Triple Timer Module Programming Model

9.3.4.3 Reserved Modes

Modes 8, 11, 12, 13, 14, and 15 are reserved.

9.3.5Special Cases

The following special cases apply during wait and stop state.

νTimer behavior during wait — Timer clocks are active during the execution of the WAIT instruction and timer activity is undisturbed. If a timer interrupt is generated, the DSP56301 leaves the wait state and services the interrupt.

νTimer behavior during stop — During execution of the STOP instruction, the timer clocks are disabled, timer activity stops, and the TIO signals are disconnected. Any external changes that happen to the TIO signals are ignored when the DSP56301 is in stop state. To ensure correct operation, disable the timers before the DSP56301 is placed in stop state.

9.3.6DMA Trigger

Each timer can also trigger DMA transfers if a DMA channel is programmed to be triggered by a timer event. The timer issues a DMA trigger on every event in all modes of operation. To ensure that all DMA triggers are serviced, provide for the preceding DMA trigger to be serviced before the DMA channel receives the next trigger.

9.4Triple Timer Module Programming Model

The timer programmer’s model in Figure 9-20shows the structure of the timer registers.

9.4.1Prescaler Counter

The prescaler counter is a 21-bit counter that decrements on the rising edge of the prescaler input clock. The counter is enabled when at least one of the three timers is enabled (that is, one or more of the timer enable bits are set) and is using the prescaler output as its source (that is, one or more of the PCE bits are set).

Triple Timer Module

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Motorola DSP56301 Triple Timer Module Programming Model, Special Cases, DMA Trigger, Prescaler Counter, Reserved Modes
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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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