Operating Modes

9.3.1Triple Timer Modes

For all triple timer modes, the following points are true:

νThe TCSR[TE] bit is set to clear the counter and enable the timer. Clearing TCSR[TE] disables the timer.

νThe value to which the timer is to count is loaded into the TCPR. (This is true for all modes except the measurement modes (modes 4 through 6).

νThe counter is loaded with the TLR value on the first clock.

νIf the counter overflows, TCSR[TOF] is set, and if TCSR[TOIE] is set, an overflow interrupt is generated.

νYou can read the counter contents at any time from the Timer Count Register (TCR).

9.3.1.1 Timer GPIO (Mode 0)

 

Bit Settings

 

 

 

Mode Characteristics

 

 

 

 

 

 

 

 

 

 

 

 

TC3

TC2

TC1

TC0

Mode

Name

 

Function

TIO

Clock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

0

0

0

GPIO

 

Timer

GPIO

Internal

In Mode 0, the timer generates an internal interrupt when a counter value is reached, if the timer compare interrupt is enabled (see Figure 9-3and Figure 9-4). When the counter equals the TCPR value, TCSR[TCF] is set and a compare interrupt is generated if the TCSR[TCIE] bit is set. If the TCSR[TRM] bit is set, the counter is reloaded with the TLR value at the next timer clock and the count is resumed. If TCSR[TRM] is cleared, the counter continues to increment on each timer clock signal. This process repeats until the timer is disabled.

9-6

DSP56301 User’s Manual

Page 267 Page 269
Page 268
Image 268
Motorola DSP56301 user manual Triple Timer Modes, Timer Gpio Mode, TC3 TC2 TC1 TC0, Tio
Page 267 Page 269

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.
Top Page Image Contents