Special Filter Instructions

Any combination of registers different from the above will yield incorrect results with the FIR/COR instruction.

tag

0x0106

0x010

x[k±3]

x[k±2]

Use R5 to

wrap around

x[k]

x[k±1]

R0

0x0100

0x0102

After FIR/COR execution

The STAT register is saved in the filterSTAT_tag location. The output of the fil- tering operation in the example is located in AC0 (lower word) and AC1 (high word). This 32 bit result is stored in the SampleOut RAM location. R0 should be pointing to the oldest sample. The oldest sample, x[k±3], is overwritten by the next sample to be filtered, x[k+1]. R0 is saved in the startOfBuff pointer for the next FIR/COR instruction

Notice that R0 points backwards by one location from its starting point each time an FIR/COR instruction is executed. In the above figure, R0 would end up at successive locations in a clockwise manner.

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Texas Instruments MSP50C614 manual After FIR/COR execution
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MSP50C614 specifications

The Texas Instruments MSP50C614 is a microcontroller that belongs to the MSP430 family, renowned for its low power consumption and versatile functionality. Primarily designed for embedded applications, this microcontroller is favored in various industries, including consumer electronics, industrial automation, and healthcare devices.

One of the standout features of the MSP50C614 is its ultra-low power technology, which enables it to operate in various power modes. This makes it ideal for battery-powered applications, where energy efficiency is crucial. The MSP430 architecture allows for a flexible power management system, ensuring that energy is conserved while providing robust performance.

The MSP50C614 is equipped with a 16-bit RISC CPU that delivers high performance while maintaining low power usage. With a maximum clock frequency of 16 MHz, it can execute most instructions in a single cycle, resulting in swift operation and responsive performance. This microcontroller also comes with a generous flash memory capacity, allowing developers to store large amounts of code and data conveniently.

In terms of peripherals, the MSP50C614 is highly versatile. It features a range of digital and analog input/output options, including multiple timers, GPIO ports, and various communication interfaces like UART, SPI, and I2C. This extensive set of peripherals allows for seamless integration with other components and simplifies the design of complex systems.

The integrated 12-bit Analog-to-Digital Converter (ADC) stands out as a valuable characteristic of the MSP50C614. This feature enables the microcontroller to convert physical analog signals into digital data, making it particularly useful for sensing applications and real-time monitoring.

Another noteworthy technology employed in the MSP50C614 is its support for low-voltage operations. With a broad supply voltage range, this microcontroller can function efficiently in diverse environments and is suitable for low-power applications, enhancing its practicality.

Moreover, Texas Instruments provides software support in the form of Code Composer Studio and various libraries that make it easier for developers to program and utilize the MSP50C614 effectively.

In summary, the Texas Instruments MSP50C614 microcontroller is a powerful, low-power solution equipped with the features and technologies necessary for efficient operation in a wide array of applications. Its blend of performance, flexibility, and energy efficiency makes it a popular choice among engineers and designers looking to create innovative, sustainable designs in the rapidly evolving tech landscape.
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