ADSP-21371KSWZ-2B

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ADSP-21371KSWZ-2B is an embedded Digital Signal Processor (DSP) from Analog Devices Inc. It is part of the Blackfin Embedded DSP family and is designed for consumer applications. The ADSP-21371KSWZ-2B has two levels of memory hierarchies, an on-chip 128KBytes instruction cache, a 4KBytes data cache and an optional 4MBytes of external memory for data. The unit also includes a ARM9 core for control and support of DSP applications.

The ADSP-21371KSWZ-2B is suitable for a wide range of applications including voice and image processing, real-time control, automated test and measurement, radar, GPS, audio/video systems, and digital cellular baseband processing. It also has the ability to handle a number of software packages and operating systems including Linux, uCLinux, Windriver VxWorks, MontaVista Linux and pSOS. It is also compatible with most analog and digital interfaces including SPI, USB, I2C and JTAG.

The ADSP-21371KSWZ-2B operates at frequencies up to 600MHz and includes a Memory Protection Unit (MPU) to prevent accidental modification of code or data. The MPU has three address regions and provides memory protection against address space violation, illegal access of flash and other peripherals, and system partitions for OS and user data.

The ADSP-21371KSWZ-2B has 32 register file accumulators each supporting 16-bit signed integer and 32-bit signed or unsigned fixed-point operations, as well as a 40-bit expandable datapath. The processor also supports looping, pipelining, and superscalar execution of instructions with eight parallel execution engines. It also can accommodate up to eight data/instruction buses to access memory.

The ADSP-21371KSWZ-2B also has an Integrated Communications Processor (ICP) to handle communication protocols including 3G, GSM, GPRS, UMTS, Bluetooth and Wi-Fi. The ICP can perform layer 2 bridging and has a QoS engine that enables the processor to act as an advanced traffic shaper. It also can function as an Internet Protocol (IP) router, a network firewall and a virtual private network (VPN) gateway.

The ADSP-21371KSWZ-2B also includes an on-chip Ethernet interface for communications with host systems. This Ethernet port includes a DMA and support for power management protocols as well as multicast address filtering and Support for 802.3ae and 802.3u standards. It also provides an Ethernet MAC interface to off-chip components with an integrated 10/100Base-T physical layer.

To support real-time operating systems (RTOS) the ADSP-21371KSWZ-2B includes an interrupt controller, an event manager, a real-time clock, and a timer/counter. The interrupt controller supports sixteen external interrupt inputs, seven internal interrupt sources and one watchdog timer. The event manager allows for the creation and manipulation of 32 user events. The timer/counter has four free-running 16-bit timers for general purpose timer/counter functions such as heartbeat/watchdog, I2S/S/PDIF synchronization and data acquisition.

The ADSP-21371KSWZ-2B also contains a direct memory access (DMA) controller to offload data movement-intensive operations from the CPU core. The DMA controller supports both memory and peripheral to memory transfers, and can initiate multiple requests simultaneously. It also supports scatter-gather transfers and can schedule and queue multiple operations at once. The DMA can also use on-chip SRAM to store data, minimizing external memory usage.

The ADSP-21371KSWZ-2B also includes a number of analog interfaces such as an A/D converter, a DAC, an Oscillator/PLL and an external audio input mux. The A/D converter has 12-bit resolution, over-voltage protection, and a built-in reference voltage. The DAC has 16-bit resolution and an adjustable internal reference voltage. The Oscillator/PLL provides a stable source of clock signals for user-specified frequencies and can operate in either internal or external modes. The external audio input mux provides interface signals to multiple sensing devices such as microphones.

The ADSP-21371KSWZ-2B is an ideal solution for a variety of embedded DSP applications. Its performance, control and power management capabilities, peripheral interfaces, and memory make it a great choice for consumer and industrial embedded systems. It has a wide range of features that make it suitable for voice, image and data processing tasks and can be used in a variety of applications. It is also highly compatible with most analog and digital interfaces and software packages, making it a great choice for embedded applications.

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