ADSP-21364 EZ-KIT Lite Hardware Reference

The CLKIN pin of the processor connects to a 24.576 MHz oscillator. The core frequency of the processor is derived by multiplying the frequency at the CLKIN pin by a value determined by the state of the processor pins, CLKCFG1 and CLKCFG0. The value at these pins is determined by the state of the SW10 switch (see “Boot Mode and Clock Ratio Select Switch (SW10)” on page 2-12). By default, the EZ-KIT Lite provides a core frequency of 147.456 MHz. It is possible to increase the speed of the processor by changing the value of the PMCTL register.

The SW10 switch also configures the boot mode of the processor. The EZ-KIT Lite is capable of parallel port boot and SPI master boot. By default, the EZ-KIT Lite boots from the parallel port. For information about configuring the boot modes, see “Boot Mode and Clock Ratio Select Switch (SW10)” on page 2-12.

Parallel Port

The parallel port (PP) of the ADSP-21364 processor consists of a 16-bitmultiplex address/data memory bus (AD15–0) and an address latch-enable pin (ALE). The interface does not have any memory select pins; these sig- nals must be generated by decoding the address.

The PP connections to the EZ-KIT Lite are shown in Figure 2-2. The PP connects to an 8-bit parallel flash memory, an 8-bit SRAM memory, and eight general-purpose LEDs. The upper three address bits connect to a

3-to-8 decoder, providing eight memory select pins. See “External Mem- ory” on page 1-7for more information about accessing the flash and SDRAM memories.

Because the PP is a multiplexed address/data memory bus, two 8-bit latches are used to latch the upper address bits. Additional latch is used to drive the LEDs. The latter allows the LED values to be written to as if they were at a memory location. For more information about using the LEDs, refer to the “LEDs and Push Buttons” on page 1-10.

ADSP-21364 EZ-KIT Lite Evaluation System Manual

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Analog Devices system manual Parallel Port, ADSP-21364 EZ-KIT Lite Hardware Reference
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ADSP-21364 specifications

The Analog Devices ADSP-21364 is a high-performance digital signal processor (DSP) specifically designed for demanding applications in audio, industrial, and communications sectors. It is well-regarded for its powerful processing capabilities, extensive connectivity options, and energy efficiency, making it an ideal choice for complex digital signal processing tasks.

One of the standout features of the ADSP-21364 is its dual Harvard architecture, which allows for simultaneous access to program and data memory. This capability significantly improves performance by reducing bottlenecks, enabling faster execution of algorithms. The processor boasts a clock speed of up to 300 MHz, ensuring it can handle a wide range of real-time signal processing tasks.

The ADSP-21364 is equipped with a rich set of on-chip memory resources, including 64KB of program RAM and 64KB of data RAM. This substantial memory allocation enables the storage of intricate algorithms and large datasets, ensuring that high-performance applications can be executed without the need for external memory, thus reducing latency and power consumption.

Another notable feature of this DSP is its advanced multiprocessing capabilities. The processor includes six processing engines, allowing for parallel processing of multiple tasks. This architecture is particularly beneficial for applications that require simultaneous processing of audio signals, such as digital mixing or effects processing, enhancing the overall throughput.

In terms of connectivity, the ADSP-21364 is equipped with a wide range of I/O options, including serial ports, parallel ports, and a high-speed synchronous port. This versatility facilitates seamless integration with other system components, making the processor an excellent choice for embedded systems that rely on external data sources.

The ADSP-21364 also supports various industry-standard digital audio interfaces, such as I2S and TDM, enabling straightforward interfacing with audio codecs and other digital audio devices. Moreover, it features built-in hardware accelerators for efficient filtering, Fast Fourier Transform (FFT), and interpolation tasks, thereby enhancing its ability to handle complex audio signal processing.

On the power consumption front, the ADSP-21364 is designed with energy efficiency in mind. Its architecture allows for low-power operation modes, which are crucial in battery-powered applications where energy conservation is a priority.

In conclusion, the Analog Devices ADSP-21364 DSP is a robust solution for high-performance digital signal processing needs. With its dual Harvard architecture, extensive memory resources, advanced multiprocessing capabilities, versatile connectivity options, and energy-efficient design, it stands out as a premier choice for a variety of applications in the fields of audio processing, telecommunications, and industrial automation.
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