High-performance and low-power hifi decoding system
A low-power, high-performance technology, applied in the field of HIFI audio playback and decoding systems, can solve problems such as complex calculations, large calculations, and high power consumption, and achieve the effects of reducing connection resources, large transmission bandwidth, and improving data flow speed
Active Publication Date: 2018-09-14
FUZHOU ROCKCHIP SEMICON
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Problems solved by technology
HiFi music playback is a kind of advanced audio playback requirement. In the current equipment, the power consumption is usually high due to the complex operation and large amount of calculation. The traditional portable MP3 player cannot complete such a huge calculation, or can complete the calculation. The CPU will have a lot of power consumption and cannot be used for portable devices, so its corresponding device form is usually a desktop audio playback device, that is, a device that is directly plugged in. As people's requirements for audio quality become higher and higher , the demand for portable HiFi is becoming more and more urgent, so the present invention proposes a high-performance and low-power consumption HiFi decoder structure using a dedicated acceleration circuit, which can be applied to portable audio playback equipment
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[0021] Such as figure 1 As shown, the high-performance and low-power consumption HIFI decoding system of the present invention includes dividing the overall circuit of the chip into two parts, the basic subsystem 1 and the HIFI subsystem 2, wherein the basic subsystem 1 is responsible for basic operating system control, and the HIFI subsystem 2 is responsible for HIFI audio decoding and playing, and the power of the HIFI subsystem 2 is turned off when the HIFI function is not used.
[0022] The basic subsystem 1 includes a system operation CPU 11, a first program storage unit 12, a first data storage unit 13, a first transmission bus 14, a peripheral communication unit 15, a HIFI subsystem power domain control unit 16, and a clock control unit 17 And asynchronous communication box 18, described system operation CPU11, first program storage unit 12, first data storage unit 13 and peripheral hardware communication unit all connect first transmission bus 14; Described peripheral ...
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The invention provides a high-performance and low-power HIFI (high fidelity) decoding system which comprises overall chip circuits. The overall chip circuits are divided into a basic subsystem and a HIFI subsystem, the basic subsystem is responsible for basic operating system control, the HIFI subsystem is responsible for HIFI audio decoding and playing, and power sources of the HIFI subsystem are shut down when HIFI functions are not used. The high-performance and low-power HIFI decoding system has the advantages that the circuit of the HIFI subsystem of a high-performance portion and a circuit of the low-power basic subsystem are differentiated from each other by a double-circuit system, an operation CPU (central processing unit) is arranged in the circuit of the HIFI subsystem, the HIFI subsystem has powerful operation functions, a system operating CPU in the circuit of the basic subsystem is low in operation ability but is ultra-low in power consumption, accordingly, chips of the high-performance and low-power HIFI decoding system with the structure are in such low-power system states that the circuit of the HIFI subsystem is open while only the low-power basic subsystem runs for most of the time, and the high-performance and low-power HIFI decoding system can be applied to portable audio playing equipment.
Description
technical field [0001] The invention relates to an audio playback decoding system, in particular to a HIFI audio playback decoding system. Background technique [0002] Hi-Fi is the abbreviation of High-Fidelity in English, literally translated as "high fidelity", and its definition is: a replay sound that is highly similar to the original sound. HiFi music playback is a kind of advanced audio playback requirement. In the current equipment, the power consumption is usually high due to the complex operation and large amount of calculation. The traditional portable MP3 player cannot complete such a huge calculation, or can complete the calculation. The CPU will have a lot of power consumption and cannot be used for portable devices, so its corresponding device form is usually a desktop audio playback device, that is, a device that is directly plugged in. As people's requirements for audio quality become higher and higher , the demand for portable HiFi is becoming more and mor...
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IPC IPC(8): H04R3/00
Inventor 廖裕民江显舟顾家其
Owner FUZHOU ROCKCHIP SEMICON