor, a fourteenth capacitor, a nineteenth capacitor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a second diode, and a first triode, the model of the second integrated circuit is HI3516A, the second, fifth, eighth, tenth, seventeenth, twentieth, twenty-second, and twenty-third terminals of the second integrated circuit are all connected to a digital ground, the thirteenth terminal of the second integrated circuit is connected to the thirty terminal of the first integrated circuit through the first inductor, the fourteenth terminal of the second integrated circuit is connected to a digital ground through a series circuit composed of the second inductor, the twelfth capacitor, and the eleventh capacitor, the fifteenth terminal of the second integrated circuit is connected to the seventh terminal of the first integrated circuit through the third resistor, sixteenth end of the second integrated circuit is connected with the sixth end of the first integrated circuit, eighteenth end of the second integrated circuit is externally connected with a 5V direct current voltage power supply through a fifth resistor, fifteenth end of the second integrated circuit is grounded through a series circuit formed by a ninth resistor and a fourteenth capacitor, sixteenth end of the second integrated circuit is respectively connected with the eighteenth end of the second integrated circuit through a sixth resistor, the ninth resistor is connected with the fourteenth capacitor, a nineteenth end of the second integrated circuit is connected with an anode of the second diode, a cathode of the second diode is connected with a base electrode of the triode through the tenth resistor, the base electrode of the triode is connected with an emitting electrode of the triode through a parallel circuit formed by the eleventh resistor and the nineteenth capacitor, a collector electrode of the triode is externally connected with a 3.3V direct-current voltage power supply through the seventh resistor, and the collector electrode of the triode is connected with thirty-two ends of the first integrated circuit.
Preferably, the audio output-external connection operational amplifier circuit comprises a connector, a first resistor, a second resistor, a third capacitor and a fourth capacitor, the connector is provided with five interfaces, the fifth interface of the connector is externally connected with a 5V direct-current voltage power supply, the fourth interface of the connector is connected with a digital ground, the third interface of the connector is connected with an analog ground, the second interface of the connector is connected with the sixteenth end of the first integrated circuit through a series circuit formed by the first resistor and the third capacitor, and the first interface of the connector is connected with the seventeenth end of the first integrated circuit through a series circuit formed by the second resistor and the fourth capacitor.
The utility model has the advantages that: in the HDMI interface control circuit with the adaptive mode:
1. the adopted resistor and capacitor are discrete elements, so that the voltage-resistant grade between the electrical components is increased, and the power supply of the HDMI interface is protected;
2. the model of second integrated circuit is HI3516A, and it has the surge protection function, when the heavy current appears in the end of using electricity, can cut off the power supply of HDMI interface automatically, guarantees to use the end of using electricity and can not damage to possess the HDMI interface power supply automatic recovery function.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic circuit diagram of the HDMI audio processing circuit of the present invention;
fig. 3 is a schematic circuit diagram of the HDMI interface socket sub-level peripheral connection circuit of the present invention;
fig. 4 is a schematic circuit diagram of the audio output-external connection to the amplifier stage power amplifier circuit of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-4, an HDMI interface control circuit with adaptive mode includes an input interface unit 1, an HDMI interface seat sublevel peripheral connection circuit 2, an HDMI audio processing circuit 3, and an audio output-external connection to an amplifier power amplifier circuit 4 of an HDMI functional device, which are connected in sequence;
said HDMI audio processing circuit 3 comprises a first integrated circuit U1, a first capacitor C1, a second capacitor C2, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a thirteenth capacitor C13, a fifteenth capacitor C13, a sixteenth capacitor C13, a seventeenth capacitor C13, an eighteenth capacitor C13, an eighth resistor R13, a twelfth resistor R13, a first diode D13 and a crystal oscillator JZ 13, the first integrated circuit U13 is of type ADAU1701, the forty-fifth terminal of the first integrated circuit U13 is grounded, the fourth terminal of the first integrated circuit U13 is connected to analog ground through the first capacitor C13 and the second capacitor C13, respectively, the first terminal of the first integrated circuit U13 is connected to analog ground through the fifth capacitor C13 and the ninth capacitor C13, respectively, the fourth terminal of the first integrated circuit U13 is connected to analog ground through the sixth capacitor C13 and the seventh capacitor C13, the seventh capacitor C13 and the fourth terminal of the fourth capacitor C13, respectively, a second terminal of the first integrated circuit U1 is connected to a cathode of a first diode D1, an anode of the first diode D1 is externally connected to a 5V dc voltage power supply, a third terminal of the first integrated circuit U1 is connected to digital ground through a tenth capacitor C10, a fourth terminal of the first integrated circuit U1 is connected to digital ground, a tenth terminal of the first integrated circuit U1 is connected to digital ground through a thirteenth capacitor C13, a tenth capacitor C10 of the first integrated circuit U1 is connected to thirteenth terminal of the first integrated circuit U1 through an eighth resistor R8, a twelfth terminal of the first integrated circuit U1 is connected to digital ground, a thirteenth terminal of the first integrated circuit U1 is connected to digital ground through a fifteenth capacitor C15 and a sixteenth capacitor C16, respectively, a fourteenth terminal of the first integrated circuit U1 is connected to digital ground through a seventeenth capacitor C17, a fifteenth terminal of the first integrated circuit U1 is connected to sixteenth terminal of the first integrated circuit U1 through a crystal JZ1, a sixteenth capacitor U1, the parallel circuit of the eighteenth capacitor C18 and the twelfth resistor R12 connects the analog ground and the digital ground in the HDMI audio processing circuit 3.
Specifically, the input interface unit 1 of the HDMI functional device includes an HDMI interface.
Specifically, the peripheral connection circuit 2 of the HDMI interface socket sub-stage includes a second integrated circuit U2, a first inductor L1, a second inductor L2, an eleventh capacitor C11, a twelfth capacitor C12, a fourteenth capacitor C14, a nineteenth capacitor C19, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a second diode D2, and a first triode Q1, wherein the type of the second integrated circuit U2 is 3538716, the second end, the fifth end, the eighth end, the tenth end, the seventeenth end, the twentieth end, the twenty end and the twenty end of the second integrated circuit U2 are all connected to a digital ground, and the thirteenth end of the second integrated circuit U2 is connected to the thirty-th end of the thirty-th integrated circuit U6472 through the first inductor L6858, and the fourteenth end of the fourteenth integrated circuit U5474, A serial circuit composed of a twelfth capacitor C12 and an eleventh capacitor C11 is connected to a digital ground, a fifteenth terminal of a second integrated circuit U2 is connected to a seventh terminal of the first integrated circuit U1 through a third resistor R3, a sixteenth terminal of a second integrated circuit U2 is connected to a sixth terminal of the first integrated circuit U1, an eighteenth terminal of the second integrated circuit U2 is externally connected to a 5V dc voltage power supply through a fifth resistor R5, a fifteenth terminal of the second integrated circuit U2 is connected to a ground through a serial circuit composed of a ninth resistor R9 and a fourteenth capacitor C14, a sixteenth terminal of the second integrated circuit U2 is connected to an eighteenth terminal of the second integrated circuit U2, a ninth resistor R9 and a fourteenth capacitor C14 through a sixth resistor R6, a nineteenth terminal of the second integrated circuit U2 is connected to an anode of a second diode D2, a cathode of the second diode D2 is connected to a base of the eleventh capacitor C11 through a tenth resistor R10, and an emitter of the eleventh transistor C19 are connected in parallel to a base of the triode C2 through a resistor R6 Connect, the external 3.3V direct current voltage power supply of collecting electrode through seventh resistance R7 of triode, the collecting electrode of triode is connected with thirty two ends of first integrated circuit U1, in this circuit, the resistance capacitance who has adopted is discrete component, the withstand voltage level between the electrical components has just so been increased, it has the guard action to the power supply of HDMI interface to have played, and second integrated circuit U2's model is HI3516A, it has the surge protection function, when the end of using appears the heavy current, can the power supply of automatic cutout HDMI interface, guarantee to use the end of using can not damage, and possess the HDMI interface power supply automatic recovery function.
Specifically, the audio output-external connection operational amplifier circuit 4 comprises a connector P1, a first resistor R1, a second resistor R2, a third capacitor C3 and a fourth capacitor C4, the connector P1 is provided with five interfaces, the fifth interface of the connector P1 is externally connected with a 5V direct-current voltage power supply, the fourth interface of the connector P1 is connected with a digital ground, the third interface of the connector P1 is connected with an analog ground, the second interface of the connector P1 is connected with the fourth sixteenth end of the first integrated circuit U1 through a series circuit formed by the first resistor R1 and the third capacitor C3, and the first interface of the connector P1 is connected with the fourth seventeenth end of the first integrated circuit U1 through a series circuit formed by the second resistor R2 and the fourth capacitor C4.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. An HDMI interface control circuit with self-adaptive mode is characterized in that: the HDMI audio processing circuit comprises an input interface unit of HDMI functional equipment, an HDMI interface seat sublevel peripheral connecting circuit, an HDMI audio processing circuit and an audio output-external connection amplifier circuit which are connected in sequence;
the HDMI audio processing circuit comprises a first integrated circuit, a first capacitor, a second capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a thirteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, an eighth resistor, a twelfth resistor, a first diode and a crystal oscillator, wherein the type of the first integrated circuit is ADAU1701, the forty-fifth end of the first integrated circuit is grounded, the forty-fourth end of the first integrated circuit is respectively connected with an analog ground through the first capacitor and the second capacitor, the first end of the first integrated circuit is respectively connected with the analog ground through the fifth capacitor and the ninth capacitor, the second end of the first integrated circuit is respectively connected with a digital ground through the sixth capacitor, the seventh capacitor and the eighth capacitor, the second end of the first integrated circuit is connected with the cathode of the first diode, the anode of the first diode is externally connected with a 5V direct current voltage power supply, the third end of the first integrated circuit is connected with a digital ground through a tenth capacitor, the fourth end of the first integrated circuit is connected with the digital ground, the tenth end of the first integrated circuit is connected with the digital ground through a thirteenth capacitor, the tenth capacitor of the first integrated circuit is connected with the thirteenth end of the first integrated circuit through an eighth resistor, the twelfth end of the first integrated circuit is connected with the digital ground, the thirteenth end of the first integrated circuit is respectively connected with the digital ground through a fifteenth capacitor and a sixteenth capacitor, the fourteenth end of the first integrated circuit is connected with the digital ground through a seventeenth capacitor, the fifteenth end of the first integrated circuit is connected with the sixteenth end of the first integrated circuit through a crystal oscillator, the twentieth end of the first integrated circuit is connected with the digital ground, and a parallel circuit consisting of the eighteenth capacitor and the twelfth resistor is connected with an analog ground and the digital ground in the HDMI audio processing circuit.
2. The HDMI interface control circuit having an adaptive mode according to claim 1, wherein: the input interface unit of the HDMI functional device includes an HDMI interface.
3. The HDMI interface control circuit having an adaptive mode according to claim 1, wherein: the peripheral connecting circuit of the HDMI interface seat sublevel comprises a second integrated circuit, a first inductor, a second inductor, an eleventh capacitor, a twelfth capacitor, a fourteenth capacitor, a nineteenth capacitor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a second diode and a first triode, wherein the model of the second integrated circuit is HI3516A, the second end, the fifth end, the eighth end, the tenth end, the seventeenth end, the twentieth end and the twenty-third end of the second integrated circuit are all connected with a digital ground, the thirteenth end of the second integrated circuit is connected with the thirty-third end of the first integrated circuit through the first inductor, the fourteenth end of the second integrated circuit is connected with a digital ground through a series circuit consisting of the second inductor, the twelfth capacitor and the eleventh capacitor, and the fifteenth end of the second integrated circuit is connected with the seventh end of the first integrated circuit through the third resistor, sixteenth end of the second integrated circuit is connected with the sixth end of the first integrated circuit, eighteenth end of the second integrated circuit is externally connected with a 5V direct current voltage power supply through a fifth resistor, fifteenth end of the second integrated circuit is grounded through a series circuit formed by a ninth resistor and a fourteenth capacitor, sixteenth end of the second integrated circuit is respectively connected with the eighteenth end of the second integrated circuit through a sixth resistor, the ninth resistor is connected with the fourteenth capacitor, a nineteenth end of the second integrated circuit is connected with an anode of the second diode, a cathode of the second diode is connected with a base electrode of the triode through the tenth resistor, the base electrode of the triode is connected with an emitting electrode of the triode through a parallel circuit formed by the eleventh resistor and the nineteenth capacitor, a collector electrode of the triode is externally connected with a 3.3V direct-current voltage power supply through the seventh resistor, and the collector electrode of the triode is connected with thirty-two ends of the first integrated circuit.
4. The HDMI interface control circuit having an adaptive mode according to claim 1, wherein: the audio output-external amplifier circuit comprises a connector, a first resistor, a second resistor, a third capacitor and a fourth capacitor, wherein the connector is provided with five interfaces, the fifth interface of the connector is externally connected with a 5V direct-current voltage power supply, the fourth interface of the connector is connected with a digital ground, the third interface of the connector is connected with an analog ground, the second interface of the connector is connected with the sixteenth end of the first integrated circuit through a series circuit formed by the first resistor and the third capacitor, and the first interface of the connector is connected with the seventeenth end of the first integrated circuit through a series circuit formed by the second resistor and the fourth capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123288174.7U CN216490787U (en) | 2021-12-25 | 2021-12-25 | HDMI interface control circuit with self-adaptive mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123288174.7U CN216490787U (en) | 2021-12-25 | 2021-12-25 | HDMI interface control circuit with self-adaptive mode |
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| Publication Number | Publication Date |
|---|---|
| CN216490787U true CN216490787U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123288174.7U Active CN216490787U (en) | 2021-12-25 | 2021-12-25 | HDMI interface control circuit with self-adaptive mode |
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| CN (1) | CN216490787U (en) |
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2021
- 2021-12-25 CN CN202123288174.7U patent/CN216490787U/en active Active
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