DSP56300 Core Functional Blocks

1.4.4PLL and Clock Oscillator

The clock generator in the DSP56300 core comprises two main blocks: the PLL, which performs clock input division, frequency multiplication, and skew elimination; and the clock generator, which performs low-power division and clock pulse generation. These features allow you to:

ν

ν

Change the low-power divide factor without losing the lock

Output a clock with skew elimination

The PLL allows the processor to operate at a high internal clock frequency using a low-frequency clock input, a feature that offers two immediate benefits:

νA lower-frequency clock input reduces the overall electromagnetic interference generated by a system.

νThe ability to oscillate at different frequencies reduces costs by eliminating the need to add additional oscillators to a system.

1.4.5JTAG TAP and OnCE Module

In the DSP56300 core is a dedicated user-accessible TAP that is fully compatible with the IEEE 1149.1 Standard Test Access Port and Boundary Scan Architecture. Problems with testing high-density circuit boards led to the development of this standard under the sponsorship of the Test Technology Committee of IEEE and the JTAG. The DSP56300 core implementation supports circuit-board test strategies based on this standard. The test logic includes a TAP with four dedicated signals, a 16-state controller, and three test data registers. A boundary scan register links all device signals into a single shift register. The test logic, implemented utilizing static logic design, is independent of the device system logic. For details on the JTAG port, consult the DSP56300 Family Manual.

The OnCE module interacts with the DSP56300 core and its peripherals nonintrusively so that you can examine registers, memory, or on-chip peripherals. This facilitates hardware and software development on the DSP56300 core processor. OnCE module functions are provided through the JTAG TAP signals. For details on the OnCE module, consult the DSP56300 Family Manual.

Overview

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Motorola DSP56301 user manual PLL and Clock Oscillator, Jtag TAP and OnCE Module
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DSP56301 specifications

The Motorola DSP56301 is a highly efficient digital signal processor, specifically engineered for real-time audio and speech processing applications. This DSP is part of Motorola's renowned DSP56300 family, which is recognized for its innovative features and outstanding performance in the realm of digital signal processing.

One of the main features of the DSP56301 is its ability to handle complex computations at high speeds. With a maximum clock frequency of 66 MHz, it delivers fast performance, enabling it to process audio signals in real time. The chip is built on a 24-bit architecture, which allows for high-resolution audio processing. This is particularly beneficial in applications such as telecommunications, consumer audio devices, and professional audio equipment, where precision is paramount.

The DSP56301 boasts a comprehensive instruction set that includes efficient mathematical operations, which are essential for digital filters and audio effects processing. One of the key innovations of this device is its dual data path architecture, which permits simultaneous processing of multiple data streams. This feature significantly enhances the device's throughput and responsiveness, making it suitable for demanding applications such as voice recognition and synthesis.

In terms of memory regions, the DSP56301 includes several on-chip memory categories, such as program memory, data memory, and a specialized memory for coefficients. The architecture's support for external memory expansion further increases its versatility, allowing designers to tailor systems to their specific requirements.

The DSP56301 implements advanced features such as a powerful on-chip hardware multiplier and accumulator, simplifying complex mathematical tasks and accelerating the execution of algorithms. Its flexible interrupt system enhances its capability to respond to time-sensitive operations, while the integrated serial ports facilitate efficient data communication with external devices.

Power consumption is also a vital characteristic of the DSP56301. It is designed with energy efficiency in mind, allowing for extended operation in battery-powered devices. The chip’s low power requirements are particularly advantageous in portable audio devices and other applications where energy conservation is crucial.

In conclusion, the Motorola DSP56301 is an exceptional digital signal processor that combines high processing power, flexibility, and efficiency. Its main features, advanced technologies, and robust architecture make it a top choice for developers seeking to create sophisticated audio and signal processing systems. With its enduring legacy in the industry, the DSP56301 continues to be relevant in a variety of modern applications, ensuring it remains a valuable tool for engineers and designers.
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