AMIS-49200-XTP Fieldbus MAU
The AMU2481 Audio Mixer is a digital real-time signal processor utilizing NMOS technology, available in a 24-pin DIL plastic package or a 44-pin PLCC package. It is designed for the digital processing of both TV audio information and digital audio data supplied by the DMA 2271 D2MAC Decoder. The architecture of the AMU2481 integrates two main blocks: I/O blocks and a DSP block. The I/O blocks manage the input and output of audio information, while the DSP block features a mask-programmable digital signal processor. This processor can be controlled by a microprocessor (CCU) via the IM bus, allowing for parameter modifications during operation. The DSP software enables the execution of various audio functions, including deemphasis, oversampling, mixing, and volume control. An overview of the AMU2481's functions is illustrated in Figure 11, provided by Micronas.
The AMU2481 Audio Mixer is a sophisticated device that integrates advanced digital signal processing capabilities tailored for audio applications. The NMOS technology employed in its design allows for efficient power consumption and high-speed operation, making it suitable for real-time audio processing tasks.
The device is encapsulated in either a 24-pin DIL or a 44-pin PLCC package, providing flexibility for integration into different electronic systems. The distinction between the two packages primarily affects the mounting method and space considerations in PCB design.
The architecture of the AMU2481 is characterized by its dual-block structure. The I/O blocks play a crucial role in interfacing with external audio sources and outputs, ensuring that audio signals are accurately captured and transmitted. These blocks are designed to handle a variety of audio formats, accommodating diverse applications in television and other audio systems.
The DSP block is the core of the audio processing capabilities of the AMU2481. It features a mask-programmable digital signal processor, which allows for customization of the processing algorithms according to specific requirements. The ability to control the DSP via a microprocessor (CCU) through the IM bus enhances the flexibility of the system, enabling real-time adjustments to processing parameters such as coefficients. This feature is particularly beneficial in dynamic audio environments where conditions may change rapidly.
The software running on the DSP is responsible for executing a range of audio functions. Deemphasis is used to restore frequency response in audio signals that have been pre-emphasized during transmission. Oversampling techniques improve the audio quality by reducing aliasing effects, while mixing capabilities allow for the combination of multiple audio signals. Volume control functions enable users to adjust the output levels, ensuring optimal listening experiences.
Overall, the AMU2481 Audio Mixer represents a powerful solution for digital audio processing, combining flexibility, efficiency, and advanced functionality to meet the demands of modern audio applications. Its architecture and features make it a valuable component in systems that require high-quality audio processing and management.The AMU2481 Audio Mixer is a digital realtime signal processor in NMOS technology, housed in a 24pin Dil plastic package or in a 44pin PLCC package. It is de- signed to perform digital processing of both TV Audio in- formation and digital Audio data supplied by the DMA 2271 D2MAC Decoder.
The architecture of the AMU2481 combines two main blocks: I /O blocks DSP block The I/O blocks are used to manage the input and output of Audio information. The DSP block consists of a mask programmable digital signal processor, whose software CAN be controlled by a Microprocessor (CCU) via the IM bus. So parameters like coefficients CAN be modified during performance. By means of the DSP software, au- dio functions, such as deemphasis, oversampling mix- ing and Volume Control are performed.
Fig. 11 gives an overview over the AMUs functions. By Micronas 🔗 External reference
The AMU2481 Audio Mixer is a sophisticated device that integrates advanced digital signal processing capabilities tailored for audio applications. The NMOS technology employed in its design allows for efficient power consumption and high-speed operation, making it suitable for real-time audio processing tasks.
The device is encapsulated in either a 24-pin DIL or a 44-pin PLCC package, providing flexibility for integration into different electronic systems. The distinction between the two packages primarily affects the mounting method and space considerations in PCB design.
The architecture of the AMU2481 is characterized by its dual-block structure. The I/O blocks play a crucial role in interfacing with external audio sources and outputs, ensuring that audio signals are accurately captured and transmitted. These blocks are designed to handle a variety of audio formats, accommodating diverse applications in television and other audio systems.
The DSP block is the core of the audio processing capabilities of the AMU2481. It features a mask-programmable digital signal processor, which allows for customization of the processing algorithms according to specific requirements. The ability to control the DSP via a microprocessor (CCU) through the IM bus enhances the flexibility of the system, enabling real-time adjustments to processing parameters such as coefficients. This feature is particularly beneficial in dynamic audio environments where conditions may change rapidly.
The software running on the DSP is responsible for executing a range of audio functions. Deemphasis is used to restore frequency response in audio signals that have been pre-emphasized during transmission. Oversampling techniques improve the audio quality by reducing aliasing effects, while mixing capabilities allow for the combination of multiple audio signals. Volume control functions enable users to adjust the output levels, ensuring optimal listening experiences.
Overall, the AMU2481 Audio Mixer represents a powerful solution for digital audio processing, combining flexibility, efficiency, and advanced functionality to meet the demands of modern audio applications. Its architecture and features make it a valuable component in systems that require high-quality audio processing and management.The AMU2481 Audio Mixer is a digital realtime signal processor in NMOS technology, housed in a 24pin Dil plastic package or in a 44pin PLCC package. It is de- signed to perform digital processing of both TV Audio in- formation and digital Audio data supplied by the DMA 2271 D2MAC Decoder.
The architecture of the AMU2481 combines two main blocks: I /O blocks DSP block The I/O blocks are used to manage the input and output of Audio information. The DSP block consists of a mask programmable digital signal processor, whose software CAN be controlled by a Microprocessor (CCU) via the IM bus. So parameters like coefficients CAN be modified during performance. By means of the DSP software, au- dio functions, such as deemphasis, oversampling mix- ing and Volume Control are performed.
Fig. 11 gives an overview over the AMUs functions. By Micronas 🔗 External reference